Member: Shin Toyoda (Dr.)

E-mail: toyoda [at] ous.ac.jp

ESR年代測定・線量計測の原理

＜ＥＳＲの原理＞
　電子スピン共鳴（ESR, electron spin resonance または EPR, electron paramagnetic resonance）は物質中の不対電子を検出する物理的な計測法です。
　電子はそのスピン量子数のために磁気モーメントを持っており、小さい磁石とみなすことができます。不対電子は磁場中に置かれると、その磁気モーメントの向きが磁場に平行あるいは反平行（逆向き）に量子化されます。その磁気モーメントが磁場の向きを向いている電子が安定でエネルギーレベルが低く、反対を向いている電子は不安定でエネルギーレベルが高い状態となります（ゼーマン分裂）。エネルギーレベルの低い状態の電子は光子を吸収してエネルギーレベルの高い状態に遷移するため、この光子であるマイクロ波の吸収を観測することによって電子スピン共鳴を検出することができます。実際の計測においては、マイクロ波回路を用いるため、マイクロ波の周波数が固定されているので、磁場の強度を掃引してマイクロ波の吸収を検出します。まとめると、電子スピン共鳴とは、不対電子が磁場中でマイクロ波を吸収する現象、ということになります。
＜線量計測の原理＞
　物質中の原子同士の化学結合は２つの電子（対電子）でできています。放射線は電離作用を持つため、放射線が当たると電子を電離して不対電子ができます。すなわち、化学結合が切れるという現象が起きます。不対電子をもつ化学結合が切れた状態は不安定なため、動き回る他の電子をとらえてもとの化学結合（対電子）に通常すぐに戻りますが、安定なラジカル（不対電子をもつ化学種）が生成した場合には、不対電子を持ったまま長時間存在することがあります。こうした安定なラジカルは放射線の吸収線量（吸収したエネルギー量）に比例して増加するため、不対電子をＥＳＲによって定量することによって、照射された物質の吸収線量を求めることができます。つまり、ＥＳＲ測定によって放射線の吸収線量（被曝線量）を求めることができます。
　例えば、ヒドロキシアパタイトでできている歯のエナメル質は、線量計素子として使用できることがわかっており、歯のエナメルをＥＳＲで計測して生成するラジカルを定量することで、人や動物の被曝線量を個体ごとに求めることができます。
＜年代測定の原理＞
　この線量計測の原理を、地質学的試料や考古学的試料に適用することで年代測定を行うことができます。試料は環境中の自然放射線を受け続けるため、古い試料ほど被曝線量が大きく、ＥＳＲの信号強度が大きくなるためです。自然放射線の線源は土壌中のウラン、トリウム、カリウム、そして宇宙線です。ＥＳＲによって求められるのは自然放射線による総被曝線量（吸収線量）です。試料の周りのウラン、トリウム、カリウムの量を定量し、含水率の補正などをすることによって年間線量率（1年あたりの試料の吸収線量）を推定し、ＥＳＲによって求められた総被曝線量を年間線量率で割ることによって年代を算出します。自然放射線による年間線量率は通常 mGy/y のオーダーですが、吸収線量は数万年で数十 Gy、数十万年で数百 Gy のオーダーになります。放射線によって鉱物中に生成するラジカルがこの年代範囲で安定に存在できる必要があります。

Research topics

ESR dating of volcanic quartz
ESR dating of sedimentary quartz
ESR dating of sea-floor hydrothermal barite
Fingerprinting of sediment with ESR signals, applications to aeolian dust
Fingerprinting of sediment with ESR signals, applications to Mongolian Gobi desert
ESR tooth enamel dosimetry

Publications

S. Watanabe, T. Hasegawa, N. Obata, S. Toyoda, T. Imayama (2023) Eruption history and magma plumbing system of Futamatayama Volcano, southern Fukushima, Japan, The Journal of the Geological Society of Japan, 129 (1), 307-324, https://doi.org/10.5575/geosoc.2022.0061

S. Toyoda, A. B. Flood, T. Miura, F. Trompier, R. Wilkins (2023) Editorial: The EPR BioDose conference proceedings from 2022, Radiation Protection Dosimetry, 199 (14), 1439–1440. https://doi.org/10.1093/rpd/ncad229

S. Toyoda, K. Inoue, I. Yamaguchi, M. Hoshi, S. Hirota, T. Oka, T. Shimazaki, H. Mizuno, A. Tani, H. Yasuda, C. A. B. Gonzales, K. Okutsu, A. Takahashi, N. Tanaka, A. Todaka (2023) Interlaboratory comparison of EPR tooth enamel dosimetry with investigations of the dose responses of the standard samples, Radiation Protection Dosimetry, 199, 1557-1564. https://doi.org/10.1093/rpd/ncad150.

V. Stepanenko, A. Kaprin, S. Ivanov, P. Shegay, V. Bogacheva, H. Sato, K. Shichijo, S. Toyoda, N. Kawano, M. Ohtaki, N. Fujimoto, S. Endo, N. Chaizhunusova, D. Shabdarbaeva, K. Zhumadilov, M. Hoshi (2022) Microdistribution of internal radiation dose in biological tissues exposed to 56Mn dioxide microparticles, Journal of Radiation Research, 63 (Supplement 1), i21-i25, https://doi.org/10.1093/jrr/rrac023

V. Stepanenko, A. Kaprin, S. Ivanov, P. Shegay, H. Sato, S. Toyoda, N. Kawano, N. Fujimoto, S. Endo, V. Bogacheva, T. Kolyzhenkov, A. Khailov, K. Zhumadilov, A. Zhumalina, D. Yerimbetova, M. Hoshi (2022) Estimation of 'dose-depth' profile in the surface layers of a quartz-containing tile from the former Hiroshima University building indicates the possible presence of beta-irradiation from residual radioactivity after A-bombing, Journal of radiation research, 63 (Supplement 1), i54-i60, https://doi.org/10.1093/jrr/rrac029

V. Stepanenko, H. Sato, N. Fujimoto, K. Shichijo, S. Toyoda, N. Kawano, S. Endo, A. Kaprin, S. Ivanov, P. Shegay, A. Petukhov, T. Kolyzhenkov, V. Bogacheva, N. Chaizhunusova, D. Shabdarbaeva, K. Zhumadilov, M. Hoshi (2022) External dose estimates of laboratory rats and mice during exposure to dispersed neutron-activated 56Mn powder, Journal of radiation research, 63 (Supplement 1), i16-i20, https://doi.org/10.1093/jrr/rrac032

Tsang, M.-Y., Toyoda, S., Tomita, M., and Yamamoto, Y. (2022) Thermal Stability and Closure Temperature of Barite for Electron Spin Resonance Dating. Quaternary Geochronology, 71, 101332. https://doi.org/10.1016/j.quageo.2022.101332

U. Sayin, S. Toyoda, I. Isik, G. Ekici, U. Rabia, Y. Semiz, R. Biyik, A. Ozmen (2022) ESR/OSL Dating and Firing Temperature Determination of Archeological Pottery from Kumyer Location in Turkey, Applied Magnetic Resonance, 53, 1361-1374, https://doi.org/10.1007/s00723-022-01481-z

S. Hirota, C. A. B. Gonzales, H. Yasuda, I. Yamaguchi, S. Toyoda (2021) Electron spin resonance signal of human nails: increase after irradiation, Journal of Radioanalytical and Nuclear Chemistry, 328, 1369-1373. https://doi.org/10.1007/s10967-020-07540-8

S. Toyoda and M. Amimoto (2021) Dose response of the E1’ center in quartz, Geochronometria, 48, 191-196 https://doi.org/10.2478/geochr-2020-0037

原之園大一，豊田新 (2021) 萩平遺跡A地点隣接地より出土した礫群のESRによる被熱推定及び年代測定，愛知学院大学考古学発掘調査報告31, 愛知県新城市川路萩平遺跡A地点隣接地の発掘記録７，第8章４節，p.72-75, 愛知学院大学文学部歴史学科.

A. Todaka, S. Toyoda, N. Fujimoto, H. Sato, V. Stepanenko, N. Kawano, N. Chaizhunusova, D. Uzbekov, Y. Kairkhanova, B. Ruslanova, Z. Abishev, G. Amantayeva, D. Shabdarbaeva, K. Zhumadilov, A. Azhimkhanov, M. Hoshi (2021) ESR tooth enamel doses of rats and mice exposed to radioactive 56MnO2 dust, Advances in ESR Applications, 37, 13-18.

冨田麻起子, 豊田新 (2021) 重晶石中の鉛濃度がESR信号のガンマ線照射による生成に与える影響, ESR応用計測, 37, 9-12. M. Tomita, S. Toyoda (2021) Lead concentration affecting the ESR signal in barite, Lead concentration affecting the ESR signal in barite, Advances in ESR Applications, 37, 9-12.

小畑直也, 豊田新 (2021) ESR測定における試料管設置深度と試料量の検討, ESR応用計測, 37, 19-23. N. Obata, S. Toyoda (2021) Investigation of sample tube setting depth and sample volume for ESR measurement, Advances in ESR Applications, 37, 19-23.

原之園大一, 豊田 新, 長井 謙治, 成瀬敏郎 (2021) 辻田遺跡堆積層中の風送塵の検出, ESR応用計測, 37, 4-8. D. Haranosono, S. Toyoda, K. Nagai, T. Naruse (2021) Temporal changes of aeolian dust in the sedimentary sequence at Tsujita Site, Advances in ESR Applications, 37, 4-8.

豊田新 (2021) 石英に見られる常磁性格子欠陥とESR年代測定, Radioisotopes, 70, 95-105.

S. Hirota, C. A. B. Gonzales, H. Yasuda, I. Yamaguchi, S. Toyoda (2021) Electron spin resonance signal of human nails: increase after irradiation, Journal of Radioanalytical and Nuclear Chemistry. https://doi.org/10.1007/s10967-020-07540-8.

網本真奈, 豊田新, 実吉玄貴, 高橋勇人, 寺田 智也, 石垣 忍, Tsogtbaatar Khishigjav, Mainbayar Buuvei, Buyantegsh Batsaikhan (2020) モンゴルゴビ砂漠の恐竜化石を産する白亜系堆積物の石英の酸素空孔量と堆積環境, 岡山理科大学紀要 A, 56, 59-65.

Tomonaga, Yama; Yagasaki, Kazuhiro; Park, Jin-Oh; Ashi, Juichiro; Toyoda, Shin; Takahata, Naoto; Sano, Yuji (2020) Fluid dynamics along the Nankai Trough: He isotopes reveal direct seafloor mantle-fluid emission in the Kumano Basin (southwest Japan), ACS Earth and Space Chemistry, 4, 2015-2112.

豊田新，戸高安曇 (2020) 歯のエナメルを用いたＥＳＲ生体線量計測，放射線化学, 110, 3-12.

