マイクロ共晶体構造を応用した量子線弁別型超高解像度イメージング装置の開発

2023 Fiscal Year Annual Research Report

• Project/Area Number: 19H00672
• Research Institution: Tohoku University
• Principal Investigator: 鎌田 圭 東北大学, 未来科学技術共同研究センター, 准教授 (60639649)
• Co-Investigator(Kenkyū-buntansha): 山本 誠一 早稲田大学, 理工学術院総合研究所(理工学研究所), 上級研究員(研究院教授) (00290768) ; 島添 健次 東京大学, 大学院工学系研究科(工学部), 准教授 (70589340)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: シンチレータ / 放射線検出器 / 共晶体 / 光導波

Outline of Annual Research Achievements

昨年度までに、共晶体に対し、シンチレータ材料の選択制、構造の均質化、大口径化の容易性の点で優位性を有する、新しい構造化シンチレータを開発した。量産性も高く、産業化も容易と考えられる。さらに、平行度の高いX線などのビームラインを活用した、イメージング試験を実施した。また、高分解能放射線イメージング検出器を開発し、放射線の一種であるアルファ線の飛跡を短時間間隔のリアルタイム画像として可視化できることを実証した。
今年度は、Tl添加Cs3Cu2I5、Tl添加CsI、Eu添加SrI2、CeBr3といった発光量と蛍光寿命に優れたハロゲン化物シンチレータをコアとした、バンドル光ファイバー型の光導波シンチレータの開発を実施した。量産に対応する大口径な加熱、延伸装置を用いた、光導波シンチレータのコア径の最小化とシンチレータプレートのタイリングも含めた大口径化の検討を実施した。製造プロセスを確立すべく、数百μｍ径の光導波シンチレータファイバー単線の連続52ｍ長での作製を実施し、数万本のファイバー単線を束ね、再度加熱延伸を行うことで、コア径を7-35μm の範囲で制御したOCS プレートの試作に成功した。湿度～3 ％のドライルーム内での、ドライオイルを使用したワイヤーソー切断を行うことで、シンチレータプレート状への加工が可能であることを確認した。得られたプレートをタイリングすることで２５㎜角のシンチレータプレートの試作まで達成できた。昨年度までに開発したイメージング装置にプレートを組み込み、イメージング試験を実施し、コア径に相当する光導波性能を実証した。さらに、各種シンチレータプレートを用いた、イメージング装置の試作も進め、γ線、X線、ポジトロンを同時に撮像するシステムや、CMOS 画像にビニング技術を実装したα線などの粒子線用の飛跡検出システムの試作も実施した。

Research Progress Status

令和5年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和5年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Kazimierz Wielki University(ポーランド)
  • Country Name: POLAND
  • Counterpart Institution: Kazimierz Wielki University
• [Int'l Joint Research] Academy of Sciences(チェコ)
  • Country Name: CZECH
  • Counterpart Institution: Academy of Sciences
• [Int'l Joint Research] Ludwig Maximilians Universit(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: Ludwig Maximilians Universit
• [Journal Article] Investigation of the phase diagram of the CsI-LiBr system and fabrication of the eutectic scintillator for thermal neutron detection (2024)
  • Author(s): Sasaki Rei、Kamada Kei、Yoshino Masao、Jin Kim Kyoung、Murakami Rikito、Horiai Takahiko、Yamaji Akihiro、Kurosawa Shunsuke、Yokota Yuui、Sato Hiroki、Ohashi Yuji、Hanada Takashi、Yoshikawa Akira
  • Journal Title: Journal of Crystal Growth Volume: 628 Pages: 127543～127543
  • DOI: 10.1016/j.jcrysgro.2023.127543
  • Peer Reviewed
• [Journal Article] Advances in Ce3+ doped YAlO3 single crystal perovskite scintillators through nonstoichiometric engineering (2024)
  • Author(s): Bartosiewicz Karol、Pejchal Jan、Kucerkova Romana、Beitlerova Alena、Babin Vladimir、Vanecek Vojtech、Kurosawa Shunsuke、Kamada Kei、Yoshikawa Akira
  • Journal Title: Optical Materials: X Volume: 22 Pages: 100295～100295
  • DOI: 10.1016/j.omx.2024.100295
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] First Study of the PIKACHU Project: Development and Evaluation of High-Purity Gd3Ga3Al2O12:Ce Crystals for 160Gd Double Beta Decay Searc (2024)
