C. Pitakchaianan, K. Kosinarkaranun, P. Kumsut, R. Hazama, A. Rittirong, K. Skakibara, K. Kashiwaya, Y. Ogata, Y. Kato, N. Akata, W. Sudprasert; Tritium baseline concentration and the origin of water and solute in precipitation elucidated from monthly data in Osaka, Japan. . Environ. Radioact., 292, 107878 (2026) https://doi.org/10.1016/j.jenvrad.2025.107878
Y. Tamakuma, H. Hashimoto. M. Taoka, R. Yamada, K. Iwaoka, Y. Omori, M. Hosoda, S. Tokonami; Monte Carlo simulation to optimize measurement geometry of continuous air monitor with Si semiconductor detector. Radiat. Phys. Chem., 241, 113507 (2026) https://doi.org/10.1016/j.radphyschem.2025.113507
Y. Narazaki, A. Sakoda, Y. Ishikawa, J. Yamanaka, T. Tamari, N. Akata, N. Momoshima: Spatiotemporal variations and environmental behavior of activity concentrations of natural and artificial radionuclides in soils of Fukuoka, Japan (1980–2019). J. Environ. Radioact., 292, 107828 (2026) https://doi.org/10.1016/j.jenvrad.2025.107828
桑田遥, Khemruthai Kheamsiri, Stephenson James William, 北山結彩, 山田椋平, 玉利俊哉, 天野洋典, 遠藤雅宗, 鷹崎和義, 赤田尚史: 海藻試料を用いた極低濃度レベル有機結合型トリチウム分析. KEK Proceedings 2025-2, 145-150 (2025) 論文PDF(無料ダウンロード可) ※抜粋版
N. Akata, T. Saze, H. Kuwata, C. Iwata, M. Nakada, S. Kurita, H. Hayashi, H. Miyake, M. Tanaka: Comprehensive assessment of tritium to the environment discharged by deuterium plasma experiment using Large Helical Device, Japan. J. Fusion Energy, 44:60 (2025) https://doi.org/10.1007/s10894-025-00532-0
Y. Tamakuma, D. Anderson, C. Kranrod, Y. Taira, Y. Oda, Y. Omori, H. Tazoe, T. Sanada, K. Ogura, M. Furukawa, Y. Shiroma, H. Kudo, M. Shimizu, R. Yamada, N. Akata, M. Hosoda, S. Tokonami: Indoor and outdoor exposure to atmospheric radionuclides in areas affected by the Fukushima nuclear accident. Sci. Total Environ., 1008, 181027 (2025) https://doi.org/10.1016/j.scitotenv.2025.181027
赤田尚史, 桑田遥: 有機結合型トリチウムの分析法. 環境管理, 54, 4–7 (2025) 論文PDF(無料ダウンロード可)
北山結彩, 桑田遥, Khemruthai Kheamsiri, 福田ほのか, 田中和貴, 山田椋平, 栗田直幸, 滝沢宜之, 斉藤秀樹, 遠藤雅宗, 天野洋典, 鷹﨑和義, 赤田尚史: 福島県浜通り地域におけるALPS処理水海洋放出前後の月間降水中トリチウム濃度. 東北の雪と生活, 40, 21-25 (2025) 論文PDF(無料ダウンロード可)
C. Kranrod, W. Poltabtim, T. Thumviji, S. Sriburee, S. Somboon, K. Ruktinnakorn, R. Yamada, M. Jabbade, S. Tokonami: Short-term Variations of Indoor and Outdoor Airborne Particulate Matter (PM2.5 and PM10) and Radon Concentrations during the Highest Burning Season in Chiang Mai, Thailand. Radiat. Environ. Med., 14, 75–82 (2025). https://doi.org/10.51083/radiatenvironmed.14.2_75
M. Janic, M. Hosoda, S. Tokonami, Y. Omori, N. Akata: Evaluating Soil Temperature Variations for Enhanced Radon Monitoring in Volcanic Regions. Atmosphere, 16, 460 (2025) https://doi.org/10.3390/atmos16040460
M. Orita, K. Tanaka, I. Amir, H. Matsunaga, Y. Kashiwazaki, X. Xiao, N. Akata, T. Miura, I. Kashiwakura, N. Ito, T. Abe, T. Tamaki, N. Takamura, S. Tokonami, M. Tsubokura: Essential health risk communication for recovery after lifting evacuation orders following the Fukushima Daiichi nuclear power plant accident. Sci. Rep., 11071 (2025) https://doi.org/10.1038/s41598-025-94541-w
H. Kuwata, K. Kheamsiri, R. Yamada, T. Tamari, H. Kakiuchi, M. Tanaka, N. Akata: Optimization and validation of combustion-based analysis of organically bound tritium in pine needles. J. Radioanal. Nucl. Chem., 334, 3185–3192 (2025) https://doi.org/10.1007/s10967-025-10063-9