S. Toyoda, M. Murahashi, A. Ivannikov (2020) ESR tooth enamel retrospective dosimetry quoted as spin numbers, Radiation Measurements, 135, 106333.

A. Todaka, S. Toyoda, M. Natsuhori, K. Okada, I. Sato, H. Sato, J. Sasaki (2020) ESR assessment of tooth enamel dose from cattle bred in areas contaminated due to the Fukushima Dai-ichi nuclear power plant accident, Radiation Measurements, 136, 106357.

V. Stepanenko, A. Kaprin, S. Ivanov, P. Shegay, K. Zhumadilov, A. Petukhov, T. Kolyzhenkov, V. Bogacheva, E. Zharova, E. Iaskova, N. Chaizhunusova, D. Shabdarbayeva, G. Amantayeva, A. Baurzhan, B. Ruslanova, Z. Abishev, M. Apbassova, Y. Kairkhanova, D. Uzbekov, Z. Khismetova, Y. Zhunussov, N. Fujimoto, H. Sato, K. Shichijo, M. Nakashima, A. Sakaguchi, S. Toyoda, N. Kawano, M. Ohtaki, K. Otani, S. Endo, M. Yamamoto, M. Hoshi (2020) Internal doses in experimental mice and rats following exposure to neutron-activated 56MnO2 powder: results of an international, multicenter study, Radiation and Environmental Biophysics, 59 (4), 683-692, https://doi.org/10.1007/s00411-020-00870-x

Yuko Isozaki, Ryuji Tada, Youbin Sun, Hongbo Zheng, Shin Toyoda, Naomi Sugiura, Akinori Karasuda and Hitoshi Hasegawa (2020) Origin of aeolian dust emitted from the Tarim Basin based on the ESR signal intensity and crystallinity index of quartz: the recycling system of fine detrital material within the basin, Geological Magazine, 157, 707-718. https://doi.org/10.1017/S0016756820000242

ISO (2020) Radiological protection – Minimum criteria for electron paramagnetic resonance (EPR) spectroscopy for retrospective dosimetry of ionizing radiation – Part 2: Ex vivo human tooth enamel dosimetry, International standard, ISO 13304-2.

S. Toyoda, M. Murahashi, M. Natsuhori, S. Ito, A. Ivannikov, A. Todaka (2019) Retrospective ESR reconstruction of cattle tooth enamel doses from the radioactive nuclei released by the accident of Fukushima Dai-ichi atomic power plants, Radiation Protection Dosimetry, 186, 48-53.

T. Imayama, Y. Koh, K. Aoki, M. Saneyoshi, K. Yagi, S. Aoki, T. Terada, Y. Sawada, C. Ikawa, S. Ishigaki, S. Toyoda, K. Tsogtbaatar, B. Mainbayar (2019) Late Permian to Early Triassic back-arc type volcanism in the southern Mongolia volcano-plutonic belt of the Central Asian Orogenic Belt: Implication for timing of the final closure of the Palaeo-Asian Ocean, Journal of Geodynamics, 131, 101650.

蜷川清隆, 豊田新, 中川益生, 藤原泰誠, 山本勲, 熊谷英憲, 木下正高, 久保信, 芦寿一郎 (2018) 長期海底放射線測定のためのNaI(Tl)γ線測定装置の開発と海底での最初の測定, ESR応用計測, 35, 4-11.

S. Ishigaki, K. Tsogtbaatar, H. Nishido, S. Toyoda, B. Mainbayar, T. Chinzorig, Y. Noumi, A. Takahashi, S. Ulziitseren, E. Zorig, B. Buyantegsh, B. Purevsuren, G. Enerel, C. Bayardorj, E. Ochirjantsan, M. Saneyoshi, K. Aoki, S. Hayashi (2018) Report of the Okayama University of Science – Mongolian Institute of Paleontology and Geology Joint Expedition in 2017, Bull. Res. Inst. Nat. Sci., Okayama Univ. of Sci., 43, 25-39.

A. Harshman, S. Toyoda, T. Johnson (2018) Suitability of Japanese wild boar tooth enamel for use as an Electron Spin Resonance dosimeter, Rad. Meas., 116, 46-50, doi: 10.1016/j.radmeas.2018.07.001.

S. Nakai, A. Takamasa, T. Fujiwara, S. Toyoda, J. Ishibashi, R. Yoshizumi, T. Urabe (2018) Influence of Th-rich mineral phases on U–Th radioactive disequilibrium ages of sulfide deposits from the Okinawa Trough, Chemical Geology, 486, 61-72, doi: 10.1016/j.chemgeo.2018.04.004.

京極恒友, 豊田新, 藤原泰誠, 西戸裕嗣 (2018) 重晶石に含まれるストロンチウム濃度が与えるｋ値への影響, K. kyogoku, S. Toyoda, T. Fujiwara, H. Nishido (2018) Strontium concentration dependence of the k value in barite, Advances in ESR Applications, 34, 4-7.

豊田新, 高原周一, 宮川和也, 守田益宗, 青木一勝, 佐藤幸子, 坂根弦太, 青木宏之, 蜂谷和明, 矢城陽一朗, 重松利信, 那須浩郎, 篠原隆, 宮宅康郎, 渡邉誠, 今井剛樹, 今山武志, 兵藤博信, 片山敏和 (2017) 岡山理科大学教育支援機構理科教育センターにおける理科基礎教育の質の向上を目指したカリキュラムの検討, Curriculum improvements in the basic science education programs made by the Science Education Center at Okayama University of Science, 岡山理科大学教育実践研究 第1号, 164-174.(査読有り)

M. Murahashi, S. Toyoda, M. Hoshi, M. Ohtaki, S. Endo, K. Tanaka, Y. Yamada (2017) The sensitivity variation of the radiation induced signal in deciduous teeth to be used in ESR tooth enamel dosimetry, Rad. Meas., 106, 450-454, doi: 10.1016/j.radmeas.2017.06.001.

V. Stepanenko, T. Rakhypbekov, K. Otani, S. Endo, K. Satoh, N. Kawano, K. Shichijo, M. Nakashima, T. Takatsuji. A. Sakaguchi, H. Kato, Y. Onda, N. Fujimoto, S. Toyoda, H. Sato, A. Dyussupov, N. Chaizhunusova, N. Sayakenov, D. Uzbekov, A. Saimova, D. Shabdarbaeva, M. Skakov, A. Vurim, V. Gnyrya, A. Azimkhanov, A. Kolbayenkov, K. Zhumadilov, Y. Kairikhanova, A. Kaprin, V. Galkin, S. Ivanov, T. Kolyzhenkov, A. Petukhov, E. Yaskova, I. Belukha, A. Khailov, V. Skvortsov, A. Ivannikov, U. Akhmedova, V. Bogacheva, M. Hoshi (2017) Internal exposure to neutron-activated 56Mn dioxide powder in Wistar rats: part 1: dosimetry, Radiation and Environmental Biophysics, 56 (1) 47-54, doi: 10.1007/s00411-016-0678-x.

K. Zhumadilov, A. Ivannikov, A. Khailov, S. Orlenko, V. Skvortsov, V. Stepanenko, K. Kuterbekov, S. Toyoda, P. Kazymbet and M. Hoshi (2017) Evaluation of external and internal irradiation on uranium mining enterprise staff by tooth enamel EPR spectroscopy, E3S Web of Conferences, 22, 00201, International Conference on Advances in Energy Systems and Environmental Engineering (ASEE17), doi: 10.1051/e3sconf/20172200201.

T. Fujiwara, S. Toyoda, A. Uchida and J. Ishibashi (2017) Thermal stability of ESR signals in hydrothermal anhydrite, Advances in ESR Applications, 33, 9-13.

T. Chuenpee, O. Nishikawa, Y. Kon, K. Ninagawa, S. Toyoda, T. Ogata, T. Uchida, I. Takashima (2017) Gamma radiation-induced thermoluminescence, trace element and paramagnetic defect of quartz from the Sambagawa metamorphic belt, Central Shikoku, Japan, Applied Radiation and Isotopes, 120, 30-39, doi: 10.1016/j.apradiso.2016.11.013.

S. Toyoda, T. Fujiwara, A. Uchida, J. Ishibashi (2016) ESR dating of sea-floor hydrothermal barite: Contribution of 228Ra to the accumulated dose, Geochronometria, 43, 201-206, doi: 10.1515/geochr-2015-0042.

A. Shimada, M. Takada and S. Toyoda (2016) Electron spin resonance signals of quartz in present-day river bed sediments and possible source rocks in the Kizu River basin, Western Japan, Geochronometria, 43, 155-161, doi: 10.1515/geochr-2015-0039.

T. Fujiwara, S. Toyoda, A. Uchida, H. Nishido and J. Ishibashi (2016) The alpha effectiveness of the dating ESR signal in barite: possible dependence with age, Geochronometria, 43, 174-178, doi: 10.1515/geochr-2015-0043.

S. Ishigaki, Kh. Tsogtbaatar, M. Saneyoshi, B. Mainbayar, K. Aoki, S. Ulziitseren, T. Imayama, A. Takahashi, S. Toyoda, Ch. Bayardorj, B. Buyantegsh, J. Batsukh, B. Purevsuren, H. Asai, S. Tsutanaga, K. Fujii (2016) Report of the Okayama University of Science - Mongolian Institute of Paleontology and Geology Joint Expedition in 2016. Bull. Natural Research Center of Okayama University of Science, 42, 33-46.

金丸礼, 蜷川清隆, 西戸裕嗣, 豊田新 (2016) 普通コンドライトのTL測定におけるnanoGrayTL/OSL一体型装置と岡山理科大学TL装置の比較, 岡山理科大学自然科学研究所報告, 42, 21-26.

V. F. Stepanenko, T. K. Rakhypbekov, A. D. Kaprin, S. A. Ivanov, K. Otani, S. Endo, K. Satoh, N. Kawano, T. Takatsuji, M. Nakashima, K. Shichijo, A. Sakaguchi, H. Kato, Y. Onda, N. Fujimoto, S. Toyoda, H. Sato, T. V. Kolyzhenkov, A. D. Petukhov, A. A. Dyussupov, N. Zh. Chaizhunusova, N. B. Sayakenov, D. E. Uzbekov, A. Zh. Saimova, D. M. Shabdarbaeva, L. N. Pivina, M. K. Skakov, A. D. Vurim, V. S. Gnyrya, A. C. Azimkhanov, A. N. Kolbayenkov, K. Sh. Zhumadilov, Y. O. Kairkhanova, E. K. Yaskova, I. G. Belukha, V. G. Skvortsov, A. I. Ivannikov, A. M. Khailov, U. A. Akhmedova, V. V. Bogacheva, Yu. N. Anokhin, S. P. Orlenko, M. Hoshi (2016) Irradiation of laboratory animals by neutron activated dust: development and application of the method – first results of international multicenter study, Risk of Radiation (in Russian), 25 (4), 111-125, doi: 10.21870/0131-3878-2016-25-4-111-125.