  • Author(s): Takumi Omori, Takashi Iida, Azusa Gando, Keishi Hosokawa, Kei Kamada, Keita Mizukoshi, Yasuhiro Shoji, Masao Yoshino, Ken-Ichi Fushimi, Hisanori Suzuki, Kotaro Takahashi
  • Journal Title: arXiv:2402.06830v1 [physics.ins-det] 9 Feb 2024 Volume: 9 Pages: 1-19
  • Peer Reviewed / Open Access
• [Journal Article] Heat transfer in β-Ga2O3 crystal grown through a skull melting method (2024)
  • Author(s): Kakimoto Koichi、Takahashi Isao、Tomida Taketoshi、Kochurikhin Vladimir V.、Kamada Kei、Nakano Satoshi、Yoshikawa Akira
  • Journal Title: Journal of Crystal Growth Volume: 629 Pages: 127553～127553
  • DOI: 10.1016/j.jcrysgro.2023.127553
  • Peer Reviewed
• [Journal Article] Feasibility study of one-dimensional imaging with an optical fiber for radiation dose-rate monitoring system in the decommissioning process (2024)
  • Author(s): Matsukura Daisuke、Kurosawa Shunsuke、Fujiwara Chihaya、Yamaji Akihiro、Ohashi Yuji、Yokota Yuui、Kamada Kei、Sato Hiroki、Masao Yoshino、Hanada Takashi、Murakami Rikito、Horiai Takahiko、Yoshikawa Akira、Takata Takushi、Tanaka Hiroki
  • Journal Title: Journal of Instrumentation Volume: 19 Pages: C02053～C02053
  • DOI: 10.1088/1748-0221/19/02/C02053
  • Peer Reviewed
• [Journal Article] Effects of crystal growth rate and pressure on shape controllability in the dewetting micro-pulling-down method (2024)
  • Author(s): Murakami Rikito、Oikawa Katsunari、Kamada Kei、Itoi Shiika、Yoshikawa Akira
  • Journal Title: Journal of Crystal Growth Volume: 629 Pages: 127565～127565
  • DOI: 10.1016/j.jcrysgro.2023.127565
  • Peer Reviewed
• [Journal Article] Crystal growth, luminescence, and scintillation properties of Er-doped La2Hf2O7 single crystal (2024)
  • Author(s): Hayashi Naomoto、Yokota Yuui、Horiai Takahiko、Yamanoi Kohei、Yoshino Masao、Yamaji Akihiro、Murakami Rikito、Hanada Takashi、Sato Hiroki、Ohashi Yuji、Kurosawa Shunsuke、Kamada Kei、Sarukura Nobuhiko、Yoshikawa Akira
  • Journal Title: Japanese Journal of Applied Physics Volume: 63 Pages: 03SP15～03SP15
  • DOI: 10.35848/1347-4065/ad1e97
  • Peer Reviewed
• [Journal Article] Development of calculation model for designing temperature characteristics of double-layered thickness-shear resonator (2024)
  • Author(s): Ohashi Yuji、Noguchi Taisei、Yokota Yuui、Murakami Rikito、Kurosawa Shunsuke、Kamada Kei、Horiai Takahiko、Yamaji Akihiro、Yoshino Masao、Yoshikawa Akira
  • Journal Title: Japanese Journal of Applied Physics Volume: 63 Pages: 03SP28～03SP28
  • DOI: 10.35848/1347-4065/ad1fb1
  • Peer Reviewed
• [Journal Article] Relationship of single crystal growth and luminescence properties of Cr-doped gadolinium gallium garnet crystals for radiation dose-rate monitoring systems (2024)
  • Author(s): Matsukura Daisuke、Kurosawa Shunsuke、Yamaji Akihiro、Ohashi Yuji、Yokota Yuui、Kamada Kei、Sato Hiroki、Toyoda Satoshi、Yoshino Masao、Hanada Takashi、Murakami Rikito、Horiai Takahiko、Yoshikawa Akira
  • Journal Title: Journal of Crystal Growth Volume: 630 Pages: 127581～127581
  • DOI: 10.1016/j.jcrysgro.2024.127581