K. Kheamsiri, D. Anderson, H. Tazoe, K. Okada, N. Otashiro, H. Kuwata, H. Kakiuchi, M. Hosoda, T. Kovács, S. Tokonami, N. Akata: Elevated levels of tritium in surface water collected in the immediate aftermath of the Fukushima accident. Env. Pollut., 372, 126040 (2025) https://doi.org/10.1016/j.envpol.2025.126040
D. Anderson, Y. Oda, Y. Taira, Y. Omori, H. Tazoe, N. Akata, C.Kranrod, R. Yamada, H. Kuwata, Y. Tamakuma, H. Kudo, M. Osanai, N. Nishimura, Y. Yasuoka, T. Sanada, M. Hosoda, S. Tokonami: Fukushima's tap water and groundwater a decade after the nuclear accident with Radiocesium, Tritium and Radon. Env. Sci. Technol., 59, 4906–4914 (2025) https://doi.org/10.1021/acs.est.4c14601
Y. Narazaki. A. Sakoda, N. Akata, H. Itoh, N. Momoshima: Measurement and analysis of long-term variation of atmospheric 7Be activity concentrations in Dazaifu (western Japan). J. Environ Radioact., 284, 107612 (2025) https://doi.org/10.1016/j.jenvrad.2024.107612
S. Musikawan, W. Poltabtim, K. Kheamsiri, C. Kranrod, T. Pluemjit, K. Aramrun, Y. Omori, H. Tazoe, M. Hosoda, N. Akata, S. Tokonami: Natural gamma dose rate and radioactivity concentrations at a former tin mining area in Kanchanaburi, Thailand. J. Radioanal. Nucl. Chem., (2025) https://doi.org/10.1007/s10967-025-10038-w
V. Susanto, R. Pradan, E.D. Nugraha, P. Sumintadireja, O.B. Modibo, I. Rosianna, N. Rahajeng, H. Ahmad, R. Kurniawan, L. Rixson, A. Yuningsih, Y. D. Siregar, A. Saepuloh, W. Wahyudi, H. Tazoe, N. Akata, S. Tokonami: A Bioassay Analysis of Uranium and Lead in Urine Samples from a High Natural Background Radiation Area in Indonesia. environments, 12, 51 (2025) https://doi.org/10.3390/environments12020051
H. Tazoe, Y. Amano, Y. Ishida, M. Yamada, N. Akata: Optimization of pretreatment protocol for strontium-90 analysis in marine fish bone samples. Radiat. Prot. Dosim., 200, 1861-1866 (2024) https://doi.org/10.1093/rpd/ncae155
M. Hegedűs, H. Kuwata, K. Kheamsiri, M. Novák, R. Yamada, N. Akata, T. Kovács: Tritium determination in natural water samples in Fukushima from 2022 to 2023 using an ultra-low level tritium counting system. Radiat. Prot. Dosim., 200, 1845-1849 (2024) https://doi.org/10.1093/rpd/ncae166
R. Suzuki, K. Okuyama, K. Chiba, T. Hashimoto, N. Katsumata, A. Ukitsu, K. Kheamsiri, R. Yamada, N. Akata: Behavior of radioactive cesium concentration for 13 years after FDNPP accident at Koriyama campus of Nihon University, Fukushima, Japan. Radiat. Prot. Dosim., 200, 1835-1839 (2024) https://doi.org/10.1093/rpd/ncae082
H. Hasegawa, N. Akata, K. Okuyama, S. Ochiai, H. Kakiuchi, S. Ueda: Study of seasonal variation of accident-derived atmospheric radiocesium in Koriyama City, Fukushima Prefecture, Japan during 2011-2014. Radiat. Prot. Dosim., 200, 1829-1834 (2024) https://doi.org/10.1093/rpd/ncae141
H. Kuwata, R. Yamada, K. Kheamsiri, H Kakiuchi, T. Tamari, N. Shima, N. Akata: Evaluation of combustion system for organically bound tritium analysis using dried fish samples. Radiat. Prot. Dosim., 200, 1807-1812 (2024) https://doi.org/10.1093/rpd/ncae120
M. Tanaka, S. Kurita, N. Akata: Impacts of the large fusion test facility on tritium in environmental water and natural radiation levels. Radiat. Prot. Dosim., 200, 1802-1806 (2024) https://doi.org/10.1093/rpd/ncae123
R. Yamada, H. Kuwata, K. Kheamsiri, K. Ohno, Y. Kitayama, Y. Yoshinaka, S. Yoshinaga, N. Kurita, N. Akata: Characteristics of tritium, stable isotopes and chemical components in monthly precipitation at Hiroshima, Japan. Radiat. Prot. Dosim., 200, 1797-1801 (2024) https://doi.org/10.1093/rpd/ncae024
