Yuji TorikaiProfessor
■Researcher basic information
Organization
Research Areas
Educational Background
Career
Member History
- Apr. 2022 - Present, 核融合炉工学委員会委員, 国立研究開発法人量子科学技術研究開発機構量子エネルギー部門
- Apr. 2022 - Present, 原型炉設計合同特別チーム, 国立研究開発法人量子科学技術研究開発機構量子エネルギー部門
- Jun. 2021 - Present, APLS処理水に係る海域モニタリング専門家会議, 環境省
- May 2021 - Mar. 2022, 令和3年度核融合炉工学研究委員会委員, 文部科学省(国立研究開発法人量子科学技術研究開発機構)
- May 2021 - Mar. 2022, 令和3年度核融合炉工学研究委員会委員, 国立研究開発法人量子科学技術研究開発機構
- Apr. 2021 - Mar. 2022, 原型炉設計合同特別チーム, 国立研究開発法人量子科学技術研究開発機構核融合エネルギー部門
- May 2020 - Mar. 2021, 令和2年度核融合炉工学研究委員会委員, 文部科学省(国立研究開発法人量子科学技術研究開発機構)
- Apr. 2020 - Mar. 2021, 原型炉設計合同特別チーム, 国立研究開発法人量子科学技術研究開発機構核融合エネルギー部門
- Apr. 2019 - Mar. 2020, 原型炉設計合同特別チーム, 国立研究開発法人量子科学技術研究開発機構核融合エネルギー部門
■Research activity information
Award
Paper
- 〔Major achievements〕Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-LIKE WALL
Y. Torikai; G. Kikuchi; A. Owada1; S. Masuzaki; T. Otsuka; N. Ashikawa; M. Yajima; M. Tokitani; Y. Oya; S. E. Lee; Y. Hatano; N. Asakura; T. Hayashi; M. Oyaidzu; J. Likonen; A. Widdowson; M. Rubel and JET Contributors, Lead, Divertor tiles after JET-ILW campaigns and dust collected after JET-C and JET-ILW operation were examined by a set of complementary techniques (full combustion and radiography) to determine the total, specific and areal tritium activities, poloidal tritium distribution in the divertor and the presence of that isotope in individual dust particles. In the divertor tiles, the majority of tritium is detected in the surface region and, the areal activities in the ILW divertor are in the 0.5 - 12 kBq cm-2 range. The activity in the ILW dust is associated mainly with the presence of carbon particles being a legacy from the JET-C operation. The total tritium activities show significant differences between the JET operation with ILW and the earlier phase with the carbon wall (JET-C) indicating that tritium retention has been significantly decreased in the operation with ILW., IOP Publishing
Nuclear Fusion, 05 Dec. 2023, [Reviewed] - 核融合プラズマ対向材の残留トリチウム測定法
菊 地 絃 太 *, 芦 川 直 子 , 鳥 養 祐 二, Last, 核融合原型炉の実現に向け,核融合炉内に蓄積したトリチウムの定量測定法の確立が必須である.本研究で は,迅速かつ簡便なトリチウムの定量測定法としてオートクレーブ法を提案する.核融合プラズマ曝露試料に対 する測定手法を確立するため,大型ヘリカル装置(LHD)で曝露された試料中に含まれるトリチウムを実測した.,その結果,ボロンや炭素の堆積がある LHD 試料内から得られた残留トリチウム量は1.3-10.3 Bq であり, また全量測定が可能であることを示した.堆積層が十分に薄く無視できる試料では拡散モデルに基づく理論値と オートクレーブ法による測定値で放出挙動が一致したが,堆積層が形成されている試料では堆積の特徴の違いに より理論値と測定値で放出挙動が異なることを明らかにし,これは残留トリチウムが存在する深さに依存するこ とを示唆した., プラズマ・核融合学会
J. Plasma Fusion Research, Jun. 2023, [Reviewed] - Tritium distributions in castellated structures of Be limiter tiles from JET-ITER-like wall experiments
S. Lee; Y. Hatano; S. Masuzaki; Y. Oya; M. Tokitani; M. Yajima; T. Otsuka; N. Ashikawa; Y. Torikai; N. Asakura; H. Nakamura; H. Kurotaki; T. Hayashi; T. Nozawa; A.M. Ito; J. Likonen; A. Widdowson; M. Rubel and JET Contributors, Tritium retention in the castellated structure of beryllium limiters used in JET with the ITER-like wall (ILW) during the first (ILW1), third (ILW3) and all three (ILW1-3) campaigns were examined and evaluated. Tritium was deposited on the surfaces inside the castellation grooves together with deuterium, beryllium, oxygen, carbon and small amounts of metallic impurities such as nickel, copper and tungsten. The tritium content after the ILW1 campaign was greater than after the ILW3 campaign. This is attributed to the steadily decreasing amount of carbon impurities in JET from campaign to campaign. The majority of tritium was retained in shallow regions in the grooves, up to 2 mm from the entrance to the gap. It was comparable on all sides of the castellation, i.e. no difference has been detected between the toroidal and poloidal gaps. Secondly, the tritium retention in the gaps was similar on all specimens independent of their position in the tokamak, while the retention on the plasma-facing surfaces clearly depended on the tile position. The tritium deposition patterns in the castellation were also compared with the deuterium distribution determined in earlier studies., IOP Science, IAEA