  • Peer Reviewed
• [Journal Article] A triple-imaging-modality system for simultaneous measurements of prompt gamma photons, prompt x-rays, and induced positrons during proton beam irradiation (2024)
  • Author(s): Yamamoto Seiichi、Watabe Hiroshi、Nakanishi Kohei、Yabe Takuya、Yamaguchi Mitsutaka、Kawachi Naoki、Kamada Kei、Yoshikawa Akira、Miyake Masayasu、Tanaka Kazuo S、Kataoka Jun
  • Journal Title: Physics in Medicine & Biology Volume: 69 Pages: 055012～055012
  • DOI: 10.1088/1361-6560/ad25c6
  • Peer Reviewed
• [Journal Article] A comparative study of EM-CCD and CMOS cameras for particle ion trajectory imaging (2024)
  • Author(s): Yamamoto Seiichi、Yoshino Masao、Nakanishi Kohei、Yogo Katsunori、Kamada Kei、Yoshikawa Akira、Kataoka Jun
  • Journal Title: Applied Radiation and Isotopes Volume: 204 Pages: 111143～111143
  • DOI: 10.1016/j.apradiso.2023.111143
  • Peer Reviewed
• [Journal Article] Growth of Mg2Si thermoelectric eutectics by unidirectional solidification (2024)
  • Author(s): Hayashi Naomoto、Yokota Yuui、Horiai Takahiko、Yoshino Masao、Yamaji Akihiro、Murakami Rikito、Hanada Takashi、Sato Hiroki、Ohashi Yuji、Kurosawa Shunsuke、Kamada Kei、Yoshikawa Akira
  • Journal Title: Journal of Crystal Growth Volume: 627 Pages: 127533～127533
  • DOI: 10.1016/j.jcrysgro.2023.127533
  • Peer Reviewed
• [Journal Article] Development of an event-by-event based LiZnS(Ag) neutron imaging detector with selective neutron detection capability (2024)
  • Author(s): Yamamoto Seiichi、Yoshino Masao、Nakanishi Kohei、Kamada Kei、Yoshikawa Akira、Tanaka Hiroki、Kataoka Jun
  • Journal Title: Applied Radiation and Isotopes Volume: 204 Pages: 111084～111084
  • DOI: 10.1016/j.apradiso.2023.111084
  • Peer Reviewed
• [Journal Article] Study of twisting of β-Ga2O3 crystals based on optical absorption and thermal conductivity anisotropy in the crystals grown by the Czochralski method (2024)
  • Author(s): Kakimoto Koichi、Takahashi Isao、Tomida Taketoshi、Kochurikhin Vladimir V.、Kamada Kei、Nakano Satoshi、Yoshikawa Akira
  • Journal Title: Journal of Crystal Growth Volume: 628 Pages: 127550～127550
  • DOI: 10.1016/j.jcrysgro.2023.127550
  • Peer Reviewed
• [Journal Article] Fabrication and Properties for Thermal Neutron Detection of 6LiCl/Rb2CeCl5 Eutectic Scintillator (2024)
  • Author(s): Sasaki Rei、Kamada Kei、Yoshino Masao、Kim Kyoung Jin、Murakami Rikito、Horiai Takahiko、Yamaji Akihiro、Kurosawa Shunsuke、Yokota Yuui、Sato Hiroki、Ohashi Yuji、Hanada Takashi、Yoshikawa Akira
  • Journal Title: Crystals Volume: 14 Pages: 154～154
  • DOI: 10.3390/cryst14020154
  • Peer Reviewed / Open Access
• [Journal Article] Compton Camera Arrangement With a Monolithic LaBr3(Ce) Scintillator and Pixelated GAGG Detector for Medical Imaging (2023)
  • Author(s): Liprandi Silvia、Takyu Sodai、Safari Mohammad、Binder Tim、Dedes George、Kamada Kei、Kawula Maria、Mohammadi Akram、Nishikido Fumihiko、Valencia-Lozano Ingrid I.、Viegas Rita、Yamaya Taiga、Parodi Katia、Thirolf Peter G.