N. Akata, K. Ohno, H. Kuwata, K. Kheamsiri, Y. Yoshinaka, R. Yamada, Y. Kitayama, S. Aizawa, S. Nakasone, A. Ishimine, M. Tanaka, Y. Shiroma, S. Tokonami, M. Furukawa: Tritium concentration in monthly precipitation in Okinawa and Kagoshima, southern Japan. Radiat. Prot. Dosim., 200, 1792-1796 (2024) https://doi.org/10.1093/rpd/ncae021
K. Kheamsiri, O.B. Modibo, B.S. Hadi, H. Kuwata, R. Yamada, C. Kranrod, N. Akata: Atmospheric concentrations of 7e and 210Pb in weekly aerosols at Hirosaki, a heavy snowfall area in Japan. Radiat. Prot. Dosim., 200, 1782-1786 (2024) https://doi.org/10.1093/rpd/ncae156
A. Takeda, Y. Unno, M. JB. Swallow, Y. Yagasaki, T. Yasutaka, N. Akata: Development of evaluation method for radiocesium availability in soil by biomimetic approach. Radiat. Prot. Dosim., 200, 1767-1771 (2024) https://doi.org/10.1093/rpd/ncae129
M. Kiso, M. Taoka, A. Sampei, H. Hashimoto, Y. Abe, Y. Oda, Y. Omori, R. Yamada, M. Hosoda, C. Kranrod, T. Ishikawa, S. Tokonami: Effect of sampling face velocity on the ultrafine particle surface collection efficiency of a cellulose membrane filter and a cellulose-glass fiber filter for environmental airborne radioactivity monitoring. Radiat. Prot. Dosim., 200, 1671-1675 (2024) https://doi.org/10.1093/rpd/ncae191
F.K. Sime, D.S. Gondji, I. Rosianna, E.D. Nugraha, O.B. Modibo, C. Kranrod, Y. Omori, N. Akata, M. Hoisoda, Saȉdou, S. Toko0nami: Ecological and health risks from trace elements contamination in soils at the Rutile Bearing area of Akonolinga, Cameroon. appl sci, 14, 10538 (2024) https://doi.org/10.3390/app142210538
S. Nakasone, A. Ishimine, Y. Tamakuma, M. Hosoda, N. Akata, T. Sanada, M. Tanaka, S. Yokoyama, M. Sakama, A. Tanahara, M. Furukawa, S. Tokonami, Y. Yasuoka, Y. Shiroma: Interlaboratory comparison in Japan for Radon determination in water. Jpn. J. Health Phys., 59, 131-134 (2024) https://doi.org/10.5453/jhps.59.131
N. Akata, K. Okada, N. Otashiro, H. Kuwata, K. Kheamsiri, K. Ohno, Y. Yoshinaka, R. Yamada, M. Tanaka: Performance test of improved commercially available tritium enrichment system: Toward rapid and high efficiency enrichment. Radiat. Environ. Med., 13, 60-64. (2024) https://doi.org/10.51083/radiatenvironmed.13.2_60
N. Akata, D. Anderson, H. Kakiuchi, R. Yamada, H. Hasegawa, S. Ueda: Tissue-free water tritium and non-exchangeable organically bound tritium concentrations in fish near coastline during and after operation of Japan's first nuclear fuel reprocessing facility. Sci. Total Environ., 947, 174404 (2024) https://doi.org/10.1016/j.scitotenv.2024.174404
Y. Narazaki, A. Sakoda, N. Akata, H. Itoh, N. Momoshima: Variation analysis of atmospheric 7Be activity concentrations with respect to precipitation. J. Environ. Radioact., 277, 107432 (2024) https://doi.org/10.1016/j.jenvrad.2024.107432
C. Kranrod, T. Thumvijit, R. Yamada, W. Poltabtim, M. Kiso, S. Sriburee, S. Somboon, K. Ruktinnakorn, S. Tokonami: Changes in Particulate Matter (PM2.5 and PM10) Concentrations and Ambient Dose Equivalent Rates at Different Altitudes in Chiang Mai, Thailand. Radiat. Environ. Med., 13, 28-34. (2024)
https://doi.org/10.51083/radiatenvironmed.13.1_28
植田真司, 長谷川英尚, 柿内秀樹, 大塚良仁, 阿部康一, 赤田尚史, 落合伸也: 六ヶ所再処理工場のアクティブ試験時における環境放射能-放出された放射性物質の環境への影響について-. Radioisotopes, 73, 81-99. (2024) https://doi.org/10.3769/radioisotopes.73.81
R. Yamada, H. Hasegawa, N. Akata, H. Kakiuchi, S. Ochiai, H. Kuwata, K. Kheamsiri, S. Tokonami, S. Ueda : Temporal variation of tritium concentration in monthly precipitation collected at a Difficult-to-Return Zone in Namie Town, Fukushima Prefecture, Japan. Environ Sci Pollut Res. 31, 7818-7827 (2024). https://doi.org/10.1007/s11356-023-31652-9