豊田新, 村橋美香, 宮川和也 (2016) 回折格子の分光の機能を理解するための物理学基礎実験の改善, 岡山理科大学紀要, 52 A, 17-20.

K. Zhumadilov, A. Ivannikov, V. Stepanenko, S. Toyoda,V. Skvortsov, M. Hoshi (2016) EPR dosimetry study for population residing in the vicinity of fallout trace for nuclear test on 7 August 1962, Radiation protection dosimetry, 172 (1-3), 260-264, doi:10.1093/rpd/ncw178.

V. Kumar, A. K. Srivastava, S. Toyoda, and I. Kaur (2016) Extraction of low-toxicity nanodiamonds from carbonaceous wastes, Fullerenes, Nanotubes, and Carbon Nanotubes, 24 (3) 190-194, doi:10.1080/1536383x.2015.1129323.

S. Toyoda, Y. Yamamoto and Y. Igarashi (2016) Temporal change in ESR signals of quartz in atmospheric dust in Japanese cities, Ed. W. Yokota, JAEA Takasaki Annual report 2014, JAEA-Review 2015-022, 162, doi:10.11484/jaea-review-2015-022.

H. Nisihido, M. Kayama, S. Toyoda and K. Komuro (2016) Cathodoluminescence of feldspar minerals and radiation effects on the luminescent properties, Ed. W. Yokota, JAEA Takasaki Annual report 2014, JAEA-Review 2015-022, 164, doi:10.11484/jaea-review-2015-022.

S. Toyoda, K. Nagashima, and Y. Yamamoto (2016) ESR signals in quartz: Applications to provenance research – A review, Quaternary International, 397, 258-266, doi: 10.1016/j.quaint.2015.05.048.

M. Yoshida, S. Toyoda, K. Ninagawa, M. Takada, A. Shimada (2016) TL and ESR signals in quartz of Kurobe River Sediments, Advances in ESR Applications, 32, 4-10.

M. Asagoe and S. Toyoda (2016) ESR dating of volcanic quartz with impurity centers : comparison of regeneration protocols and dose recovery tests, Advances in ESR Applications, 32, 11-18.

S. Toyoda (2015) Paramagnetic lattice defects in quartz for applications to ESR dating, Quaternary Geochronology, 30, 498-505, doi: 10.1016/j.quageo.2015.05.010.

R. H. Biswas, S. Toyoda, M. Takada, Y. Shitaoka (2015) Multiple approaches to date Japanese marker tephras using optical and ESR methods, Quaternary Geochronology, 30, 350-356, doi: 10.1016/j.quageo.2015.01.004.

P. Voinchet, S. Toyoda, C. Fagueres, M. Hernandez, H. Tissoux, D. Moreno, J.-J. Bahain (2015) Evaluation of ESR residual dose in quartz modern samples, an investigation on environmental dependence, Quaternary Geochronology, 30, 506-512, doi: 10.1016/j.quageo.2015.02.017.

H. Kumagai, H. Watanabe, T. Yahagi, S. Kojima, S. Nakai, S. Toyoda, and J. Ishibashi (2015) Evaluating hydrothermal system evolution using geochronological dating and biological diversity analyses, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 5, pp. 49-59, doi: 10.1007/978-4-431-54865-2_5.

J. Ishibashi, K. Shimada, F. Sato, A. Uchida, S. Toyoda, A. Takamasa, S. Nakai, H. Hyodo, K. Sato, H. Kumagai, and K. Ikehata (2015) Dating of hydrothermal mineralization in active hydrothermal fields in the Southern Mariana Trough, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 23, pp. 289-300, doi: 10.1007/978-4-431-54865-2_23.

T. Fujiwara, S. Toyoda, A. Uchida, J. Ishibashi, S. Nakai, A. Takamasa (2015) ESR dating of barite in sea-floor hydrothermal sulfide deposits in the Okinawa Trough, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 29, pp. 369-386, doi : 10.1007/978-4-431-54865-2_29.

T. Yamanaka, H. Nagashio, R. Nishio, K. Kondo, T. Noguchi, K. Okamura, T. Nunoura, H. Makita, K. Nakamura, H. Watanabe, K. Inoue, T. Toki, K. Iguchi, U. Tsunogai, R. Nakada, S. Ohshima, S. Toyoda, J. Kawai, N. Yoshida, A. Ijiri, and M. Sunamura (2015) The Tarama Knoll: Geochemical and biological profiles of hydrothermal activity, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 40, pp. 497-504, doi: 10.1007/978-4-431-54865-2_40.

K. Nakamura, H. Sato, P. Fryer, T. Urabe, TAIGA 10M Shipboard Scientific Party (2015) Petrography and geochemistry of basement rocks drilled from Snail, Yamanaka, Archaean, and Pika hydrothermal vent sites at the Southern Mariana Trough by Benthic Multi-Coring System (BMS), In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 41, pp. 507-533, doi: 10.1007/978-4-431-54865-2_41.

S. Toyoda, D. Banerjee, H. Kumagai, J. Miyazaki, J. Ishibashi, N. Mochizuki, S. Kojima (2015) Gamma ray doses in water around sea floor hydrothermal area in the Southern Mariana Trough, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 46, pp. 603-606, doi : 10.1007/978-4-431-54865-2_46.

A. Uchida, S. Toyoda, J. Ishibashi, S. Nakai (2015) 226Ra-210Pb and 228Ra-228Th dating of barite in submarine hydrothermal sulfide deposits collected at the Okinawa Trough and the Southern Mariana Trough, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 47, pp. 607-615,　doi:10.1007/978-4-431-54865-2_47.

V. Varma, S. Toyoda, Y. Isono, A. Uchida, D. Banerjee, A. K. Singhvi, J. Ishibashi (2015) OSL dating of sea floor sediments at the Okinawa Trough, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 48, pp. 617-620, doi: 10.1007/978-4-431-54865-2_48.

S. Toyoda, F. Sato, A. Uchida, J. Ishibashi (2015) Immediate change of radiation doses from hydrothermal deposits, In, J. Ishibashi, K. Okino, M. Sunamura, eds., Subseafloor Biosphere Linked to Global Hydrothermal Systems; TAIGA Concept, Springer, Tokyo, Chap. 49, pp. 621-624, doi: 10.1007/978-4-431-54865-2_49.

S. Tsukamoto, S. Toyoda, A. Tani, F. Oppermann (2015) Single aliquot regenerative dose method for ESR dating using X-ray irradiation and preheat,　Radiation Measurements, 81, 9-15. doi :10.1016/j.radmeas.2015.01.018.

S. Toyoda, T. Fujiwara, A. Uchida, J. Ishibashi, S. Nakai, A. Takamasa (2014) ESR dating of barite in sulphide deposits formed by the sea-floor hydrothermal activities, Radiation Protection Dosimetry 159(1-4), 203–211, doi:10.1093/rpd/ncu136.

野曽原吉彦, 豊田新, 高田将志, 島田愛子, 吉田真徳 (2014) 現河床堆積物に含まれる石英のESR信号特性 ―木津川流域を対象として―, ESR応用計測, 30, 4-11, Y. Nosohara, S. Toyoda, M. Takada, A. Shimada, M. Yoshida (2014) Characteristics of ESR signals from quartz in the present fluvial sediments in the Kizu river basin, western Japan, Advances in ESR applications, 30 4-11.

内田乃, 豊田新, H. Tissoux, C. Falguères, 蜷川清隆, D. Miallier (2014) Threshold法を用いたアロカ社製NaI(Tl)シンチレーション検出器による年間線量率の測定, ESR応用計測, 30, 12-15, A. Uchida, S. Toyoda, H. Tissoux, C. Falguères, K. Ninagawa, D. Miallier (2014) Dose rate estimation by Aloka NaI scintilation gamma ray spectrometer using the Threshold Technique, Advances in ESR Applications, 30, 12-15.

M. Kayama, H. Nishido, S. Toyoda, K. Komuro, A. A. Finch, M. R. Lee, and K. Ninagawa (2014) Cathodoluminescence of alkali feldspars and radiation effects on the luminescent properties, American Mineralogoist 99(1),65-75, doi: 10.2138/am.2014.4361.

藤原泰誠 (2013) 院生による研究室紹介, 地球化学会ニュース, 214, 14-16.

豊田新, 藤原泰誠, 石橋純一郎, 中井俊一, 賞雅朝子 (2013) 海底熱水性重晶石のＥＳＲ年代測定，月刊地球号外, 62, 73-84.

Y. Sun, H. Chen, R. Tada, D. Weiss, M. Lin, S. Toyoda, Y. Yan, and Y. Isozaki (2013) ESR signal intensity and crystallinity of quartz from Gobi and sandy deserts in East Asia and implication for tracing Asian dust provenance, Geochemistry, Geophysics, Geosystems, 14 (8), 2615–2627, doi: 10.1002/ggge.20162.

K. Nagashima, R. Tada, S. Toyoda (2013) Westerly jet–East Asian summer monsoon connection during the Holocene, Geochemistry, Geophysics, Geosystems, 14 (12), 5041-5053, doi: 10.1002/2013GC004931.

Y. Yamamoto, S. Toyoda, K. Nagashima, Y. Igarashi and R. Tada (2013) Investigation of the temporal change of the sources of Aeolian dust delivered to East Asia using electron spin resonance signals in quartz, Geochronometria, 40(4), 355-359, doi: 10.2478/s13386-013-0121-x.

A. Shimada, M. Takada, and S. Toyoda (2013): Characteristics of ESR signals and TLCLs of quartz included in various source rocks and sediments in Japan: A clue to sediment provenance, Geochronometria, 40(4), 334-340,（査読有）doi: 10.2478/s13386-013-0111-z.

M. Kayama, H. Nishido, S.Toyoda, K. Komuro, A.A. Finch, M.R. Lee and K. Ninagawa (2013) Response of cathodoluminescence of alkali feldspar to He+ ion implantation and electron irradiation, Geochronometria, 40(4), 244-249, doi: 10.2478/s13386-013-0130-9.

M. Kayama, H. Nishido, S. Toyoda, K. Komuro, A. A. Finch, M. R. Lee, K. Ninagawa (2013) He+ ion implantation and electron irradiation effects on cathodoluminescence of plagioclase, Phys. Chem. Minerals, 40, 531-545, doi: 10.1007/s00269-013-0590-8.

A. Takamasa, S. Nakai, F. Sato, S. Toyoda, D. Banerjee, J. Ishibashi (2013) U-Th radioactive disequilibrium and ESR dating of a barite-containing sulfide crust from South Mariana Trough, Quaternary Geochronology. 15, 38-46, doi:10.1016/j.quageo.2012.12.002.