Nuclear Fusion, 08 Mar. 2023, [Reviewed] - Positron annihilation study of tungsten exposed to low-energy deuterium plasma
Tetsuya Hirade; Hikaru Furuta; Yuji Torikai; Yuki Fujimura; Koji Michishio, Positron annihilation lifetime spectroscopy (PALS) measurements by use of a positron source of 22Na were performed for the polycrystalline tungsten samples that were exposed to low-energy deuterium (D) plasma. The energy of D plasma was low and then it was expected that it would affect just the near-surface region. However, we obtained the longer mean positron annihilation lifetime in the tungsten samples exposed to the low-energy D plasma than the virgin tungsten sample. Moreover, the same longer values were obtained even on the other (no exposed) side of the samples, although the thickness of the samples was 1 mm or 2 mm. The elongation of the positron lifetime probably indicates defects formation in W. Ohsawa, et al. predicted that the high concentration hydrogen creates high concentration vacancy-hydrogen clusters by the first-principles calculations. We also performed positron annihilation age-momentum correlation (AMOC) measurements to know if there are some D’s at the positron trapping sites such as vacancies and found that some of the positrons annihilate with electrons in D., J-STAGE
JJAP Conference Proceedings, 13 Feb. 2023, [Reviewed] - An overview of tritium retention in dust particles from the JET-ILW divertor.
T Otsuka; S Masuzaki; N Ashikawa; Y Torikai; Y Hatano; M Tokitani; Y Oya; N Asakura; T Hayashi; H Tanigawa; Y Iwai; A Widdowson; M Rubel and JET Contributors,Abstract
Tritium (T) retention characteristics in dust collected from the divertor in JET with ITER-like wall (JET-ILW) after the third campaign in 2015–2016 (ILW-3) have been examined in individual dust particles by combining radiography (tritium imaging plate technique) and electron probe micro-analysis. The results are summarized and compared with the data obtained after the first campaign in 2011–2012 (ILW-1). The dominant component in ILW-1 dust was carbon (C) originating from tungsten-coated carbon fibre composite (CFC) tiles in JET-ILW divertor and/or legacy of C dust after the JET operation with carbon wall. Around 85% of the total tritium retention in ILW-1 dust was attributed to the C dust. The retention in tungsten (W) and beryllium (Be) dominated particles was 100 times smaller than the highest T retention in carbon-based particles. After ILW-3 the main component contributing to the T retention was W. The number of small W particles with T increased, in comparison to ILW-1, most probably by the exfoliation and fragmentation of W coatings on CFC tiles though T retention in individual W particles was smaller than in C particles. The detection of only very few Be-dominated dust particles found after ILW-1 and ILW-3 could imply stable Be deposits on the divertor tiles., IOP Publishing Ltd
Physica Scripta, Feb. 2022, [Reviewed] - Global distribution of tritium in JET with the ITER-like wall
S.E.Lee; Y. Hatano; M.Tokitani; S.Masuzaki; Y.Oya; T.Otsuka; N.Ashikawa; Y.Torikai; N.Asakura; H.Nakamura; K.Isobe; H.Kurotaki; D.Hamaguchi; T.Hayashi; A.Widdowson; S.Jachmich; J.Likonen; M.Rubel; JET contributors, ELSEVIA