S. Hirao, H. Kakiuchi, N. Akata, T. Tamari, S. Sugihara, N. Shima, M. Tanaka: Assessing the variability of tissue-free water tritium and non-exchangeable organically bound tritium in pine needles in Fukushima using atmospheric tritiated water vapor. Sci. Total Environ. 907, 168173 (2024) https://doi.org/10.1016/j.scitotenv.2023.168173
I. Rosianna, E. D. Nuguraha, H. Tazoe, H. Syaeful, A.G. Muhammad, I.G. Sukadana, F.D. Indrastomo, Ngadenin, F. Pratiwi, A. Sumaryanto, Sucipta, H.A. Pratama, D. Mustika, L. Nirwani, Nurokhim, Y. Omorti, M. Hosoda, N. Akata, S. Tokonami: Uranium isotope characterization in volcanic deposits in a high natural background radiation area, mamuju, Indonesia. geosciences, 13, 388 (2023) https://doi.org/10.3390/geosciences13120388
M. Hosoda, Y. Omori, H. Hashimoto, M. Matsumoto, Y. Yasuoka, T. Sanada, Y. Oda, M. Kiso, A. Sampei, C. Kranrod, H. Tazoe, N. Akata, Y. Taira, Y. Tamakuma, R. Yamada, H. Kudo, M. Shimizu, S. Tokonami: Calibration experiments for radon in drinking water measurements using portable-type electrostatic-collection radon monitors. Radiat. Protec. Dosim. 199, 2203-2206 (2023)
K. Kheamsiri, N. Akata, H. Kuwata, M. Tanaka, M. Hosoda, M. Sasaki, Y. Shiroma, S. Tokonami, R. Yamada, C. Kranrod, K. Iwaoka, T. Kovάcs: Tritium concentration in bottled drinking water and internal dose assessment. J. Radioanal. Nucl. Chem. (2023) https://doi.org/10.1007/s10967-023-09054-5
M.O. Bobbo, G. Yang, Saïdou, H. Tazoe, N. Akata, C. Kranrod, M. Hosoda, S. Tokonami: Environmental radioactivity measurements in soil using inductively coupled plasma mass spectrometry and gamma-ray spectrometry in various areas in Cameroon. J. Radioanal. Nucl. Chem. (2023)
N. Akata, K. Okada, H. Kuwata, K. Kheamsiri, M. Hosoda, H. Tazoe, R. Yasuhara, S. Sugihara, R. Yamada, M. Tanaka: Tritium Concentration in Natural Spring Water Collected at Hirosaki, Japan. Plasma Fusion Res., 18, 2405030. (2023) DOI: 10.1585/pfr.18.2405030
K. Horiuchi, S. Kato, K. Ohtani, N. Kurita, S. Tsutaki, F. Nakazawa, H. Motoyama, K. Kawamura, H. Tazoe, N. Akata, T. Yamagata, H. Matsuzaki: Spatial variations of 10Be in surface snow along the inland traverse route of Japanese Antarctic Research Expeditions. Nucl. Instrum. Methods Phys. Res. B, 533, 61-65. (2022) https://doi.org/10.1016/j.nimb.2022.10.018
H. Hasegawa, H. Kakiuchi, S. Ochiai, N. Akata, S. Ueda, S. Tokonami: Temporal variation of post-accident 129I in atmospheric particulate matter collected from an evacuated area of Fukushima Prefecture, Japan. Radiat. Prot. Dosim., 198, 1143-1149. (2022)
M. Tanaka, C. Iwata, M. Nakada, A. Kato, N. Akata: Levels of atmospheric tritium in the site of fusion test facility. Radiat. Prot. Dosim., 198, 1084-1089. (2022)
H. Tazoe, R. Tachizaki, Y. Tomisaka, H. Kuwata, N. Akata: Speciation of cesium isotopes in river water: A case study in the Ukedo river. Radiat. Prot. Dosim., 198, 1077-1083. (2022)
H. Kuwata, H. Tazoe, C. Kranrod, K. Fujiwara, M. Terashima, M. Matsueda, S. Hirao, N. Akata: Performance evaluation of commercial scintillation cocktails for low-lever tritium counting by high-capacity liquid scintillation counter. Radiat. Prot. Dosim., 198, 1014-1018. (2022)
N. Akata, C. Iwata, M. Nakada, A. Kato, K. Okada, H. Kuwata, S. Nakasone, M. Tanaka: Tritium concentration in monthly precipitation near the fusion test facility in Japan before and after the deuterium plasma experiment. Radiat. Prot. Dosim., 198, 976-984. (2022)