K. Zhumadilov, A. Ivannikov, V. Stepanenko, D. Zharlyganova, S. Toyoda, Z. Zhumadilov and M. Hoshi (2013) ESR dosimetry study of population in the vicinity of the Semipalatinsk Nuclear Test Site, Jour.Radiat. Reseach, 54 (4), 775-779, doi: 10.1093/jrr/rrt008.

長島佳菜, 豊田新 (2012) 風成塵から眺めた古気候研究, エアロゾル研究, Paleoclimate reconstruction based on Asian Dust in the marine sediments, 27(3), 284-291, doi.org/10.11203/jar.27.284.

S. Toyoda, F. Sato, H. Nishido, M. Kayama, J. Ishibashi (2012) The alpha effectiveness of the dating ESR signal in barite, Radiation Measurements, 47 (9), 900-902, doi: 10.1016/j.radmeas.2012.04.016.

H. Tissoux, P. Voinchet, F. Lacquement, F. Prognon, D. Moreno, C. Falguères, J.-J. Bahain, S. Toyoda (2012) Investigation on non-optically bleachable components of ESR aluminium signal in quartz, Radiation Measurements, 47 (9), 894-899, doi: 10.1016/j.radmeas.2012.03.012.

豊田新, 内田乃, 高橋真由美 (2012) 屋外のふき取りによって検出された福島第一原子力発電所事故に伴うさいたま市民家への降下放射能, Proceedings of the 13th Workshop on Environmental Radioactivity, KEK Proceedings 2012-6, 87-92.

K. Nagashima, Y. Asahara, F. Takeuchi, N. Harada, S. Toyoda, R. Tada (2012) Contribution of detrital materials from the Yukon River to the continental shelf sediments of the Bering Sea based on the electron spin resonance signal intensity and crystallinity of quartz, Deep-Sea Reseach Ⅱ: Topical studies in oceanography, (61-64), 145-154, doi: 10.1016/j.dsr2.2011.12.001.

J. S. Tawale, H. Nishido, S. Toyoda, M. Deepa, N. Bahadur, M. Maniraj, S. R. Baruman, B. R. Chakraborty and A. K.Srivastava (2012) Revelation of temperature-dependent cathodoluminescence by employing nanostructural pathway in feincorporated Zno, Symposium of Nanodevices and Nanofabrication in ICMAT2011, Chapter16, 231-250, 10.1201/b14791-17.

P. Fattibene, A. Wieser, E. Adolfsson, L. A. Benevides, M. Brai, F. Callens, V. Chumak, B. Ciesielski, S. Della Monaca, K. Emerich, H. Gustafsson, Y. Hirai, M. Hoshi, A. Israelsson, A. Ivannikov, D. Ivanov, J. Kaminska, W. Ke, E. Lund, M. Marrale, L. Martens, C. Miyazawa, N. Nakamura, W. Panzer, S. Pivovarov, R. A. Reyes, M. Rodzi, A. A. Romanyukha, A. Rukhin, S. Sholom, V. Skvortsov, V. Stepanenko, M. A. Tarpan, H. Thierens, S. Toyoda, F. Trompier, E. Verdi, K. Zhumadilov (2011) The 4th international comparison on EPR dosimetry with tooth enamel Part 1: Report on the results, Radiation Measurements, 46, 765-771, doi: 10.1016/j.radmeas.2011.05.001.

M. Kayama, H. Nishido, S. Toyoda, K. Komuro, K. Ninagawa (2011) Combined cathodoluminescence and Micro-Raman study of He+-ion-implanted albite, Spectroscopy Letters, 44, 526-529, doi: 10.1080/00387010.2011.610415.

M. Asagoe, S. Toyoda, P. Voinchet, C. Falguères, H. Tissoux, T. Suzuki, D. Banerjee (2011) ESR dating of tephra with dose recovery test for impurity centers in quartz, Quaternary International, 246,118-123, doi: 10.1016/j.quaint. 2011.06.027.

K. Zhumadilov, A. Ivannikov, D. Zharlyganova, Zh. Zhumadilov, V. Stepanenko, Sh. Abralina, L. Sadvokasova, A. Zhumadilova, S. Toyoda, S. Endo, T. Okamoto, M. Hoshi (2011) ESR dosimetry study for the residents of Kazakhstan exposed to radioactive fallout on 24, August 1956, Radiation Measurements, 46, 793-796, doi: 10.1016/j.radmeas.2011.05.005.

S. Toyoda, A. Kondo, K. Zhumadilov, M. Hoshi, C. Miyazawa, A. Ivannikov (2011) ESR measurements of background doses in teeth of Japanese residents, Radiation Measurements, 46 (9), 797-800, doi: 10.1016/j.radmeas. 2011.05.008.

F. Sato, S. Toyoda, D. Banerjee, J. Ishibashi (2011) Thermal stability of ESR signals in hydrothermal barites, Radiation Measurements, 46 (9), 866-870, doi: 10.1016/j.radmeas.2011.05.007.

K. Zhumadilov, A. Ivannikov, D. Zharlyganova, V. Stepanenko, Z. Zhumadilov, K. Apsalikov, S. Toyoda, S. Endo, K. Tanaka, C. Miyazawa, T. Okamoto, M. Hoshi (2011) The influence of the Lop Nor Nuclear Weapons Test Base to the population of the Republic of Kazakhstan, Radiation Measurements, 46 (4), 425-429, doi: 10.1016/j.radmeas.2011.01.021.

M. Kayama, H. Nishido, S. Toyoda, K. Komuro, K. Ninagawa (2011) Radiation effects on cathodoluminescence of albite, American Mineralogist, Mineralogical Society of America, 96 (8-9), 1238-1247, doi: 10.2138/am.2011.3780.

西戸裕嗣, 鹿山雅裕, 豊田新, 小室光世 (2011) カソードルミネッセンスによる鉱物の放射線損傷の定量評価とその応用,平成21年度 原子力機構施設利用共同研究成果報告書, 8-18.

K. Nagashima, R. Tada, A. Tani, Y. Sun, Y. Isozaki, S. Toyoda, H. Hasegawa (2011) Millennial-scale oscillations of the westerly jet path during the last glacial period, Journal of Asian Earth Sciences, 40 (6), 1214-1220, doi: 10.1016/j.jseaes.2010.08.010.

D. Banerjee, S. Toyoda, M. Takada, A. Shimada (2011) Component resolved optically stimulated luminescence investigations and age determination for a quartz sample from marine terrace sediments in Fukui region, central Japan, Advances in ESR Applications, 27, 7-10.

S. Toyoda, F. Sato, D. Banerjee, J. Ishibashi (2011) Characteristics of the radiation induced ESR signals in barite, Advances in ESR applications, 27, 4-6.

S. Toyoda (2011) The E1’ center in natural quartz: Its formation and applications to dating and provenance researches, Geochronometria, 38(3), 242-248, doi: 10.2478/s13386-011-0035-4.

長島佳菜, 多田隆治, 豊田 新 (2010) 石英粒子から黄砂の起源を探る～結晶化度・電子スピン共鳴分析より～, K. Nagashima, R. Tada, S. Toyoda (2010), Provenance study of the Asian dust based on crystallinity and electron spin resonance signal intensity of quartz, Proceedings of the Eleventh Workshop on Environmental Radioactivity, 10-18 in Japanese with English abstract.

T. Okumura, S. Toyoda, F. Sato, A. Uchida, J. Ishibashi, and S. Nakai (2010) ESR dating of marine barite in chimneys deposited from hydrothermal vents, Geochronometria, 37, 57-61, doi:10.2478/v10003-010-0091-z.

Y. Yamamoto, S. Toyoda, K. Nagasima, Y. Igarashi, and R. Tada (2010) The grain size influence on the E1' centre observed in quartz of atmospheric deposition at two Japanese cities: a preliminary study, Geochronometria, 37, 9-12, doi: 10.2478/v10003-010-0024-2.

A. K. Srivastava, Praveen, M. Arora, S. K. Gupta, B. R. Chakraborty, S. Chandra, S. Toyoda, H. Bahadur (2010) Nanostructural features and optical performance of RF magnetron sputtered ZnO thin films, Journal of Materials Science and Technology, 26 (11), 986-990, doi: 10.1016/S1005-0302(10)60161-2.

豊田　新 (2010) 歯を用いた電子スピン共鳴線量計測, 日本電子ニュース, 42, 14-17

R. Tada, H. Zheng, N. Sugiura, Y. Isozaki, H. Hasegawa, Y. Sun, W. Yang, K. Wang, and S. Toyoda (2010) Desertification and dust emission history of the Tarim Basin and its relation to the uplift of northern Tibet, In, P. D. Clift, R. Tada and H. Zheng eds. Monsoon Evolution and Tectonics-Climate Linkage in Asia, Geological Soc. London, Special Publications 2010, 342, 45-65, doi: 10.1144/SP342.5.

M. Sakamoto, A. Gucsik, H. Nishido, K. Ninagawa, T. Okumura, and S. Toyoda (2010) Micro-Raman spectroscopy of anomalous planar microstructures in quartz from Mt. Oikeyama: Discovery of probable impact crater in Japan, Meteoritics and Planetary Science, 45(1), 32-42, doi: 10.1111/j.1945-5100.2009.01003.x.

S. Toyoda, Y. Hino, A. A. Romanyakha, O. Tarasov, S.P. Pivovarov, and M. Hoshi (2010) 90Sr in Mammal teeth from contaminated areas in the former Soviet Union measured by imaging plates, Health Physics, 98(2); 352-359, doi: 10.1097/01.HP.0000346705.98995.e7.

D. Bhattacharjee, A. I. Ivannikov, K. Zhumadilov, V. F. Stepanenko, K. Tanaka, S. Endo, M. Ohtaki, S. Toyoda, J. Bhattacharyya and M. Hoshi (2009) Radiation dose measurement by electron spin resonance studies of tooth enamel in lime and non-lime consuming individuals from the Silchar Region of Northeast India, Journal of Radiation Research, 50(6), 559-565, doi: 10.1269/jrr.09044.

A. K. Srivastava, K. Ninagawa, S. Toyoda, B. R. Chakraborty and S. Chandra (2009) Induced thermoluminescence of X-ray irradiated nanostructured zinc oxide, Optical Materials, 32(2), 410-413, doi: 10.1016/j.optmat.2009.09.007.

T. Okumura, A. Gucsik, H. Nishido, K. Ninagawa and S. Toyoda (2009) Cathodoluminescence microcharacterization of ballen silica in impactites. “Micro-Raman Spectroscopy and Luminescence Studies in the Earth and Planetary Sciences.” American Institute of Physics, A. Gucsik (Ed) AIP Proceedings of the International Conference, 1163, 148-154, doi: 10.1063/1.3222881.

石橋純一郎, 中井俊一, 豊田新, 熊谷英憲, 野口拓郎, 石塚治 (2009) 地球化学的手法による熱水活動変遷の解析 / J. Ishibashi, S. Nakai, S. Toyoda, H. Kumagai, T. Noguchi and O. Ishizuka, (2009) Geochemical and geochronological studies on the evolution of submarine hydrothermal systems, 地学雑誌 (Journal of Geography), 118(6), 1186-1204, doi: 10.5026/jgeography.118.1186.