Nuclear Materials and Energy, Mar. 2021, [Reviewed] - Investigation on tritium retention and surface properties on the first wall in the Large Helical Device
M. Yajima; S. Masuzaki; N. Yoshida; M. Tokitani; T. Otsuk; Y. Oya; Y. Torikai; G. Motojima; the LHD Experiment Groupa, ELSEVIA
Nuclear Materials and Energy, 20 Jan. 2021, [Reviewed] - Tritium retention in displacement-damaged tungsten exposed to deuterium-tritium gas mixture at elevated temperatures
V.Kh.Alimov; Y.Torikaia; Y.Hatano; T.Schwarz-Selingerd, W samples, previously irradiated with 20 MeV W ions at room temperature to a displacement-damage level of 0.23 displacements per atom (dpa) at the peak of displacements, were exposed to a deuterium-tritium (D2 ― DT ― T2) gas mixture with a tritium content of 6% at a total pressure of 1.2 kPa and temperatures of 773 K and 973 K for 3 h. The concentration of tritium retained in the displacement-damage zone of these W samples was determined by a method combining chemical etching and subsequent analysis of tritium in the etching solution using liquid scintillation counting (CE-LSC)., ELSEVIER
Fusion Engineering and Design, 18 Nov. 2020, [Reviewed] - Determination of retained tritium from ILW dust particles in JET
N. Ashikawa; Y. Torikai; N. Asakura; T. Otsuka; A. Widdowson; M. Rubel; M. Oyaizu; M. Hara; S. Masuzaki; K. Isobe; Y. Hatano; K. Heinola; A. Baron-Wiechec; S. Jachmich; T. Hayashi and JET
Nuclear Materials and Energy, Jan. 2020, [Reviewed] - Influence of plasma impurities on the fuel retention in tungsten
A. Kreter; D. Nishijima; R.P. Doerner; M. Freisinger; Ch. Linsmeier; Y. Martynova; S. Möller; M. Rasinski; M. Reinhart; A. Terra; Y. Torikai and B. UnterbergHayashi and JET Contributors
Nuclear Fusion, Jun. 2019 - Effects of baking in deuterium atmosphere on tritium removal from tungsten
Yuji Nobuta; Yuji Hatano; Yuji Torikai; Masato Nakayama
Fusion Engineering and Design, Nov. 2018, [Reviewed] - Measurement of tritium in tungsten deposition layer by imaging plate technique after exposure to gaseous tritium
M. Noguchi; K. Katayama; Y. Torikai; N. Ashikawa; A. Taguchi; S. Fukada
Fusion Engineering and Design, Nov. 2017, [Reviewed] - The microstructure of tungsten exposed to D plasma with different impurities
M. Rasinski; A. Kreter; Y. Torikai; Ch. Linsmeier
Nuclear Materials and Energy, Aug. 2017, [Reviewed] - Comparison of TEM and positron annihilation lifetime spectroscopy on tungsten exposed to mixed D plasmas
M. Rasinski; A. Kreter; Y. Torikai; G. P. Karwasz
European Microscopy Congress 2016, Dec. 2016, [Reviewed] - Desorption behavior of tritiated water from organic functionalized mesoporous silica
A. Taguchi; Y. Kato; R. Akai; Y. Torikai
Fusion Engineering and Design, Dec. 2016, [Reviewed] - Tritium desorption and tritium removal from tungsten pre-irradiated with helium
Y. Nobuta; Y. Hatano; Y. Torikai; M. Matsuyama; S. Abe; Y. Yamauchi
Fusion Engineering and Design, Jan. 2016, [Reviewed] - Tritium burning in inertial electrostatic confinement fusion facility
M. Ohnishi; Y. Yamamoto; H. Osawa; Y. Hatano; Y. Torikai; I. Murata; K. Kamakura; M. Onishi; K. Miyamoto; H. Konda; K. Masuda; E. Hotta
Fusion Engineering and Design, Nov. 2015, [Reviewed] - Gaseous tritium uptake by C deposition layer on tungsten
Y. Hamaji; H.T. Lee; Y. Torikai; K. Sugiyama; Y. Ueda
Journal of Nuclear Materials, Aug. 2015, [Reviewed] - Tritium release from SS316 under vacuum condition
Y. Torikai and R.-D. Penzhorn, Lead
Fusion Science and Technology, Apr. 2015, [Reviewed] - Measurement of Uptake and Release of Tritium by Tungsten
M. Nakayama; a; Y. Torikai; M. Saito; R. -D. Penzhorn; K. Isobe; T. Yamanishi; H. Kurishita
Fusion Science and Technology, Apr. 2015, [Reviewed] - Tritium Trapping on the Plasma Irradiated Tungsten Surface