M. Hosoda, R. Yamada, H. Kobayashi, Y. Tamakuma, E.D. Nugraha, H. Hashimoto, R. Negami, C. Kranrod, Y. Omori, H. Tazoe, N. Akata, S. Tokonami: Influence of sampling flow rate on thoron exhalation rate measurements by the circulation method. Radiat. Prot. Dosim., 198, 904-908. (2022)
I. Rosianna, H. Syaeful, S. Putra, E. Rakhma, I.G. Sukadana, E.D. Nugraha, H. Tazoe, N. Akata: A novel uranium measurement using extraction chromatography separation technique in radioactive minerals exploration. AIP Conf. Proc., 2638, 030002. (2022)
Y. Narazaki, A. Sakoda, N. Akata, H. Itoh, N. Momoshima: Analysis of Factors Contributing to the Increase in 7Be Activity Concentrations in the Atmosphere.Int. J. Environ. Res. Public Health, 19, 10128. (2022)
S. Hirao, H. Kakiuchi, N. Akata, T. Tamari, S. Sugihara, N. Shima, S. Yokoyama, M. Tanaka: Characterization of atmospheric tritiated water concentration in the vicinity of the fukushima daiichi nuclear power plant. J. Radioanal. Nucl. Chem., 331, 3077-3083. (2022)
H. Kuwata, N. Akata, K. Okada, M. Tanaka, H. Tazoe, N. Kurita, N. Otashiro, R. Negami, T. Suzuki, Y. Tamakuma, Y. Shiroma, M. Hosoda: Monthly Precipitation Collected at Hirosaki, Japan: Its Tritium Concentration and Chemical and Stable Isotope Compositions. Atmosphere, 13, 848. (2022)
M. Furukawa, Y. Omori, N. Masuda, Y. Tamakuma, T. Suzuki, M. Obata, R. Shingaki, S. Nakasone, A. Ishimine, K. Nakamura, Y. Shiroma, M. Hosoda, N. Akata, S. Tokonami:.High Indoor Radon Concentration Observed in Yomitan-son, Okinawa Prefecture, Southwestern Part of Japan. Radiat. Environ. Med., 11, 16-20. (2022)
H. Tazoe, Y. Tomisaka, N. Akata, B. Russell, P. Ivanov, M. Hosoda, S. Tokonami: Rapid Chemical Separation Protocol for Optimized 90Sr Determination by ICP-MS in Water Samples for Radiological Incident. Radiat. Environ. Med., 11, 7-15. (2022)
R. Yamada, M. Hosoda, T. Tabe, Y. Tamakuma, T. Suzuki, K. Kelleher, T. Tsujiguchi, Y. Tateyama, E.D. Nugraha, A. Okano, Y. Narumi, C. Kranrod, H. Tazoe, K. Iwaoka, Y. Yasuoka, N. Akata, T. Sanada, S. Tokonami: 222Rn and 226Ra Concentrations in Spring Water and Their Dose Assessment Due to Ingestion Intake. Int. J. Environ. Res. Public Health, 19, 1758. (2022)
M. Kajino, A. Watanabe, M. Ishizuka, K. Kita, Y. Zaizen, T. Kinase, R. Hirai, K. Konnai, A. Saya, K. Iwaoka, Y. Shiroma, H. Hasegawa, N. Akata, M. Hosoda, S. Tokonami, Y. Igarashi: Reassessment of the radiocesium resuspension flux from contaminated ground surfaces in eastern Japan. Atmos. Chem. Phys., 22, 783-803. (2022)
E.D. Nugraha, J. Mellawati, C. Kranrod, Makhsun, H. Tazoe, H. Ahmad, M. Hosoda, N. Akata, S. Tokonami: Heavy Metal Assessments of Soil Samples from a High Natural Background Radiation Area, Indonesia. Toxics, 10, 39. (2022)
仲宗根峻也, 中村夏織, 石津裕二, 城間吉貴, 田中将裕, 赤田尚史, 伊志嶺聡伸, 石川義朗, 柿内秀樹, 真田哲也, 古川雅英: 沖縄島における降水中のトリチウム濃度と水素・酸素安定同位体比及び主要イオン濃度との関係. Jpn. J. Health Phys., 56, 265-279. (2021)
R. Yamada, Y. Tamakuma, T. Suzuki, S. Nakasone, Y. Shiroma, M. Furukawa, H. Hashimoto, M. Hosoda, N. Akata, S. Tokonami: A Preliminary Study of Radon Equilibrium Factor at a Tourist Cave in Okinawa, Japan. Atmosphere, 12, 1648. (2021)
E.D. Nugraha, M. Hosoda, Y. Tamakuma, C. Kranrod, J. Mellawati, N. Akata, S. Tokonami: A unique high natural background radiation area in Indonesia: A brief review from the viewpoint of dose assessments. J. Radioanal. Nucl. Chem., 330, 1437-1444. (2021)