K. Zhumadilov, A. Ivannikov, D. Zharlyganova, Z. Zhumadilov, V. Stepanenko, K. Apsalikov, M. R. Ali, A. Zhumadilova, S. Toyoda, S. Endo, K. Tanaka, T. Okamoto and M. Hoshi (2009) ESR dosimetry study on population of settlements nearby Ust-Kamenogorsk city, Kazakhstan, Radiation and Environmental Biophysics, 48 (4), 419-425, doi: 10.1007/s00411-009-0235-y.

T. Usami, S. Toyoda, H. Bahadur, A.K. Srivastava and H. Nishido (2009) Characterization of the E1’center in quartz: Role of aluminum hole centers and oxygen vacancies, Physica B: Condensed Matter, 404(20), 3819-3823, doi: 10.1016/j.physb.2009.07.075.

内田乃, 豊田新, H. Tissoux, C. Falgueres, 蜷川清隆 (2009) 低バックグラウンド純ゲルマニウム半導体検出器による地球化学標準試料中の放射性核種濃度の研究室間相互比較, ESR応用計測, 第25巻 2009年3月, pp4-6 / A. Uchida, S. Toyoda, H. Tissoux, C. Falguères, and K. Ninagawa, Inter-laboratory comparison of the concentrations of radioactive nuclei in geochemical standards by low background pure germanium gamma ray detectors, Advances in ESR Applications, 25, 4-6.

山本裕哉, 豊田新, 磯崎裕子, Y. Sun, 多田隆治, 長島佳菜, 谷篤史 (2009) 石英中の不純物中心のESR信号を用いた風送塵起源地の分別の可能性、ESR応用計測、第25巻2009年3月、pp 7-12 / Y. Yamamoto, S. Toyoda, Y. Isozaki, Y. Sun, R. Tada, K. Nagasima, and A. Tani, Characterization of the eolian dust sources by ESR of impurity centers in quartz, Advances in ESR Applications, 25, 7-12, doi: 10.14862/geochemproc.56.0.22.0.

S. Toyoda, H. Miura, and H. Tissoux (2009) Signal regeneration in ESR dating of tephra with quartz, Radiat. Meas., 44(5-6), 483-487. doi: 10.1016/j.radmeas.2009.03.002.

S. Toyoda, K. Hosogi, K. Nagashima, Y. Isozaki, Y. Sun and R. Tada (2009) Paramagnetic defects in quartz as the proxies for provenance of Aeolian and fluvial sediments, Proceedings for the International Conference on Luminescence and its Applications (ICLA-2008), Vol-18, 165-167.

T. Usami, S. Toyoda, H. Bahadur (2009) The effect of Al center to the formation of E1' center in Quartz, Proceedings of International Conference on Luminescence and its Applications (ICLA-2008), Vol-18, 162-164.

S. Toyoda, K. Hosogi, K. Nagashima, Y. Isozaki, Y. Sun, and R. Tada (2008) Paramagnetic defects in quartz as the proxies for provenance of aeolian and fluvial sediments, Proceedings of the Third International Conference on Luminescence and its Applications, 36-38.

Y. Isozaki, R. Tada, Y. Sun, K. Nagashima, H. Zheng, S. Toyoda and A. Tani (2008) Provenance changes of eolian dust at lingtai section in the Chinese loess plateau since 7 Ma and its implication for desert development in East Asia, Climate of the Past Discussions, 4, 335-374.

奥田俊夫, 藤田哲史, 藤江康太郎, 北川靖夫, 齋藤萬之助, 成瀬敏郎, 豊田新 (2008)富山市南部神通川右岸の更新世台地上に分布する細粒質土壌母材へのアジア大陸北部先カンブリア界由来風成塵の影響/T. Okuda, T. Fujita, K. Fujie, Y. Kitagawa, M. Saito, T. Naruse, S. Toyoda (2008) Influence of Eolian Dust Originated in the Precamburian Area in Northern Asia Continent on a Fine-Textured Soil Distributed on the Pleistocene Plateau, the Right Bank of Jinzu River in Sarukura, Toyama City, Central Japan.,ペドロジスト(PEDOLOGIST): 52(1), 35-41.

奥田俊夫, 藤田哲史, 藤江康太郎, 北川靖夫, 齋藤萬之助, 成瀬敏郎, 豊田新 (2008) 静岡県西部の更新世台地上に分布する細粒質土壌母材へのアジア大陸北部由来風成塵の影響/ T. Okuda, T. Fujita, K. Fujie, Y. Kitagawa, M. Saito, T. Naruse, S. Toyoda (2008) Infuluence of Eolian Dust brought from the Precambrian Area in Northern Asia on the Parent Materials in a Fine-Textured Soils on the Pleistocene Plateau in the Western Part of Shizuoka Prefecture, Central Japan, ペドロジスト(PEDOLOGIST): 52(1), 2-9.

H. Bahadur, K. Ninagawa, H. Nisido, T. Usami, M. Kayama, S. Toyoda (2008) Radiation effects on premium Q and supreme Q cultured quartz crystals, Proceedings for the 2008 IEEE International Frequency Control Symposium, 213-218, 10.1109/FREQ.2008.4622992.

H. Tissoux, S. Toyoda, C. Falgueres, P. Voinchet, M. Takada, J.-J. Bahain and J. Despriee (2008) ESR dating of sedimentary quartz from two pleistocene deposits using Al and Ti-centers, Geochronometria, 30 (1), 23-31, doi: 10.2478/v10003-008-0004-y.

T. Okumura, H. Nishido, S. Toyoda, T. Kaneko, S. Kosugi, Y. Sawada and K. Komuro (2008) Evaluation of radiation-damage halos in quartz by cathodoluminescence as a geochronological tool, Quatern. Geochronol., 3(4), 342-345, doi:10.1016/j.quageo.2008.01.006.

Y. Sun, R. Tada, J. Chen, Q. Liu, S. Toyoda, A. Tani, J. Ji, Y. Isozaki (2008) Tracing the provenance of fine-grained dust deposited on the central Chinese Loess Plateau, Geophys. Res. Lett., 35, L01804, doi:10.1029/2007GL031672.

日野幸胤, 豊田新, A. Romanyukha, 田中憲一, 星正治 (2008) KClを標準試料とした、イメージングプレートによる歯の90Srの定量／Use of KCl a standard for 90Sr measurement by imaging plates, Advances in ESR Applications, 24, 8-12.

H. Bahadur, H. Tissoux, T. Usami and S. Toyoda (2008) Radiation effects in natural quartz crystals, Journal of Materials Science: Materials in Electronics (Springer), 19(8-9), 709-713, doi:10.1007/s10854-007-9388-0.

K. Zhumadilov, V. Stepanenko, A. Ivannikov, Z. Zhumadilov, D. Zharlyganova, S. Toyoda, K. Tanaka, S. Endo, M. Hoshi (2008) Measurement of absorbed doses from X-ray baggage examinations to tooth enamel by means of ESR and glass dosimetry, Radiation and Environmental Biophysics, 47 (4), 541-545, doi: 10.1007/s00411-008-0184-x.

K. Tanaka, S. Endo, S. Toyoda, E. Tieliewuhan, A. Romanyukha, and M. Hoshi (2007) Monte Carlo-based calculation of imaging plate response to 90Sr in teeth: experimental validation of the required correction on sample thickness, Radiat. Environ. Biophys., 46(3), 215-220, doi: 10.1007/s00411-007-0102-7.

Y. Sun, R. Tada, J. Chen, H. Chen, S. Toyoda, A. Tani, Y. Isozaki, K. Nagashima, H. Hasegawa and J. Ji (2007) Distinguishing the sources of Asian dust based on electron spin resonance signal intensity and crystallinity of quartz, Atmospheric Environment, 41(38), 8537-8548, doi: 10.1016/j.atmosenv.2007.07.014.

藤江康太郎, 北川靖夫, 齋藤萬之助, 豊田新, 成瀬敏郎 (2007) 大垣市金生山と石垣島真栄里に分布する暗赤色土の性状と母材の均一性 /K. Fujie, Y. Kitagawa, M. Saito, S Toyoda and T. Naruse, 　Properties and uniformity of parent materials in dark red soils distributed in Mt. Kinshousan, Ohgaki City, Gifu Prefecture, Central Japan, and in Maesato, Isigaki Island, Okinawa Prefecture Southwest Japan.　ペドロジスト（PEDOLOGIST）, 51(2), 56-67.

藤田哲史, 北川靖夫, 奥田俊夫, 藤江康太郎, 齋藤萬之助, 豊田新, 成瀬敏郎 (2007) 与那国島に分布する細粒質赤色系土壌の母材への風成塵の影響－微細石英中の酸素空格子量及び粘土鉱物組成－/ T. Fujita, Y. Kitagawa, T. Okuda, K. Fujie, M. Saito, S. Toyoda and T. Naruse, Influence of eolian dust on the parent materials in four reddish soils distributed in Yonaguni Island; judging from ESR-signal intensity of silt-sized fine quartz and composition in these soils, ペドロジスト（PEDOLOGIST）, 51(2), 68-75.

奥田俊夫, 藤田哲史, 藤江康太郎, 北川靖夫, 齋藤萬之助, 成瀬敏郎. 豊田新 (2007) 能登半島宝立山山頂付近に分布する細粒質土壌母材へのアジア大陸北部の先カンブリア界由来の風成塵の影響 / T. Okuda, T. Fujita, K. Fujie, Y. Kitagawa, M. Saito, T. Naruse, and S. Toyoda, Influence of eolian dust brought from the precambrian area in Northern Asia on the parent materials in a fine-textured soil developed on the tertiary rock in Mt. Horyu, Noto Peninsula, Central Japan, ペドロジスト（PEDOLOGIST）, 51(2), 104-110.

藤田哲史, 奥田俊夫, 藤江康太郎, 北川靖夫, 齋藤萬之助, 豊田新, 成瀬敏郎 (2007) 能登半島猿山岬付近に分布する細粒質土壌の母材へのアジア大陸北部に由来する風成塵の影響 / T. Fujita, T. Okuda, K. Fujie, Y. Kitagawa, M. Saito, S. Toyoda, and T. Naruse, Influence of eolian dust brought from Northen Asia Continent on the parent materials in a fine-textured soil developed on the bedrock of the tertiary rock near Cape Saruyama, in Noto Peninsula, Central Japan, ペドロジスト（PEDOLOGIST）, 51(2), 97-103.

