Papers - AKATA Naofumi
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Environmental radioactivity measurements in soil using inductively coupled plasma mass spectrometry and gamma-ray spectrometry in various areas in Cameroon
Modibo Oumar Bobbo, Guosheng Yang, Saïdou, Hirofumi Tazoe, Naofumi Akata, Chutima Kranrod, Masahiro Hosoda, Shinji Tokonami
Journal of Radioanalytical and Nuclear Chemistry 2023.7
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Efforts to Bioassay for Internal Radiation Dose Assessment at Advanced Radiation Emergency Medical Support Center, Hirosaki University
YAMADA Ryohei, OSANAI Osamu, AKATA Naofumi, TAZOE Hirofumi, TSUJIGUCHI Takakiyo, ITO Katsuhiro, HANADA Hiroyuki, TOKONAMI Shinji, KASHIWAKURA Ikuo
Japanese Journal of Health Physics 58 ( 1 ) 27 - 30 2023.4
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Tritium Concentration in Natural Spring Water Collected at Hirosaki, Japan
Naofumi AKATA, Kazusa OKADA, Haruka KUWATA, Khmruthai KHEAMSIRI, Masahiro HOSODA, Hirofumi TAZOE, Ryo YASUHARA, Shinji SUGIHARA, Ryohei YAMADA, Masahiro TANAKA
Plasma and Fusion Research 18 2405030 - 2405030 2023.4
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Response to Naturally Occurring Radioactive Material (NORM) in Japan; A Comprehensive Survey of Exposure from NORM in FY2021
YAMADA Ryohei, TOMISAKA Yuto, IWAOKA Kazuki, AKATA Naofumi
Japanese Journal of Health Physics 57 ( 4 ) 181 - 185 2023.2
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Spatial variations of 10Be in surface snow along the inland traverse route of Japanese Antarctic Research Expeditions
Kazuho Horiuchi, Shinji Kato, Kou Ohtani, Naoyuki Kurita, Shun Tsutaki, Fumio Nakazawa, Hideaki Motoyama, Kenji Kawamura, Hirofumi Tazoe, Naofumi Akata, Takeyasu Yamagata, Hiroyuki Matsuzaki
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 533 61 - 65 2022.12
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LEVELS OF ATMOSPHERIC TRITIUM IN THE SITE OF FUSION TEST FACILITY
Masahiro Tanaka, Chie Iwata, Miki Nakada, Akemi Kato, Naofumi Akata
Radiation Protection Dosimetry 198 ( 13-15 ) 1084 - 1089 2022.9
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INFLUENCE OF SAMPLING FLOW RATE ON THORON EXHALATION RATE MEASUREMENTS BY THE CIRCULATION METHOD
Masahiro Hosoda, Ryohei Yamada, Hiromu Kobyashi, Yuki Tamakuma, Eka Djatnika Nugraha, Hiroki Hashimoto, Ryoju Negami, Chutima Kranrod, Yasutaka Omori, Hirofumi Tazoe, Naofumi Akata, Shinji Tokonami
Radiation Protection Dosimetry 198 ( 13-15 ) 904 - 908 2022.9
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TRITIUM CONCENTRATION IN MONTHLY PRECIPITATION NEAR THE FUSION TEST FACILITY IN JAPAN BEFORE AND AFTER THE DEUTERIUM PLASMA EXPERIMENT
Naofumi Akata, Chie Iwata, Miki Nakada, Akemi Kato, Kazusa Okada, Haruka Kuwata, Shunya Nakasone, Masahiro Tanaka
Radiation Protection Dosimetry 198 ( 13-15 ) 976 - 984 2022.9
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TEMPORAL VARIATION OF POST-ACCIDENT 129I IN ATMOSPHERIC PARTICULATE MATTER COLLECTED FROM AN EVACUATED AREA OF FUKUSHIMA PREFECTURE, JAPAN
Hidenao Hasegawa, Hideki Kakiuchi, Shinya Ochiai, Naofumi Akata, Shinji Ueda, Shinji Tokonami
Radiation Protection Dosimetry 198 ( 13-15 ) 1143 - 1149 2022.9
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SPECIATION OF CESIUM ISOTOPES IN RIVER WATER: A CASE STUDY IN THE UKEDO RIVER
Hirofumi Tazoe, Ryo Tachizaki, Yuto Tomisaka, Haruka Kuwata, Naofumi Akata
Radiation Protection Dosimetry 198 ( 13-15 ) 1077 - 1083 2022.9