E.D. Nugraha, M. Hosoda, J. Mellawati, Y. Tamakuma, A. Ikram, M. Syaifudin, R. Yamada, N. Akata, M. Sasaki, M. Furukawa, S. Yoshinaga, M. Yamaguchi, T. Miura, I. Kashiwakura, S. Tokonami: Comprehensive exposure assessments from the viewpoint of health in a unique high natural background radiation area, Mamuju, Indonesia. Sci. Rep., 11, 14578. (2021)
N. Akata, H. Kakiuchi, M. Tanaka, Y. Ishikawa, N. Kurita, M. Furukawa, M. Hegedűs, T. Kovács, M. Gusyev, T. Sanada: Isotope and chemical composition of monthly precipitation collected at Sapporo, northern part of Japan during 2015-2019. Fusion Eng. Des., 168, 112434. (2021)
中田実希, 田中将裕, 赤田尚史, 加藤明己, 岩田智恵, 林浩: 核融合科学研究所における松葉及び土壌中の環境放射性物質のモニタリング. Jpn. J. Health Phys., 56, 66-74. (2021)
S. Tokonami, T. Miura, N. Akata, H. Tazoe, M. Hosoda, C. Kranrod, H. Kudo, K. Ogura, Y. Fujishima, Y. Tamakuma, M. Shimizu, K. Kikuchi, I. Kashiwakura: Support activities in Namie Town, Fukushima undertaken by Hirosaki University. Ann. ICRP, 50, 102-108. (2021)
O.B. Modibo, S. Tokonami, M. Hosoda, Y. Tamakuma, H. Jun, M. Hegedüs, E.D. Nugraha, Saïdou, H. Tazoe, N. Akata, Y. Kanai, F. Yanagisawa, R. Zhang: 210Pb and Major Ion Concentrations in Aerosols Collected in Qingdao, a Seaside Area of China. Radiat. Environ. Med., 10, 18-25. (2021)
O.B. Modibo, Y. Tamakuma, T. Suzuki, R. Yamada, W. Zhuo, C. Kranrod, K. Iwaoka, N. Akata, M. Hosoda, S. Tokonami: Long-term measurements of radon and thoron exhalation rates from the ground using the vertical distributions of their activity concentrations. Int. J. Environ. Res. Public Health, 18, 1489. (2021)
S. Nakasone, S. Yokoyama, T. Takahashi, M. Ota, H. Kakiuchi, S. Sugihara, S. Hirao, N. Momoshima, T. Tamari, N. Shima, M.A. Andoh, S. Fukutani, K. Nakamura, A. Ishimine, M. Furukawa, M. Tanaka, N. Akata: Simple Pretreatment Method for Tritium Measurement in Environmental Water Samples using a Liquid Scintillation Counter. Plasma Fusion Res., 16, 2405035. (2021)
S. Nakasone, A. Ishimine, S. Shiroma, N. Masuda, K. Nakamura, Y. Shiroma, S. Ooka, M. Tanaka, A. Kato, M. Hosoda, N. Akata, Y. Yasuoka, M. Furukawa: Temporal and Spatial Variation of Radon Concentrations in Environmental Water from Okinawa Island, Southwestern Part of Japan. Int. J. Environ. Res. Public Health, 18, 998. (2021)
K. Ogura, M. Hosoda, Y. Tamakuma, T. Suzuki, R. Yamada, R. Negami, T. Tsujiguchi, M. Yamaguchi, Y. Shiroma, K. Iwaoka, N. Akata, M. Shimizu, I. Kashiwakura, S. Tokonami: Discriminative measurement of absorbed dose rates in air from natural and artificial radionuclides in Namie Town, Fukushima Prefecture. Int. J. Environ. Res. Public Health, 18, 978. (2021)
N. Akata, C. Iwata, M. Nakada, M. Tanaka, H. Kakiuchi, T. Kovács, F. Yanagisawa, Y. Kanai: Characterization of atmospheric 210Pb concentration and its relation to major ion species at Tsukuba, Japan. J. Radioanal. Nucl. Chem., 327, 755-760. (2021)
M. Hosoda, E.D. Nugraha, N. Akata, R. Yamada, Y. Tamakuma, M. Sasaki, K. Kelleher, S. Yoshinaga, T. Suzuki, C.P. Rattanapongs, M. Furukawa, M. Yamaguchi, K. Iwaoka, T. Sanada, T. Miura, Kusdiana, D. Iskandar, E. Pudjadi, I. Kashiwakura, S. Tokonami: A unique high natural background radiation area – Dose assessment and perspectives. Sci. Total Environ., 750, 142346. (2021)
I. Rosianna, E.D. Nugraha, H. Syaeful, S. Putra, M. Hosoda, N. Akata, S. Tokonami: Natural radioactivity of laterite and volcanic rock sample for radioactive mineral exploration in Mamuju, Indonesia. Geosciences, 10, 376. (2020)
