Papers - AKATA Naofumi
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Tritium determination in natural water samples in Fukushima from 2022 to 2023 using an ultra-low-level tritium counting system
Miklós Hegedűs, Haruka Kuwata, Khemruthai Kheamsiri, Maté Novák, Ryohei Yamada, Naofumi Akata, Tibor Kovács
Radiation Protection Dosimetry 200 ( 16-18 ) 1845 - 1849 2024.11
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Tritium concentration in monthly precipitation in Okinawa and Kagoshima, southern Japan
Naofumi Akata, Kaho Ohno, Haruka Kuwata, Khemruthai Kheamsiri, Yukiko Yoshinaka, Ryohei Yamada, Yuisa Kitayama, Sana Aizawa, Shunya Nakasone, Akinobu Ishimine, Masahiro Tanaka, Yoshitaka Shiroma, Shinji Tokonami, Masahide Furukawa
Radiation Protection Dosimetry 200 ( 16-18 ) 1792 - 1796 2024.11
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Study of seasonal variation of accident-derived atmospheric radiocesium in Koriyama City, Fukushima Prefecture, Japan during 2011–2014
Hidenao Hasegawa, Naofumi Akata, Katsuhiko Okuyama, Shinya Ochiai, Hideki Kakiuchi, Shinji Ueda
Radiation Protection Dosimetry 200 ( 16-18 ) 1829 - 1834 2024.11
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Optimization of pretreatment protocol for strontium-90 analysis in marine fish bone samples
Hirofumi Tazoe, Yosuke Amano, Yasuo Ishida, Masatoshi Yamada, Naofumi Akata
Radiation Protection Dosimetry 200 ( 16-18 ) 1861 - 1866 2024.11
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Impacts of the large fusion test facility on tritium in environmental water and natural radiation levels
Masahiro Tanaka, Saori Kurita, Naofumi Akata
Radiation Protection Dosimetry 200 ( 16-18 ) 1802 - 1806 2024.11
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Evaluation of combustion system for organically bound tritium analysis using dried fish samples
Haruka Kuwata, Ryohei Yamada, Khemruthai Kheamsiri, Hideki Kakiuchi, Toshiya Tamari, Nagayoshi Shima, Naofumi Akata
Radiation Protection Dosimetry 200 ( 16-18 ) 1807 - 1812 2024.11
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Development of evaluation method for radiocesium availability in soil by biomimetic approach
Akira Takeda, Yusuke Unno, Mathew J B Swallow, Yasumi Yagasaki, Tetsuo Yasutaka, Naofumi Akata
Radiation Protection Dosimetry 200 ( 16-18 ) 1767 - 1771 2024.11
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Characteristics of tritium, stable isotopes and chemical components in monthly precipitation at Hiroshima, Japan
Ryohei Yamada, Haruka Kuwata, Khemruthai Kheamsiri, Kaho Ohno, Yuisa Kitayama, Yukiko Yoshinaka, Shinji Yoshinaga, Naoyuki Kurita, Naofumi Akata
Radiation Protection Dosimetry 200 ( 16-18 ) 1797 - 1801 2024.11
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Behavior of radioactive cesium concentration for 13 years after FDNPP accident at Koriyama campus of Nihon University, Fukushima, Japan
Ryoko Suzuki, Katsuhiko Okuyama, Kohei Chiba, Taiki Hashimoto, Natsumi Katsumata, Azusa Ukitsu, Khemruthai Kheamsiri, Ryohei Yamada, Naofumi Akata
Radiation Protection Dosimetry 200 ( 16-18 ) 1835 - 1839 2024.11
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Interlaboratory Comparison in Japan for Radon Determination in Water
Shunya NAKASONE, Akinobu ISHIMINE, Yuki TAMAKUMA, Masahiro HOSODA, Naofumi AKATA, Tetsuya SANADA, Masahiro TANAKA, Sumi YOKOYAMA, Minoru SAKAMA, Akira TANAHARA, Masahide FURUKAWA, Shinji TOKONAMI, Yumi YASUOKA, Yoshitaka SHIROMA
Japanese Journal of Health Physics 59 ( 3 ) 131 - 134 2024.10