Y. Torikai; V. Kh. Alimov; K. Isobe; M. Oyaidzu; T. Yamanishi; R.-D. Penzhorn; Y. Ueda; H. Kurishita; V. Philipps; A. Kreter; M. Zlobinski, Lead
Fusion Science and Technology, Apr. 2015, [Reviewed] - Tritium Removal from Tritiated Water by Organic Functionalized SBA-15
A. Taguchi; Y. Kato; R. Akai; Y. Torikai; M. Matsuyama
Fusion Science and Technology, Apr. 2015, [Reviewed] - Behavior of Tritium in the Vacuum Vessel of JT-60U
Y. Torikai; M. Saito; V. Alimov; N. Miya and Y. Ikeda
Fusion Science and Technology, Mar. 2015, [Reviewed] - Current status of nanostructured tungsten-based materials development
H. Kurishita; S. Matsuo; H. Arakawa; T. Sakamoto; S. Kobayashi; K. Nakai; H. Okano; H. Watanabe; N. Yoshida; Y. Torikai; Y. Hatano; T. Takida; M. Kato; A. Ikegaya; Y. Ueda; M. Hatakeyama; T. Shikama, IOP Science
Physica Scripta, 01 Apr. 2014, [Reviewed] - Surface erosion and modification of toughened, fine-grained, recrystallized tungsten exposed to TEXTOR edge plasma
Y. Ueda; M. Oya; Y. Hamaji; H. T. Lee; H. Kurishita; Y. Torikai; N. Yoshida; A. Kreter; J. W. Coenen; A. Litnovsky; V. Philipps, IOP Sience
Physica Scripta, 01 Apr. 2014, [Reviewed] - Tritium trapping behavior in tungsten pre-irradiated with D, He, Ar and N plasmas
Y Hamaji; Y Torikai; H T Lee; Y Otsuka; Y Ueda, Tritium (T) trapping in tungsten after plasma exposure (deuterium (D), helium (He), nitrogen (N), argon (Ar)) was studied using an imaging plate technique. Specimens were exposed to D and T mixed gas at 77 and 573 K to distinguish T trapped at the outermost surface and several tens of nanometers, respectively. He followed by N, Ar and D plasma exposures resulted in the largest increase in T trapping. This was interpreted to result from He bubble layers that can increase the surface area by formation of pores connected to the surface and/or an increase in surface trapping sites. T exposure at 77 K was found to be a very useful method to observe plasma-induced changes to T trapping at the outermost surface., IOP Science
Physica Scripta, 01 Apr. 2014, [Reviewed] - Enrichment of tritiated water using mesoporous silica
A. Taguchi; Y. Kato; Y. Torikai; M. Matsuyama; S. Uchida
Microporous and Mesoporous Materials, 15 Sep. 2013, [Reviewed] - Tritium Interaction with Surface Layer and bulk of Type 316 Stainless Steel and Consequences of Aging
R.-D. Penzhorn; Y. Hatano; M. Matsuyama; Y. Torikai, Last, ANS
Fusion Since and Technology, Jul. 2013, [Reviewed] - Tritium loading study of tungsten pre-exposed to TEXTOR plasmas
Y. Torikai; A. Taguchi; M. Saito; R.-D. Penzhorn; Y. Ueda; H. Kurishita; K. Sugiyama; V. Philipps; A. Kreter; M. Zlobinski; TEXTOR team, Lead, Elsevia
Journal of Nuclear Materials, Jul. 2013, [Reviewed] - Deuterium retention in Toughened, Fine-Grained Recrystallized Tungsten
M. Oya; K. Uekita; H. T. Lee; Y. Ohtsuka; Y. Ueda; H. Kurishita; A. Kreter; J. W. Coenen; V. Philipps; S. Brezinsek; A. Litnovsky; K. Sugiyama; Y. Torikai, Last, Elsevia
Journal of Nuclear Materials, Jul. 2013, [Reviewed] - Melt-layer ejection and material changes of three different tungsten materials under high heat-flux conditions in the tokamak edge plasma of TEXTOR
J. W. Coenen; V. Philipps; S. Brezinsek; G. Pintsuk; I. Uytdenhouwen; M. Wirtz; A. Kreter; K. Sugiyama; H. Kurishita; Y. Torikai; Y. Ueda; U. Samm
NUCLEAR FUSION, Nov. 2011, [Reviewed] - Trapping and depth profile of tritium in surface layers of metallic materials
M. Matsuyama; Z. Chen; K. Nisimura; S. Akamaru; Y. Torikai; Y. Hatano; N. Ashikawa; Y. Oya; K. Okuno; T. Hino
Journal of Nuclear Materials, 01 Oct. 2011, [Reviewed]
Lectures, oral presentations, etc.