N. Akata, C. Iwata, A. Kato, M. Tanaka, H. Tazoe, N. Shima, K. Ichiyanagi, M. Hegedűs, G. Bátor, T. Kovács, H. Kakiuchi: Low-volume Electrolytic Enrichment for Tritium Measurement Using Improved Solid Polymer Electrolyte System at NIFS and Its Application. Radiat. Environ. Med., 9, 93-97. (2020)
E.D. Nugraha, M. Hosoda, Kusdiana, I.D. Winarni, A. Prihantoro, T. Suzuki, Y. Tamakuma, N. Akata, S. Tokonami,: Dose assessment of radium-226 in drinking water from mamuju, a high background radiation area of Indonesia. Radiat. Environ. Med., 9, 79-83. (2020)
M. Hegedűs, T. Ploykrathok, Y. Shiroma, K. Iwaoka, R. Yamada, T. Tsujiguchi, M. Yamaguchi, T. Suzuki, K. Ogura, Y. Tamakuma, H. Tazoe, N. Akata, M. Hosoda, I. Kashiwakura, S. Tokonami: Environmental Monitoring of 134Cs and 137Cs Levels in Namie Town in 2018 and 2019. Radiat. Environ. Med., 9, 70-78. (2020)
M. Hegedűs, H. Tazoe, G. Yang, Y. Tamakuma, M. Hosoda, N. Akata, S. Tokonami: Caesium Retention Characteristics of Knifc–Pan Resin from River Water. Radiat. Prot. Dosim., 190, 320-323. (2020)
A. Kinahan, M. Hosoda, K. Kelleher, T. Tsujiguchi, N. Akata, S. Tokonami, L. Currivan, L.L. Vintró: Assessment of radiation dose from the consumption of bottled drinking water in Japan. Int. J. Environ. Res. Public Health, 17, 4992. (2020)
M. Tanaka, N. Suzuki, H. Kato, C. Iwata, N. Akata, H. Hayashi, H. Miyake: Monitoring and recovery of tritium in a fusion test facility. Fusion Sci. Technol., 76, 475-480. (2020)
S. Nakasone, S. Yokoyama, T. Takahashi, M. Ota, H. Kakiuchi, S. Sugihara, S. Hirao, N. Momoshima, T. Tamari, N. Shima, M.A. Andoh, S. Fukutani, A. Ishimine, M. Furukawa, M. Tanaka, N. Akata: Preliminary investigation of pretreatment methods for liquid scintillation measurements of environmental water samples using ion exchange resins. Plasma Fusion Res., 15, 2405027. (2020)
G.S. Bineng, Saïdou, M. Hosoda, Y.F.T. Siaka, N. Akata, S.F. Talla, P.E. Abiama, S. Tokonami: External radiation exposure to the public using car-borne survey method in the uranium and thorium bearing region of Lolodorf, Cameroon. Radiati. Environ. Med., 9, 13-20. (2020)
M. Hegedűs, Y. Shiroma, K. Iwaoka, M. Hosoda, T. Suzuki, Y. Tamakuma, R. Yamada, T. Tsujiguchi, M. Yamaguchi, K. Ogura, H. Tazoe, N. Akata, I. Kashiwakura, S. Tokonami: Cesium concentrations in various environmental media at Namie, Fukushima. J. Radioanal. Nucl. Chem., 323, 197-204. (2020)
M. Osanai, K. Kudo, M. Hosoda, H. Tazoe, N. Akata, M. Kitajima, M. Tsushima, N. Komiya, M. Kudo, T. Tsujiguchi, M. Takagi, Y. Hosokawa, Y. Saito: The impact on the eye lens of radiation emitted by natural radionuclides (lead-210) present in radiation protection glasses. Radiat. Prot. Dosim., 188, 13-21. (2020)
N. Akata, M. Tanaka, C. Iwata, A. Kato, M. Nakada, T. Kovács, H. Kakiuchi: Isotope composition and chemical species of monthly precipitation collected at the site of a fusion test facility in Japan. Int. J. Environ. Res. Public Health, 16, 3883. (2019)
Y. Shiroma, M. Hosoda, K. Iwaoka, M. Hegedűs, H. Kudo, T. Tsujiguchi, M. Yamaguchi, N. Akata, I. Kashiwakura, S. Tokonami: Changes of absorbed dose rate in air by car-borne survey in Namie town, Fukushima prefecture after the Fukushima Daiichi nuclear power plant accident. Radiat. Prot. Dosim., 184, 527-530. (2019)