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Performance Test of Improved Commercially Available Tritium Enrichment System: Toward Rapid and High Efficiency Enrichment
Naofumi Akata, Kazusa Okada, Nao Otashiro, Haruka Kuwata, Khemruthai Kheamsiri, Kaho Ohno, Yukiko Yoshinaka, Ryohei Yamada, Masahiro Tanaka
Radiation Environment and Medicine 13 ( 2 ) 60 - 64 2024.8
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Variation analysis of atmospheric 7Be activity concentrations with respect to precipitation
Yukinori Narazaki, Akihiro Sakoda, Naofumi Akata, Hisanori Itoh, Noriyuki Momoshima
Journal of Environmental Radioactivity 277 107432 - 107432 2024.7
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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
Naofumi Akata, Donovan Anderson, Hideki Kakiuchi, Ryohei Yamada, Hidenao Hasegawa, Shinji Ueda
Science of The Total Environment 947 174404 - 174404 2024.7
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Environmental Radioactivity during Active Testing at the Rokkasho Reprocessing Plant—Effects on Environment by Released Radionuclides—
Shinji Ueda, Hidenao Hasegawa, Hideki Kakiuchi, Yoshihito Ohtsuka, Koichi Abe, Naofumi Akata, Shinya Ochiai
RADIOISOTOPES 73 ( 1 ) 81 - 99 2024.3
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Temporal variation of tritium concentration in monthly precipitation collected at a Difficult-to-Return Zone in Namie Town, Fukushima Prefecture, Japan
Ryohei Yamada, Hidenao Hasegawa, Naofumi Akata, Hideki Kakiuchi, Shinya Ochiai, Haruka Kuwata, Khemruthai Kheamsiri, Shinji Tokonami, Shinji Ueda
Environmental Science and Pollution Research 31 ( 5 ) 7818 - 7827 2024.1
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Assessing the variability of tissue-free water tritium and non-exchangeable organically bound tritium in pine needles in Fukushima using atmospheric tritrated water vapor
Shigekazu Hirao, Hideki Kakiuchi, Naofumi Akata, Toshiya Tamari, Shinji Sugihara, Nagayoshi Shima, Masahiro Tanaka
Science of The Total Environment 907 2024.1
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環境中のトリチウムとその挙動
赤田 尚史
アイソトープ・放射線研究発表会 4 ( 0 ) 3 2024
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Uranium Isotope Characterization in Volcanic Deposits in a High Natural Background Radiation Area, Mamuju, Indonesia
Ilsa Rosianna, Eka Djatnika Nugraha, Hirofumi Tazoe, Heri Syaeful, Adi Gunawan Muhammad, I Gde Sukadana, Frederikus Dian Indrastomo, Ngadenin, Fadiah Pratiwi, Agus Sumaryanto, Sucipta Sucipta, Hendra A. Pratama, Deni Mustika, Leli Nirwani, Nurokhim, Yasutaka Omori, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami
Geosciences 13 388 2023.12
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Calibration experiments for radon in drinking water measurements using portable-type electrostatic-collection radon monitors
Masahiro Hosoda, Yasutaka Omori, Hiroki Hashimoto, Maho Matsumoto, Yumi Yasuoka, Tetsuya Sanada, Yuki Oda, Mizuki Kiso, Aoi Sampei, Chutima Kranrod, Hirofumi Tazoe, Naofumi Akata, Yasuyuki Taira, Yuki Tamakuma, Ryohei Yamada, Hiromi Kudo, Mayumi Shimizu, Shinji Tokonami
Radiation Protection Dosimetry 199 ( 18 ) 2203 - 2206 2023.11
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Tritium concentration in bottled drinking water and internal dose assessment
Khemruthai Kheamsiri, Naofumi Akata, Haruka Kuwata, Masahiro Tanaka, Masahiro Hosoda, Michiya Sasaki, Yoshitaka Shiroma, Shinji Tokonami, Ryohei Yamada, Chutima Kranrod, Kazuki Iwaoka, Tibor Kovάcs
Journal of Radioanalytical and Nuclear Chemistry 333 ( 5 ) 2597 - 2603 2023.7