- 環境中トリチウム測定-迅速測定法の開発とその測定結果
遠藤陸冬; 小畑結衣; 清水文香; 猪狩直哉; 狩谷陸斗; 佐々木俊; 石川義朗; 柿内秀樹; 川上智彦; 柴田敏宏; 鳥養祐二
日本原子力学会北関東支部若手研究者・技術者研究発表会, 05 Feb. 2026, 日本原子力学会北関東支部
20260205, 20260205 - トリチウムに汚染されたタングステンの除染法の開発
大野 千載; 小畑 結衣; 西田 璃音; 溝淵 一馬; 芦川 直子; 増崎 貴; 矢嶋 美幸; 大和田 篤志; 磯部 兼嗣; 林 巧; 中村 博文; 杉本 有隆; M. Rubel; A. Widdowso; 鳥養 祐二
日本原子力学会北関東支部若手研究者・技術者研究発表会, 05 Feb. 2026
20260205, 20260205 - 化学エッチング法を用いたタングステン中のトリチウムの分析(1) タングステンの化学エッチング法
溝淵 一馬, 小畑 結衣, 西田 璃音, 大野 千載, 芦川 直子, 増崎 貴, 矢嶋 美幸, 大和田 篤志, 磯部 兼嗣, 林 巧, 中村 博文, 杉本 有隆, M. Rubel, A. Widdowso, 鳥養 祐二
日本原子力学会北関東支部若手研究者・技術者研究発表会, 05 Feb. 2026
20260205, 20260205 - 環境中トリチウム測定①-迅速測定法の開発とその測定結果
遠藤陸冬; 小畑結衣; 清水文香; 猪狩直哉; 狩谷陸斗; 佐々木俊; 石川義朗; 柿内秀樹; 川上智彦; 柴田敏宏; 鳥養祐二
日本保健物理学会第58回研究発表会, 19 Dec. 2025
20251218, 20251220 - 化学エッチング法を用いたタングステン中のトリチウムの分析(1) タングステンの化学エッチング法
溝淵 一馬; 小畑 結衣; 西田 璃音; 大野 千載; 芦川 直子; 増崎 貴; 矢嶋 美幸; 大和田 篤志; 磯部 兼嗣; 林 巧; 中村 博文; 杉本 有隆; M. Rubel; A. Widdowso; 鳥養 祐二
第42回プラズマ・核融合学会 年会大会, 03 Dec. 2025
20251201, 20251204 - 化学エッチング法を用いたタングステン中のトリチウムの分析(2) タングステンの除染
大野 千載; 小畑 結衣; 西田 璃音; 溝淵 一馬; 芦川 直子; 増崎 貴; 矢嶋 美幸; 大和田 篤志; 磯部 兼嗣; 林 巧; 中村 博文; 杉本 有隆; M. Rubel; A. Widdowso; 鳥養 祐二
第42回プラズマ・核融合学会 年会大, 03 Dec. 2025
20251201, 20251204 - タングステン中トリチウムに対する除染・定量分析法の開発とJETダイバータタイルの分析
西田 璃音; 小畑 結衣; 大野 千載; 溝淵 一馬; 芦川 直子; 増崎 貴; 矢嶋 美幸; 大和田 篤志; 磯部 兼嗣; 林 巧; 中村 博文; 杉本 有隆; M. Rubel; A. Widdowson; 鳥養 祐二
第42回プラズマ・核融合学会 年会, 03 Dec. 2025
20251201, 20251204 - Isotope effects of organically bound and free-water hydrogen isotopes in living organisms grown in seawater containing tritium and deuterium
Yui OBATA; Takeru HOSONE; Daiki NAMBA; Naoya IGARI; Rikuto ENDO; Fumika SHIMIZU; Rikuto KARIYA; Shun SASAKI; Yoshio ISHIKAWA; Hideki KAKIUCHI; Shinji UEDA; Tomohiko KAWAKAMI; Yuji TORIKAI
The JRRS/ACRR2025 conference, 25 Oct. 2025
20251023, 20251026 - Rapid Tritium Measurement Method for Safety Assessment and Biokinetic Studies
Yui OBATA; Naoya IGARI; Rion NISHIDA; Rikuto ENDO; Fumika SHIMIZU; Senzai OONO; Kazuma MIZOBUCHI; Yuji TORIKAI
10th International Symposium of Quantum Beam Science at Ibaraki University, Rapid Tritium Measurement Method for Safety Assessment and Biokinetic Studies, 10 Oct. 2025
20251009, 20251011 - GLOBAL CHARACTERIZATION OF TRITIUM IN PLASMA-FACING MATERIALS FROM THE JET TOKAMAK WITH METAL WALLS: COOPERATION WITHIN BROADER APPROACH
K. Isob; M. Yajima; S. Masuzaki; M. Tokitani; Y. Hatano; Y. Oya; M. Miyamoto; Y; Torikai; Y. Obata; T. Otsuka; N. Asakura; H. Nakamura; T. Hayashi; D. Hamaguchi; H; Tanigawa; J. Kim; Y. Sugimoto; T. Nozawa; J. Likonen; M. Rubel; A. Widdowson
24 Sep. 2025
20250921, 20250926 - Isotope effects on the uptake and release of hydrogen isotopes into biological free water