藤田哲史, 北川靖夫, 奥田俊夫, 藤江康太郎, 齋藤萬之助, 豊田新, 成瀬敏郎 (2007) 秋田県男鹿半島入道崎付近に分布する2点の細粒質土壌におけるアジア大陸北部に由来する風成塵の母材への影響 / T. Fujita, Y. Kitagawa, T. Okuda, K. Fujie, M. Saito, S. Toyoda, and T. Naruse, Influence of eolian dust on the parent materials in two fine-textured soils developed on the bedrocks of the neogene tertiary tuffeceous rocks near Cape Nyudo, in Oga Peninsula, Northeast Japan,　ペドロジスト（PEDOLOGIST）, 51(2), 89-96.

M. Hoshi, S. Toyoda, A. Ivannikov, K. Zhumadilov, A. Fukumura, K. Apsalikov, Zh. S. Zhumadilov, S. Bayankin, V. Chumak, B. Ciesielski, V. De Coste, S. Endo, P. Fattibene, D. Ivanov, C. A. Mitchell, S. Onori, M. Penkowski, S. P. Pivovarov, A. Romanyukha, A. B. Rukhin, K. Schultka, T. A. Seredavina, S. Sholom, V. Skvortsov, V. Stepanenko, K. Tanaka, F. Trompier, A. Wieser and G. Wolakiewicz (2007) Interlaboratory comparison of tooth enamel dosimetry on Semipalatinsk region: Part 1, general view, Radiat. Meas., 42(6-7), 1005-1014, doi:10.1016/j.radmeas.2007.05.045.

A. Ivannikov, S. Toyoda, M. Hoshi, K. Zhumadilov, A. Fukumura, K. Apsalikov, Zh. Zhumadilov, S. Bayankin, V. Chumak, B. Ciesielski, V. De Coste, S. Endo, P. Fattibene, D. Ivanov, C.A. Mitchell, M. Nalapko, S. Onori, M. Penkowski, S. Pivovarov, A. Romanyukha, A. B. Rukhin, D. Sanin, K. Schultka, T. Seredavina, S. Sholom, V. Skvortsov, V. Stepanenko, K. Tanaka, F. Trompier, A. Wieser and G. Wolakiewicz (2007) Interlaboratory comparison of tooth enamel dosimetry on Semipalatinsk region: Part 2, Effects of spectrum processing, Radiat. Meas., 42(6-7), 1015-1020, doi:10.1016/j.radmeas.2007.05.046.

S. Toyoda, A. Romanyukha, Y. Hino, S. Itano, H. Imata, O. Tarasov and M. Hoshi (2007) Effect of chemical treatment on ESR dosimetry of cow teeth: Application to the samples from Southern Urals, Radiat. Meas., 42(6-7), 1178-1180, doi: 10.1016/j.radmeas.2007.05.012.

H. Tissoux, C. Falguères, P. Voinchet, S. Toyoda, J. J. Bahain, J. Despriée (2007) Potential use of Ti-center in ESR dating of fluvial sediment, Quaternary Geochronology, 2 (1-4), 367-372, doi:10.1016/j.quageo.2006.04.006.

K. Nagashima, R. Tada, A. Tani, S. Toyoda, Y. Sun, and Y. Isozaki (2007) Contribution of Aeolian dust in Japan Sea sediments estimated from ESR signal intensity and crystallinity of quartz, Geochemistry, Geophysics, Geosystems., 8, Q02Q04, doi: 10.1029/2006GC001364.

K. Nagashima, R. Tada, H. Matsui, T. Irino, A. Tani, and S. Toyoda (2007) Orbital- and Millennial-scale variations in Asian dust transport path to the Japan Sea, Palaeogeography, Palaeoclimatology, Palaeoecology, 247 (1-2), 144-161, doi: 10.1016/j.palaeo.2006.11.027.

K. Zhumadilov, A. Ivannikov, K. Apsalikov, Zh.Zhumadilov, D. Zharlyganova, V. Stepanenko, V. Skvortsov, G. Berekenova, S. Toyoda, S. Endo, K. Tanaka, C. Miyazawa, M. Hoshi (2007) Results of tooth enamel ESR dosimetry for population living in the vicinity of the Semipalatinsk nuclear test site, Radiat.Meas., 42(6-7), 1049-1052, doi: 10.1016/j.radmeas.2007.05.009.

Y. Kitagawa, Y. Ohnishi, K. Fujie, M. Saito, S. Toyoda, and T. Naruse (2006) ESR-signal intensity associated with the oxygen vacancy in silt-sized fine quartz in the soils developed in the hilly area surrounding Fukui plain, central Japan, Clay Science, 13 (3), 89-92, doi: 10.11362/jcssjclayscience1960.13.89.

S. Toyoda, S. Tsukamoto, S, Hameau, H. Usui, T. Suzuki (2006) Dating of Japanese Quaternary tephras by ESR and Luminescence methods, Quaternary Geochronology, 1 (4), 320-326, doi: 10.1016/j.quageo.2006.03.007.

豊田　新（2006）石英中の酸素空孔に関連したＥＳＲ信号の古環境変動研究への応用，地質技術, 0, 43-50.

A. Wieser, R. Debuyst, P. Fattibene, A. Meghzifene, S. Onori, S. N. Bayankin, A. Brik, A. Bugay, V. Chumak, B. Ciesielski, M. Hoshi, H. Imata, A. Ivannikov, D. Ivanov, M. Junczewska, C. Miyazawa, M. Penkowski, S. Pivovarov, A. Romanyukha, L. Romanyukha, D. Schauer, O. Scherbina, K. Schultka, S. Sholom, V. Skvortsov, V. Stepanenko, J. A. Thomas, E. Tielewuhan, S. Toyoda, F. Trompier (2006) The third international intercomparison on EPR tooth dosimetry: Part 2, final analysis, Radiat. Protect. Dosim., 120(1-4), 176-183. doi: 10.1093/rpd/nci549.

E. Tieliewuhan, A. Ivannikov, K. Zhumadilov, M. Nalapko, D. Tikunov, V. Skvortsov, V. Stepanenko, S. Toyoda, K. Tanaka, S. Endo and M. Hoshi (2006) Spectra processing at tooth enamel dosimetry: Analytical description of EPR spectrum at different microwave power, Radiation Measurements, 41(4), 410-417. doi: 10.1016/j.radmeas.2005.08.002.

S. Toyoda, A. Kadoma, Y. Ueda, O. Tarasov, E. Krylova, A. Romanyukha, K. Tanaka, E. Tielieuhan and M. Hoshi, (2006) Assessment of Sr-90 in cow’s teeth using plane optic-stimulated luminescent detectors. Correlation between the obtained data and activity of the soil contaminated due to the Kyshtym accident, Radiation Safety Problems, 2, 29-37 (in Russian).

S. Toyoda, H. Imata, A. Romanyukha, and M. Hoshi (2006) Toward high sensitivity ESR dosimetry of mammal teeth : The effect of chemical treatment, Jour. Radiat. Res. 47, A71-A74, doi:10.1269/jrr.47.A71

E. Tieliewuhan, K. Tanaka, S. Toyoda, A. Kadoma, S. Endo, A. Romanyukha, O. Tarasov, and M. Hoshi (2006) 90Sr concentration in cow teeth from South Ural region, Russia, using Monte Carlo simulation, Jour. Radiat. Res. 47, A117-A120, doi:10.1269/jrr.47.A117.

K. Zhumadilov, A. Ivannikov, K. N. Apsalikov, Z. Zhumadilov, S. Toyoda, D. Zharlyganova, E. Tieliewuhan, S. Endo, K. Tanaka, C. Miyazawa, T. Okamoto, and M. Hoshi (2006) Radiation dose estimation by tooth enamel EPR dosimetry for residents of Dolon and Bodene, Jour. Radiat. Res. 47, A47-A53, doi: 10.1269/jrr.47.A47.

A. Ivannikov, K. Zhumadilov, E. Tieliewuhan, L. Jiao, D. Zharlyganova, K. N. Apsalikov, G. Berekenova, Z. Zhumadilov, S. Toyoda, C. Miyazawa, V. Skvortsov, V. Stepanenko, S. Endo, K. Tanaka, and M. Hoshi (2006) Results of EPR dosimetry for population in the vicinity of the most contaminating radioactive fallout trace after the first nuclear test in the Semipalatinsk Test Site, Jour. Radiat. Res. 47, A39-A46, doi: 10.1269/jrr.47.A39.

K. Tanaka, S. Endo, A. Ivannikov, S. Toyoda, E. Tieliewuhan, K. Zhumadilov, C. Miyazawa, S. Suga, K. Kitagawa, and M. Hoshi (2006) Study on influence of X-ray baggage scan on ESR dosimetry for SNTS using human tooth enamel, Jour. Radiat. Res. 47, A81-A83, doi: 10.1269/jrr.47.A81.

V. F. Stepanenko, M. Hoshi, I. K. Bailiff, A. I. Ivannikov, S. Toyoda, M. Yamamoto, S. L. Simon, M. Matsuo, N. Kawano, Z. Zhumadilov, M. S. Sasaki, R. I. Rosenson, and K. N. Apsalikov (2006) Around semipalatinsk nuclear test site: Progress of dose estimation relevant to the consequences of nuclear tests, Jour. Radiat. Res. 47, A1-A13, doi: 10.1269/jrr.47.A1.

成瀬敏郎, 鈴木信之, 井上伸夫, 豊田新, 蓑輪貴治, 安場裕史, 矢田貝真一 / T. Naruse, N. Suzuki, N. Inoue, S. Toyoda, T. Minowa, H. Yasuba, S. Yatagai (2005) 岡山県細池湿原にみられる過去3万年間の堆積環境/ Depositional environmental changes over the past 30,000 years at Hosoike Moor, Okayama Prefecture, Western Japan, 地学雑誌/ Journal of Geography, 114 (5), 811-819, doi: 10.5026/jgeography.114.5_811.

Y. Kitagawa, H. Imoto, M. Saito, H. Kurihara, K. Fujie, S. Toyoda, and T. Naruse (2005) Mineral composition of clay fractions and oxygen vacancies in silt-sized quartz in soils on the Ka-Etsu Plateau, Fukui, Central Japan – possibility of eolian dust brought from northern Asia as parent material of soils, Soil Sci. Plant Nutr., 51 (7), 999-1010 (SSPN Award 受賞), doi: 10.1111/j.1747-0765.2005.tb00139.x.

A. Wieser, R. Debuyst, P. Fattibene, A. Meghzifene, S. Onori, S. N. Bayankin, B. Blackwell, A. Brik, A. Bugay, V. Chumak, B. Ciesielski, M. Hoshi, H. Imata, A. Ivannikov, D. Ivanov, M.Junczewska, C. Miyazawa, B. Pass, M. Penkowski, S. Pivovarov, A. Romanyukha, L. Romanyukha, D. Schauer, O. Scherbina, K. Schultka, A. Shames, S. Sholom, A. Skinner, V. Skvortsov, V. Stepanenko, E. Tielewuhan, S. Toyoda, F. Trompier (2005) The 3rd international intercomparison on EPR tooth dosimetry: Part 1, general analysis, Appl. Radiat. Isot.,62 (2), 163-171, doi: 10.1016/j.apradiso.2004.08.027.