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PERFORMANCE EVALUATION OF COMMERCIAL SCINTILLATION COCKTAILS FOR LOW-LEVEL TRITIUM COUNTING BY HIGH-CAPACITY LIQUID SCINTILLATION COUNTER
Haruka Kuwata, Hirofumi Tazoe, Chutima Kranrod, Kenso Fujiwara, Motoki Terashima, Makoto Matsueda, Shigekazu Hirao, Naofumi Akata
Radiation Protection Dosimetry 198 ( 13-15 ) 1014 - 1018 2022.9
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Analysis of Factors Contributing to the Increase in 7Be Activity Concentrations in the Atmosphere
Yukinori Narazaki, Akihiro Sakoda, Naofumi Akata, Hisanori Itoh, Noriyuki Momoshima
International Journal of Environmental Research and Public Health 19 ( 16 ) 10128 - 10128 2022.8
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Monthly Precipitation Collected at Hirosaki, Japan: Its Tritium Concentration and Chemical and Stable Isotope Compositions
Haruka Kuwata, Naofumi Akata, Kazusa Okada, Masahiro Tanaka, Hirofumi Tazoe, Naoyuki Kurita, Nao Otashiro, Ryoju Negami, Takahito Suzuki, Yuki Tamakuma, Yoshitaka Shiroma, Masahiro Hosoda
Atmosphere 13 ( 5 ) 848 - 848 2022.5
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222Rn and 226Ra Concentrations in Spring Water and Their Dose Assessment Due to Ingestion Intake
Ryohei Yamada, Masahiro Hosoda, Tomomi Tabe, Yuki Tamakuma, Takahito Suzuki, Kevin Kelleher, Takakiyo Tsujiguchi, Yoshiki Tateyama, Eka Djatnika Nugraha, Anna Okano, Yuki Narumi, Chutima Kranrod, Hirofumi Tazoe, Kazuki Iwaoka, Yumi Yasuoka, Naofumi Akata, Tetsuya Sanada, Shinji Tokonami
International Journal of Environmental Research and Public Health 19 ( 3 ) 1758 - 1758 2022.2
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High Indoor Radon Concentration Observed in Yomitan-son,Okinawa Prefecture, Southwestern Part of Japan
Masahide Furukawa, Yasutaka Omori, Nagi Masuda, Yuki Tamakuma, Takahito Suzuki, Mika Obata, Reina Shingaki, Syunya Nakasone, Akinobu Ishimine, Kaori Nakamura, Yoshitaka Shiroma, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami
Radiation Enviroment and Medicine 11 ( 1 ) 16 - 20 2022.2
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Rapid Chemical Separation Protocol for Optimized 90Sr Determination by ICP-MS in Water Samples for Radiological Incident
Hirofumi Tazoe, Yuto Tomisaka, Naofumi Akata, Ben Russell, Peter Ivanov, Masahiro Hosoda, Shinji Tokonami
Radiation Enviroment and Medicine 11 ( 1 ) 7 - 15 2022.2
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Heavy Metal Assessments of Soil Samples from a High Natural Background Radiation Area, Indonesia
Eka Djatnika Nugraha, June Mellawati, Wahyudi, Chutima Kranrod, Makhsun, Hirofumi Tazoe, Haeranah Ahmad, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami
Toxics 10 ( 1 ) 39 - 39 2022.1
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Characterization of atmospheric tritiated water concentration in the vicinity of the fukushima daiichi nuclear power plant
Shigekazu Hirao, Hideki Kakiuchi, Naofumi Akata, Toshiya Tamari, Shinji Sugihara, Nagayoshi Shima, Sumi Yokoyama, Masahiro Tanaka
Journal of Radioanalytical and Nuclear Chemistry 2022
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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
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
保健物理学会誌 56 ( 4 ) 265 - 279 2021.12
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A Preliminary Study of Radon Equilibrium Factor at a Tourist Cave in Okinawa, Japan
Ryohei Yamada, Yuki Tamakuma, Takahito Suzuki, Shunya Nakasone, Yoshitaka Shiroma, Masahide Furukawa, Hiroki Hashimoto, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami
Atmosphere 12 ( 12 ) 1648 - 1648 2021.12