Yui OBATA; Takeru HOSONE; Daiki NAMBA; Naoya IGARI; Rikuto ENDO; Fumika SHIMIZU; Yoshio ISHIKAWA; Hideki KAKIUCHI; Tomohiko KAWAKAMI; Yuji TORIKAI
14th International Conference on Tritium Science and Technology, 20 Sep. 2025
20250921, 20250926 - 〔Major achievements〕Depth profiling of tritium in bulk tungsten divertor tiles from JET with metal walls: tritium quantification and surface decontamination
Y. Torikai; Y. Obata; K. Kasai; R. Nishida; S. Oono; K. Mizobuchi; N. Ashikawa; A. Owada; S; Masuzaki; M. Yajima; K. Isobe; T. Hayashi; H. Nakamura; Y. Sugimoto; M. Rubel; A. Widdowson
20TH INTERNATIONAL CONFERENCE ON PLASMA-FACING MATERIALS AND COMPONENTS FOR FUSION APPLICATIONS, 22 May 2025
20250519, 20250523 - Tritium containing plasma-facing materials from fusion reactors: research needs, capabilities and limitations in tritium studies
Miyuki Yajima; Yuji Hatano; Yasuhisa Oya; Teppei Otsuka; Yuji Torikai; Suguru Masuzaki; Masayuki Tokitani; Mitsutaka Miyamoto; Yui Obata; Nobuyuki Asakura; Hirofumi Nakamura; Takumi Hayashi; Kanetsugu Isobe; Dai Hamaguchi; Hiroyasu Tanigawa; Kim Jaehwan; Yutaka Sugimoto; Takashi Nozawa; Anna Widdowson; Marek Rubel; Jari Likonen
20th International Conference on Plasma-Facing Materials and Components for Fusion Applications, 22 May 2025, [Invited]
20250518, 20250523 - JET-ダイバータタイルのトリチウム分析
鳥養祐二、菊地絃太、○大和田篤志、増崎貴、大塚哲平、芦川直子、矢嶋美幸、時谷政行、大矢恭久、S.E.Lee、波多野雄治、朝倉伸行、林巧、小柳津誠、J.Likonen、A.Widdowson、M.Rubel
日本放射化学会第66回討論会(2022), 16 Sep. 2022, 日本放射化学会
20220915, 20220917 - Development of a rapid measurement method for environmental tritium concentratio n,( Rapid screening method for tritium concentration in fis h
細根 孟留、 南 場 大 輝、川上 智 彦、柿内 秀 樹、鳥養 祐 二
日本原子力学会2022年秋の大会, 08 Sep. 2022, 日本原子力学会
20220907, 20220909 - Development of a rapid measurement method for environmental tritium concentration (3) Simplification and acceleration of environmental tritium measurement
南場 大輝、細根 孟留、川上 智彦、柿内 秀樹、鳥養 祐二
日本原子力学会2022年秋の大会, 08 Sep. 2022, 日本原子力学会
20220907, 20220909 - 〔Major achievements〕海水中トリチウムの 測定法
鳥養 祐二; 本間 駿太
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, 01 Dec. 2021
20211201, 20211203 - Tritium retention in dust particles and divertor tiles of JET operated with the ITER-Like Wall
Y. TORIKAI; G. KIKUCHI; A. OWADA; S. MASUZAKI; T. OTSUKA; N. ASHIKAWA; M. YAJIMA; M. TOKITANI; Y. OYA; S. E. LEE; Y. HATANO; N. ASAKURA; T. HAYASHI; M. OYAIDZU; A. WIDDOWSON; M. RUBEL and JET Contributors
28th IAEA Fusion Energy Conference, 14 May 2021
20210510, 20210515 - 核融合炉材料からの大気圧下でのトリチウムの放出
鳥養祐二
プラズマ・核融合学会 第37回年会, 02 Dec. 2020 - 原型炉のトリチウム管理基準の考え方
鳥養祐二
プラズマ核融合学会 第36回年会, 30 Nov. 2019
20191129, 20191202
Affiliated academic society
Research Themes
- 放射線とトリチウムの知識の習熟を基盤とした原子力規制人材育成