S. Toyoda, D. Takeuchi, T. Asai, K. Komuro, and Y. Horikawa (2005) Spin-spin relaxation times of the E1’ center in quartz with and without irradiation: implications for the formation process of the oxygen vacancies in nature, Radiat. Meas., 39 (5), 503-508. doi:10.1016/j.radmeas.2004.09.002.

S. Toyoda (2005) Formation and decay of the E1’ center and its precursor in natural quartz: Basics and an application to paleoenvironmental research, Proceedings for the National Conference on Luminescence and its Applications, 12, 28-31.

S. Toyoda (2005) Formation and decay of the E1’ center and its precursor in natural quartz: basics and applications, Appl. Radiat. Isot., 62 (2), 325-330. doi:10.1016/j.apradiso.2004.08.014.

S. Toyoda, E. Tielewuhan, A. Romanyukha, A. Ivannikov, C. Miyazawa, M. Hoshi, and H. Imata (2005) Comparison of three methods of numerical procedures for ESR dosimetry of human tooth enamel, Appl. Radiat. Isot., 62 (2), 181-185. doi:10.1016/j.apradiso.2004.08.026.

田中憲一, 星正治, E. Tieliewuhan, A. Ivannikov, 宮澤忠蔵, 豊田新, 菅慎治, 北川和英, 竹岡清二, 遠藤暁（2004）歯のＥＳＲ線量測定法におけるＸ線手荷物検査の影響，長崎医学会雑誌, 79, 171-174.

島田愛子, 豊田新（2004）石英の不純物中心のESR測定に適切な温度及びマイクロ波の条件 / The optimal conditions of microwave and temperature of ESR measurement suitable for impurities centers in quartz，Adv. ESR Appl. 21, 13-16.

豊田新（2004）ウラン鉱床の生成過程及び古環境変動についての研究への応用　－石英中の酸素空孔に関連したＥＳＲ信号を用いて－，放射線と産業, 101, 18-24.

S. Toyoda, Y. Ueda, H. Imata, A. Romanyukha, M. Hoshi, N. Lyubashevskiy, and C. Miyazawa (2004) ESR dosimetry and 90Sr concentration of cow teeth from Southern Urals, Proceedings for the 11th International Congress of the International Radiation Protection Association, 3f18.

横山正, 島田愛子, 梅村崇志, 豊田新（2004）神津島流紋岩質単成火山群のＥＳＲ年代 / ESR ages of rhyolitic monogenetic volcanoes in Kozushima, Japan, Bullentin of the Volcanological Society of Japan, 火山, 49 (1), 23-32.

P. Voinchet, C. Falguères, M. Laurent, S. Toyoda, J.J. Bahain and J.M. Dolo (2003) Artificial optical bleaching of the Aluminium center in quartz implications to ESR dating of sediments, Quaternary Science Reviews (Quatern. Geochronol.), 22 (10-13), 1335-1338. doi:10.1016/S0277-3791(03)00062-3.

S. Toyoda and C. Falguères (2003) The method to represent the ESR signal intensity of the aluminum hole center in quartz for the purpose of dating, Adv. ESR Appl., 20, 7-10.

前田達也, 豊田新 (2003) Skinflint dating の原理を用いた捏造遺跡における石器判別法の試み, Adv. ESR Appl., 20, 11-13.

豊田新, 日高清彦, 西戸裕嗣, 高松信樹, 井上源喜 (2003) 堆積物の電子スピン共鳴信号によるバイカル湖における環境変動研究の可能性，月刊地球号外，42, 143-148.

S. Toyoda, H. Tanizawa, A. A. Romanyukha, C. Miyazawa, M. Hoshi, Y. Ueda, and Y. Nitta (2003) Gamma ray dose response of ESR signals in tooth enamel of cows and mice in comparison with human teeth , Radiat. Meas., 37 (4-5), 341-346, doi: 10.1016/S1350-4487(03)00059-3.

S. Toyoda, H. Tanizawa, E. Tieliweuhan, M. Hoshi, C. Miyazawa, and A. A. Romanyukha (2003) Electron spin resonance (ESR) dosimetry of human tooth enamel of low dose region using a numerical method with matrices, Proceedings of the 36th Midyear Topical Meeting of the Health Physics Society, 282-287.

K. Komuro, Y. Horikawa, and S. Toyoda (2002) Development of radiation-damage halos in low-quartz: cathodoluminescence measurement after He+ ion implantation, Mineralogy and Petrology, 76 (3), 261-266, doi: 10.1007/s007100200045.

S. Toyoda and T. Naruse (2002) Eolian dust from the Asian deserts to the Japanese Islands since the Last Glacial Maximum: the basis for the ESR method, 地形 (Transactions, Japanese Geomorphological Union), 23 (5), 811-820.

横山正, 梅村崇志, 島田愛子, 豊田新 (2002) 石英を用いた神津島流紋岩のＥＳＲ（電子スピン共鳴）年代測定，平成13年度深田研究助成研究報告，19-30.

豊田新 (2002)甲陽断層及び神原断層の電子スピン共鳴年代測定の試み，蒜山地質研究所報告書

チョードリ, M. E. K, 北田奈緒子, 成瀬敏郎, 矢田貝真一, 鈴木宏, 吉井克行, 豊田新 (2001) 福井県中池見盆地と兵庫県黒井盆地に見られる過去110,000年間の古環境変動, Paleoenvironmental Changes during the past 110,000 years in the Nakaikemi Basin and the Kuroi Basin, Central Japapn, M. E. K. Chowdhury, N. Kitada, T. Naruse, S. Yatagai, H. Suzuki, K. Yoshii and S. toyoda, 地学雑誌(Journal of Geography), 110 (5), 725-733, doi: 10.5026/jgeography.110.5_725.

M. E. K. Chowdhury, T. Naruse, S. Yoshikawa, and S. Toyoda (2001) Eolian dust deposition in the last glacial stage (43-12ka) in Tanigumi Moor, Gifu Prefecture, Central Japan, The Quaternary Research (第四紀研究), 40 (3), 211-218, doi: 10.4116/jaqua.40.211.

豊田新 (2001) 石英によるESR年代測定とその応用, ぶんせき, 3, 136-141.

S. Toyoda, W. J. Rink, C. Yonezawa, H. Matsue, T. Kagami (2001) In-situ production of alpha particles and alpha recoil particles in quartz applied to ESR studies of oxygen vacancies, Quatern. Sci. Rev., 20 (5-9), 1057-1061, doi: 10.1016/S0277-3791(00)00018-4.

K. Ninagawa, T. Kitahara, S. Toyoda, K. Hayashi, H. Nishido, M. Kinjo, and T. Kawana (2001) Thermoluminescence dating of the Ryukyu Limestone, Quatern. Sci. Rev., 20 (5-9), 829-833, doi:10.1016/S0277-3791(00)00058-5.

浅井貴之，豊田新，小室光世，堀川循正，磯部博志 (2000) ウラン鉱床中における石英中の格子欠陥の生成過程－イオン及び電子線照射による研究－, Adv. ESR Appl., 16, 15-23.

S. Toyoda, K. Komuro, H. Isobe (2000) Lattice defects created in quartz of uranium ores, TIARA annual report 1999, JAERI-Review, 2000-024, 172-174.

豊田新，小室光世，磯部博志 (2000) ウラン鉱床における石英中の格子欠陥の生成過程　－放射性核種の”流路”の解明は可能か？－　黎明研究報告書, 日本原子力研究所.

蜷川清隆，豊田新，西戸裕嗣，田原誠之，金城真希，河名俊男 (2000) 沖縄島の更新世琉球石灰岩の熱ルミネッセンス年代測定，月刊地球, 22 (10), 675-680.

A. Wieser, K. Mehta, S. Amira, D. Ararno, S. Bercea, A. Brik, A. Bugai, F. Callens, V. Chumak, B. Ciesielski, R. Debuyst, S. Dubovsky, O. G. Duliu, P. Fattibene, E. H. Haskell, R. B. Hayes, E. A. Ignatiev, A. Ivannikov, V. Kirillov, E. Kleschenko, N. Nakamura, M. Nather, J. Nowak, S. Onori, B. Pass, S. Pivovarov, A. Romanyukha, O. Scherbina, A. I. Shames, S. Sholom, V. Skvortsov, V. Stepanenko, D. D. Tikounov, S. Toyoda (2000) The 2nd international intercomparison on EPR tooth dosimetry, Radiat. Meas., 32 (5-6), 549-557, doi: 10.1016/S1350-4487(00)00060-3.

S. Toyoda, W. J. Rink, H. P. Schwarcz, and J. Rees-Jones (2000) Crushing effects on TL and OSL on quartz: relevance to fault dating, Radiat. Meas., 32 (5-6), 667-672, doi: 10.1016/S1350-4487(00)00088-3.

K. Ninagawa, K. Soyama, M. Ota, S. Toyoda, N. Imae, H. Kojima, P. H. Benoit, and D. W. G. Sears (2000) Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection II: New measurements for thirty type 3 ordinary chondrites, Antarctic Meteorite Res. 13, 112-120.

S. Toyoda, P. Voinchet, C. Falguères, J. M. Dolo, and M. Laurent (2000) Bleaching of ESR signals by the sunlight: a laboratory experiment for establishing the ESR dating of sediments, Appl. Radiat. Isot., 52 (5), 1357-1362, doi: 10.1016/S0969-8043(00)00095-6.

S. Toyoda and W. Hattori (2000) Formation and decay of the E1' center and of its precursor, Appl. Radiat. Isot., 52 (5), 1351-1356, doi: 10.1016/S0969-8043(00)00094-4.

豊田新 (1999) 石英を用いた第四紀試料のＥＳＲ年代測定，月刊地球号外，26, 95-102.

W. J. Rink, S. Toyoda, J. Rees-Jones, and H. P. Schwarcz (1999) Thermal activation of OSL as a geothermometer for quartz grain heating during fault movements, Radiat. Meas. 30 (1), 97-105, doi:10.1016/S1350-4487(98)00095-X.

S. Toyoda, K. Komuro, K. Sato, M. Ikeya, and H. Yoshida (1998) ESR and CL observed in quartz grains from uranium deposits: implications for uranium migration in natural hydrogeological environment, Radiochimica Acta, 82, 331-334.

Y. Ono, T. Naruse, M. Ikeya, H. Kohno, and S. Toyoda (1998) Origin and derived courses of eolian dust quartz deposited during marine isotope stage 2 in East Asia, suggested by ESR signal intensity, Global Planet. Change, 18 (3-4), 129-135, doi: 10.1016/S0921-8181(98)00012-5.