M. Hosoda, W. Hozumi, N. Akata, A. Endo, K. Kelleher, K. Yamanouchi, Y. Imajo, T. Fukuhara, Y. Shiroma, K. Iwaoka, S. Tokonami: Evaluations of inventory and activity concentration of radiocesium in soil at a residential house 3 years after the Fukushima nuclear accident. Radiat. Prot. Dosim., 184, 518-522. (2019)
Saïdou, S. Tokonami, M. Hosoda, N.N.J. Emmanuel II, N. Akata, T.S.Y. Flore, O.B. Modibo, B.G. Samuel, T.S.S. Didier: Natural radiation exposure to the public in mining and ore bearing regions of Cameroon. Radiat. Prot. Dosim., 184, 391-396. (2019)
K. Abe, H. Hasegawa, N. Akata, H. Kakiuchi, J.H. Chiang, H. Suwa, S. Hisamatsu: A simulation study of deposition parameters for 129I discharged from the Rokkasho reprocessing plant. Radiat. Prot. Dosim., 184, 376-379. (2019)
N. Akata, H. Hasegawa, S. Sugihara, M. Tanaka, M. Furukawa, N. Kurita, T. Kovács, Y. Shiroma, H. Kakiuchi: Tritium, hydrogen and oxygen isotope compositions in monthly precipitation samples collected at Toki, Japan. Radiat. Prot. Dosim., 184, 338-341. (2019)
S. Nakasone, A. Ishimine, Y. Ishizu, Y. Shiroma, M. Tanaka, N. Akata, H. Kakiuchi, T. Sanada, M. Furukawa: Recent tritium concentration of monthly precipitation in Japan. Radiat. Prot. Dosim., 184, 334-337. (2019)
M. Tanaka, N. Akata, C. Iwata: Environmental tritium around a fusion test facility. Radiat. Prot. Dosim., 184, 324-327. (2019)
Y. Shiroma, S. Hirao, N. Akata, M. Furukawa, H. Miyake, H. Hayashi, T. Saze, M. Tanaka: Measurement of absorbed dose rate in air at NIFS site after the first deuterium plasma experiment in LHD. Plasma Fusion Res., 14, 1305130. (2019)
Saïdou, S. Tokonami, M. Hosoda, T.S.Y. Flore, N.N.J. Emmanuel II, N. Akata, O.B. Modibo, P. Joseph Natural radiation exposure to the public in the uranium bearing region of Poli, Cameroon: From radioactivity measurements to external and inhalation dose assessment. J. Geochem. Explor., 205, 106350. (2019)
S. Yokoyama, T. Takahashi, M. Ota, H. Kakiuchi, S. Sugihara, S. Hirao, N. Momoshima, T. Tamari, N. Shima, M.A. Andoh, S. Fukutani, S. Nakasone, M. Furukawa, M. Tanaka, N. Akata: Development of field estimation technique and improvement of environmental tritium behavior model. Plasma Fusion Res., 14, 3405099. (2019)
M. Kobayashi, T. Saze, H. Miyake, K. Ogawa, M. Isobe, M. Tanaka, N. Akata, K. Nishimura, H. Hayashi, T. Kobuchi, M. Yokota, M. Osuna, H. Nakanishi, M. Osakabe, Y. Takeiri: Radiation control in LHD and radiation shielding capability of the torus hall during first campaign of deuterium experiment. Fusion Eng. Des., 143, 180-187. (2019)
M.A. Gusyev, U. Morgenstern, T. Nishihara, T. Hayashi, N. Akata, K. Ichiyanagi, A. Sugimoto, A. Hasegawa, M.K. Stewart: Evaluating anthropogenic and environmental tritium effects using precipitation and Hokkaido snowpack at selected coastal locations in Asia. Sci. Total Environ., 659, 1307-1321. (2019)
山田 椋平, 玉熊 佑紀, 桑田 遥, 三枝 裕美, 渡邊 裕貴, 廣田 誠子, 金 千皓, 蔡 宇: 第1回日本保健物理学会・日本放射線安全管理学会合同シンポジウム印象記. 保健物理, 58, 169-177. (2023)
山田椋平, 小山内理, 赤田尚史, 田副博文, 辻口貴清, 伊藤勝博, 花田裕之, 床次眞司, 柏倉幾郎: 弘前大学高度被ばく医療支援センターにおける内部被ばく線量評価のためのバイオアッセイへの取り組み. 保健物理, 58, 27-30. (2023)
山田椋平, 富坂侑斗, 岩岡和輝, 赤田尚史: 国内における自然起源放射性物質（NORM）への対応 ─ NORM による被ばくの包括的調査（2021 年度）─. 保健物理, 57, 181-185. (2022)
I. Kashiwakura, N. Akata, M. Hosoda, T. Miura, C. Itaki, T. Tsujiguchi, S. Kameya, K. Ito, H. Hanada, S. Tokonami: Activities of the Organization for Radiation Emergency Medicine and Cooperation Promotion in Hirosaki University. Radiat. Environ. Med., 11, 75-81. (2022)
渡邊裕貴, 辻智也, 廣田誠子, 外間智規, 中嶌純也, 辻口貴清, 木村建貴, 小池弘美, 中村夏織, 桑田遥, 橋本啓来: 第 3 回日本放射線安全管理学会・日本保健物理学会合同大会印象記. 保健物理, 57, 54-64. (2022)