Aug. 2023 - Mar. 2028 - ZrCo材料の水素吸蔵性能試験
Oct. 2025 - Mar. 2026 - JET ILW実験におけるプラズマ対向機器表面およびダストのトリチウム蓄積特性研究
Jun. 2025 - Jan. 2026 - プラズマ対向壁への水素同位体の蓄積量の定量手法の開発と定量評価
核融合科学研究所
Apr. 2023 - Mar. 2024 - 魚介類トリチウム濃度の迅速測定法に関するフィジビリティスタディ
国立研究開発法人日本原子力研究開発機構
Jun. 2022 - Mar. 2023 - 魚中のトリチウム濃度測定法の簡素化・最適化
Apr. 2022 - Mar. 2023 - LHD真空容器内への水素同位体の蓄積量の定量手法の開発と定量評価
Apr. 2022 - Mar. 2023 - 核融合実現に向けたトリチウム諸課題の検討
Apr. 2022 - Mar. 2023 - Investigation of tritium decontamination method under the vacuum condition for fusion reactors
Grant-in-Aid for Scientific Research (C)
National Institute for Fusion Science
01 Apr. 2018 - 31 Mar. 2022 - Measurement of Hydrogen Isotope trapping on inside materials of LHD
Apr. 2021 - Mar. 2022 - Effective tritium removal under vacuum conditions
Apr. 2021 - Mar. 2022 - Tritium Transport in Fusion Reactor Materials
Apr. 2021 - Mar. 2022 - Evaluation of multi hydrogen isotope transfer behavior on plasma driven permeation for plasma facing materials
Apr. 2021 - Mar. 2022 - Workshop on plasma-wall interactions in LHD
Apr. 2021 - Mar. 2022 - Behavior, function and perspective of hydrogen isotope
Apr. 2021 - Mar. 2022 - 核融合実現に向けたトリチウム諸課題の検討
Apr. 2021 - Mar. 2022 - JET ILW実験におけるプラズマ対向機器表面およびダストのトリチウム蓄積特性研究
Jun. 2021 - Jan. 2022 - Tritium bioeffects research for establishing social consensus on the disposal of tritiated water by oceanic discharge
Grant-in-Aid for Scientific Research (B)
Ibaraki University
01 Apr. 2016 - 31 Mar. 2021 - Hydrogen isotope exchange on metaric plasma facing walls
Apr. 2020 - Mar. 2021 - Evaluation of tritium tasks in DEMO
Apr. 2020 - Mar. 2021 - Tritium Transport in Fusion Reactor Materials
Apr. 2020 - Mar. 2021 - Tritium behavior in a secondary cooling system in a fusion DEMO reactor
Apr. 2020 - Mar. 2021 - Evaluation of multi hydrogen isotope transfer behavior on plasma driven permeation for plasma facing materials
Apr. 2020 - Mar. 2021 - Workshop on plasma-wall interactions in LHD
Apr. 2020 - Mar. 2021 - Measurement of hydrogen isotope inventory in inside materials of LHD
Apr. 2020 - Mar. 2021 - Management of Interdisciplinary study of tritium accepted in general public
Grant-in-Aid for Challenging Exploratory Research
01 Apr. 2015 - 31 Mar. 2017 - Estimation of tritium accumulation in tungsten and its application for ITER divertor
Grant-in-Aid for Scientific Research (B)
University of Toyama
01 Apr. 2012 - 31 Mar. 2015 - TRITIUM PERMEATION, CONTAMINATION AND DECONTAMINATION
Grant-in-Aid for Scientific Research on Priority Areas
University of Toyama
2007 - 2011 - Research and development of a functional material with low adsorption and solubility of tritium for fusion systems.