S. Toyoda, M. Ikeya and W. Hattori (1998) Oxygen vacancy in quartz created by gamma ray irradiation: its use as an ESR dosimeter, In, S. Sasaki, T. Shibata, H. Takahashi, and M. Nakazawa, eds. Radiation Detectors and Their Uses, KEK Proceedings 98-4, 277-285.

G. M. Hassan, M. Ikeya, and S. Toyoda (1998) High sensitive ESR dosimeter with lithium lactate, In, S. Sasaki, T. Shibata, H. Takahashi, and M. Nakazawa, eds. Radiation Detectors and Their Uses, KEK Proceedings 98-4, 286-293.

豊田新 (1998) 石英中の常磁性格子欠陥の熱安定性の研究によるESR年代測定の基礎の確立／ Studies on thermal stabilities of paramagnetic lattice defects in quartz: Basis for the ESR dating method, 地球化学, 32 (3), 127-137.

G. M. Hassan, M. Ikeya, and S. Toyoda (1998) Li-lactate as an ESR dosimeter, Appl. Radiat. Isot., 49 (7), 823-828, doi: 10.1016/S0969-8043(97)10010-0.

S. Toyoda and H. P. Schwarcz (1997) The hazard of the Counterfeit E1' signal in quartz to the ESR dating of fault movements, Quaternary Science Reviews (Quatern. Geochronol.), 16 (3-5), 483-486, doi:10.1016/S0277-3791(96)00088-1.

S. Toyoda and H. P. Schwarcz (1997) Couterfeit E1' signal in quartz, Radiat. Meas., 27 (1), 59-66, doi:10.1016/S1350-4487(96)00073-X.

S. Toyoda, J. W. Rink, H. P. Schwarcz, and M. Ikeya (1996) Formation of E1' precursors in quartz: applications to dosimetry and dating, Appl. Radiat. Isot., 47 (11-12), 1393-1398, doi:10.1016/S0969-8043(96)00142-X.

S. Toyoda and H. P. Schwarcz (1996) The spatial distribution of ESR signals in fault gouge revealed by abrading technique, Appl. Radiat. Isot., 47 (11-12), 1409-1413, doi: 10.1016/S0969-8043(96)00190-X.

S. Toyoda and F. Goff (1996) Quartz in post-caldera rhyolites of Valles caldera, New Mexico: ESR finger printing and discussion of ESR ages, New Mexico Geological Society Guidebook, 47th Field Conference, 303-309.

S. Toyoda, F. Goff, S. Ikeda, and M. Ikeya (1995) ESR dating of quartz phenocrysts in the El Cajete and Battleship Rock Members of Valles Rhyolite, Valles Caldera, New Mexico, J. Volcanol. Geotherm. Res., 67 (1-3), 29-40, doi: 10.1016/0377-0273(94)00093-V.

S. Toyoda, D. L. Kirschner, J. W. Rink, and H. P. Schwarcz (1995) ESR dating of quartz vein, Adv. ESR Appl., 11, 8-13.

豊田新，岡部師才 (1995) ＥＳＲ（電子スピン共鳴）による高森遺跡関連火山噴出物の年代測定(2), 東北歴史資料館資料集, 39, 「高森遺跡III」, 23-28.

豊田新 (1995) 歯のエナメルを用いたＥＳＲ（電子スピン共鳴）線量計測方法の改良, Improvement of ESR(Electron Spin Resonance) dosimetry using tooth enamel, 放射線科学, 38 (2), 41-45.

R. C. Dunnell, M. Ikeya, P. T. McCutcheon and S. Toyoda (1994) Heat treatment of Mill Creek and Dover cherts on the Malden Plain, Southwest Missouri, J. Archaeol. Sci. 21 (1), 79-89, doi:10.1006/jasc.1994.1009.

S. Toyoda and M. Ikeya (1994) Formation of oxygen vacancies in quartz and its application to dating, Quaternary Science Reviews (Quatern. Geochronol.) 13 (5-7), 607-609, doi: 10.1016/0277-3791(94)90085-X.

S. Toyoda and M. Ikeya (1994) ESR dating of quartz with stable component of impurity centers, Quaternary Science Reviews (Quatern. Geochronol.) 13 (5-7), 625-628, doi: 10.1016/0277-3791(94)90089-2.

K. Ogoh, C. Yamanaka, S. Toyoda, M. Ikeya, and E. Ito (1994) ESR studies on radiation induced defects in high pressure phase of SiO2, Nucl. Inst. Methods, B91 (1-4), 331-333, doi:10.1016/0168-583X(94)96241-3.

S. Toyoda, H. Sumitomo, M. Ikeya, and H. Ishii (1994) Separation of CO2- signal from a spectrum of irradiated tooth enamel in ESR dosimetry, In, assessment of the health and environmental impact from radiation doses due to released radionuclides, NIRS-M-102, 187-205.

C. Yamanaka, S. Toyoda and M. Ikeya (1993) ESR Applications to Meteorite samples, Proceedings of the NIPR Symposium on Antarctic Meteorites, 6, 417-422.

S. Toyoda and M. Ikeya (1993) The use of electron spin resonance (ESR) for the determination of prehistoric lithic heat treatment, Appl. Radiat. Isot. 44 (1-2), 227 231, doi: 10.1016/0969-8043(93)90224-X.

S. Toyoda, H. Kohno and M. Ikeya (1993) Distorted E'1 centers in crystalline quartz: An application to ESR dating of fault movements, Appl. Radiat. Isot. 44 (1-2), 215 220, doi: 10.1016/0969-8043(93)90222-V.

K. Ogoh, S. Toyoda, S. Ikeda, M. Ikeya and F. Goff (1993) Cooling history of the Valles caldera, New Mexico using ESR dating method, Appl. Radiat. Isot. 44 (1-2), 233 237, doi: 10.1016/0969-8043(93)90225-Y.

豊田　新 (1993) ＥＳＲ（電子スピン共鳴）による高森遺跡関連火山灰の年代測定, 高森遺跡II, 東北歴史資料館資料集, 35, 53-55.

豊田　新, 小村哲治, 池谷元伺 (1993) ＥＳＲ（電子スピン共鳴）による地球環境評価, 放射線, 20, 53-64.

S. Toyoda, M. Ikeya, J. Morikawa and T. Nagatomo (1992) Enhancement of oxygen vacancies in quartz by natural external β and γ ray dose: a possible ESR Geochronometer of Ma Ga range, Geochem. J. 26 (3), 111 115, doi:10.2343/geochemj.26.111.

M. Ikeya, H. Kohno, S. Toyoda and Y. Mizuta (1992) Spin Spin relaxation time of E' centers in neutron irradiated quartz (SiO2) and in fault gouge, Jpn. J. Appl. Phys. 31, L1539 1541.

池田すみ子, 豊田　新, 池谷元伺 (1992) ＥＳＲ年代測定法 －地球生成年代から現代まで－, Isotope News 7月号, 2-5.

S. Toyoda (1992) Production and decay characteristics of paramagnetic defects in quartz: Applications to ESR dating, Ph. D. dessertation, Osaka University, Toyonaka, Osaka, Japan, 106p.

豊田　新，池谷元伺 (1992) 受託研究「ESR年代測定法の第三系火成岩への適用の可否の検討」報告書

S. Toyoda and M. Ikeya (1991) ESR dating of quartz and plagioclase from volcanic ashes using E'1, Al and Ti centers, Nucl. Tracks. Radiat. Meas., 18, 179 184.

S. Toyoda, H. Kohno and M. Ikeya (1991) E'1 centers in distorted sites in quartz: ESR dating of geological fault, Adv. ESR Appl., 7, 2-4.

M. Ikeya and S. Toyoda (1991) Thermal effect in metamorphic rock around an intrusion zone with ESR studies, Appl. Magn. Reson. 2, 69 81, doi:10.1007/BF03166268.

S. Toyoda and M. Ikeya (1991) Thermal stabilities of paramagnetic defect and impurity centers in quartz: Basis for ESR dating of thermal history, Geochem. J. 25 (6), 437-445, doi: 10.2343/geochemj.25.437.

S. Toyoda and M. Ikeya (1990) Annual dose rate from atmospheric radon activities in the Cave, Kawachi no kaza'ana, Shiga Prefecture, Japan, J. speleol. Soc. Jpn. 15, 56-69.

豊田　新, 南林秀樹, 池谷元伺 (1990) 貫入岩体付近の変成岩のＥＳＲによる熱履歴評価, 月刊地球, 12 (1), 20-25.

M. Ikeya, S. Toyoda and H. Minamibayashi (1990) ESR studies of thermal effect in metamorphic rock around an intrusion zone, J. ESR Appl. Metrol., 6, 2 10.

S. Toyoda and M. Ikeya (1990) Annual dose rate from atmospheric radon activities, Anthropos, 12, 36 49.

石井博，豊田　新（1989）第2回　ESR線量測定と応用に関する国際シンポジウム報告，Isotope News, 942,102-103.

S. Toyoda and M. Ikeya (1989) ESR as a paleothermometer of volcanic materials, Appl. Rad. Isot. 40 (10-12), 1171-1175.

S. Toyoda and M. Ozima (1988) Investigation of excess 4He and 40Ar in beryl by laser extraction technique, Earth Planet. Sci. Lett., 90 (1), 69 76, doi: 10.1016/0012-821X(88)90112-4.

著書
S. Toyoda (2020) Determination by ESR of the temperature of prehistoric lithic heat treatment, Chapter 4, pp. 4-1 to 13, in, Ed. A. K. Shukla, Spectroscopic techniques for archaeological and cultural heritage research, IOP Publishing, Bristol, UK.

S. Toyoda (2019) Recent Issues in X-Band ESR Tooth Enamel Dosimetry, In, Ed. A. K. Shukla, Electron Spin Resonance Spectroscopy in Medicine, pp.135-151, Springer Singapore, doi: 10.1007/978-981-13-2230-3.

S. Toyoda (2014) （分担執筆）Paramagnetic lattice defects in natural crystalline quartz, In, A. K. Srivastava ed., Oxide nanostructures: growth, microstructures, and properties, Pan Stanford Publishing, Singapore, pp.345-369.

J. S. Tawale, H. Nishido, S. Toyoda, M. Deepa, N. Bahadur, M. Maniraj, S.R. Barman, B.R. Chakraborty and A.K. Srivastava (2012) （分担執筆）Revelation on temperature-dependent cathodoluminescence by employing nanostructural pathway in Fe-incorporated ZnO, In, Q. Zhang, W. I. Milne, J. Zou eds. Advances in Nanodevices and Nanofabrication, p.231-250, Pan Stanford Publishing, DOI: 10.1201/b14791-17.

豊田新（2010）（分担執筆）ＥＳＲ年代測定，デジタルブック最新第四紀学，第四紀学会

豊田新（2007）（分担執筆）歯も石も化石も語る，「オンリーワンを求めて」滝沢・佐藤編, 近代科学社, 218-224.

データベース
豊田新 (1999) ESR年代測定　日本原子力研究所データベース