Grant-in-Aid for Scientific Research (C)
University of Toyama
2007 - 2009 - Construction of the standard system for absolute measurement of tritium
Grant-in-Aid for Scientific Research (A)
University of Toyama
2003 - 2005 - Tracking of tritium trapped on/in high-Z materials by BIXS
Grant-in-Aid for Scientific Research (B)
TOYAMA UNIVERSITY
2001 - 2002
Social Contribution Activities
- NHK取材
coverage_cooperation
NHK, 26 May 2023 - 原子力産業新聞取材
coverage_cooperation
原子力産業新聞, 19 May 2023 - 原子力産業新聞取材
coverage_cooperation
原子力産業新聞, 12 May 2023 - NHK取材
coverage_cooperation
NHK, 26 Apr. 2023 - 原子力産業新聞取材
coverage_cooperation
原子力産業新聞, 20 Apr. 2023 - 共同通信社取材
coverage_cooperation
共同通信社, 19 Apr. 2023 - 読売新聞取材
coverage_cooperation
読売新聞, 14 Apr. 2023 - 読売新聞取材
coverage_cooperation
読売新聞, 12 Apr. 2023 - 第8回 ALPS処理水に係る海域モニタリング専門家会議
others
環境省, 24 Mar. 2023 - 環境省との打合せ
others
20 Mar. 2023 - 第58回RI・放射線利用促進セミナー
lecturer
中部原子力懇話会, 10 Feb. 2023 - 第7回 ALPS処理水に係る海域モニタリング専門家会議
others
環境省, 07 Feb. 2023 - 環境省との打合せ
others
31 Jan. 2023 - 第6回 ALPS処理水に係る海域モニタリング専門家会議
others
環境省, 14 Dec. 2022 - 環境省との打合せ
others
25 Nov. 2022 - 資源エネルギー庁との打合せ
others
01 Nov. 2022 - 第1回 ALPS処理水モニタリングシンポジウム
panelist
経済産業省, 25 Oct. 2022 - 資源エネルギー庁との打合せ
others
14 Oct. 2022 - 第1回 ALPS処理水モニタリングシンポジウム
panelist
経済産業省, 09 Sep. 2022 - 環境省との打合せ
others
01 Sep. 2022 - 資源エネルギー庁との打合せ
others
21 Jul. 2022 - 環境省との打合せ
others
10 Jun. 2022 - 資源エネルギー庁との打合せ
others
09 Jun. 2022 - 女川町議会原発対策特別委員会
lecturer
女川町議会, 09 Jun. 2021 - ゴジてれChu!
appearance
福島中央テレビ, ゴジてれChu!, 18 Mar. 2020 - ひるおび
appearance
TBSテレビ, ひるおび, 03 Oct. 2019 - NEWS every
appearance
日本テレビ, NEWS every, 03 Oct. 2019 - 深層NEWS
appearance
日本テレビ, 深層NEWS, 26 Sep. 2019 - ミヤネ屋
appearance
読売テレビ, ミヤネ屋, 25 Sep. 2019 - サタデーステーション
appearance
テレビ朝日, サタデーステーション, 21 Sep. 2019
Media Coverage
- トリチウムの迅速測定
NHK, NHK NEWS おはよう日本, 08 Aug. 2023, Media report - リスクを見つめる トリチウム水道水にも
読売新聞, 27 Jun. 2023, Paper - 韓国で塩"品切れ"背景に「雨」と「原発」福島原発の処理水放出への”不安”
日本テレビ, ニュースゼロ, 21 Jun. 2023, Media report - ゴジてれChu!
福島中央テレビ, ゴジてれChu!, 18 Mar. 2020, Media report - ひるおび
TBSテレビ, ひるおび, 03 Oct. 2019, Media report - NEWS every
日本テレビ, NEWS every, 03 Oct. 2019, Media report - 深層NEWS
日本テレビ, 深層NEWS, 26 Sep. 2019, Media report - ミヤネ屋
読売テレビ, ミヤネ屋, 25 Sep. 2019, Media report - サタデーステーション
テレビ朝日, サタデーステーション, 21 Sep. 2019, Media report