  • Journal Title: IEEE Transactions on Radiation and Plasma Medical Sciences Volume: 7 Pages: 764～774
  • DOI: 10.1109/TRPMS.2023.3282838
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High-toughness/resistivity ruthenium-based refractory alloy wires (2023)
  • Author(s): Murakami Rikito、Kamada Kei、Umetsu Kenichi、Yoshioka Takashi、Oikawa Katsunari、Kido Junji、Yoshikawa Akira
  • Journal Title: International Journal of Refractory Metals and Hard Materials Volume: 114 Pages: 106235～106235
  • DOI: 10.1016/j.ijrmhm.2023.106235
  • Peer Reviewed
• [Journal Article] Development and fabrication of a thick Ti-3H target for the 3H (t,3He) experiment at intermediate energies (2023)
  • Author(s): Miki K.、Utsuki Y.、Hara M.、Hatano Y.、Imai N.、Inoue M.、Itoh M.、Kameya K.、Kitayama S.、Maruta Y.、Matsuda Y.、Saito Y.、Sakai D.、Uesaka T.、Umetsu H.、Urayama R.、Wang J.、Kamada K.、Shoji Y.、Yoshikawa A.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume: 1056 Pages: 168583～168583
  • DOI: 10.1016/j.nima.2023.168583
  • Peer Reviewed
• [Journal Article] The Correlation Between Scatter Detector Performance and Spatial Resolution in a Ring-Shaped Compton Imaging System (2023)
  • Author(s): Takyu Sodai、Tashima Hideaki、Nishikido Fumihiko、Kamada Kei、Yoshikawa Akira、Yamaya Taiga
  • Journal Title: IEEE Transactions on Radiation and Plasma Medical Sciences Volume: 7 Pages: 570～579
  • DOI: 10.1109/TRPMS.2023.3262814
  • Peer Reviewed
• [Journal Article] Sub-micrometer real-time imaging of trajectory of alpha particles using GAGG plate and CMOS camera (2023)
  • Author(s): Yamamoto Seiichi、Yoshino Masao、Nakanishi Kohei、Yogo Katsunori、Kamada Kei、Yoshikawa Akira、Koshikawa Nanase、Kataoka Jun
  • Journal Title: Journal of Instrumentation Volume: 18 Pages: T10003～T10003
  • DOI: 10.1088/1748-0221/18/10/T10003
  • Peer Reviewed
• [Journal Article] Ultrahigh resolution real-time trajectory imaging of neutron induced particles in a scintillator from lithium-6 plate (2023)
  • Author(s): Yamamoto Seiichi、Yoshino Masao、Nakanishi Kohei、Kamada Kei、Yoshikawa Akira、Kataoka Jun
  • Journal Title: Journal of Instrumentation Volume: 18 Pages: T10002～T10002
  • DOI: 10.1088/1748-0221/18/10/T10002
  • Peer Reviewed
• [Journal Article] Growth and Scintillation Properties of 6Li Containing Ce:LaCl3-Based Eutectic Scintillator for Neutron Detection (2023)
  • Author(s): Sasaki Rei、Kim Kyoung Jin、Kamada Kei、Yajima Ryuga、Kutsuzawa Naoko、Yoshino Masao、Murakami Rikito、Horiai Takahiko、Yamaji Akihiro、Kurosawa Shunsuke、Yokota Yuui、Sato Hiroki、Toyoda Satoshi、Ohashi Yuji、Hanada Takashi、Takahashi Isao、Tomida Taketoshi、Kochurikhin Vladimir V.、Yoshikawa Akira
  • Journal Title: IEEE Transactions on Nuclear Science Volume: 70 Pages: 1337～1341
  • DOI: 10.1109/TNS.2023.3271639
  • Peer Reviewed
• [Journal Article] Simultaneous imaging of luminescence and prompt x-rays during irradiation with spot-scanning proton beams at clinical dose level (2023)
  • Author(s): Yamamoto Seiichi、Yamashita Tomohiro、Kobashi Yusuke、Yabe Takuya、Akagi Takashi、Yamaguchi Mitsutaka、Kawachi Naoki、Kamada Kei、Yoshikawa Akira、Kataoka Jun
  • Journal Title: Biomedical Physics & Engineering Express Volume: 9 Pages: 045031～045031
  • DOI: 10.1088/2057-1976/acdf61
• [Journal Article] Crucible-Free Growth of Bulk b-Ga2O3 Single-Crystal Scintillator under Oxidizing Atmosphere (2023)
  • Author(s): Kamada Kei、Sasaki Rei、Tomida Taketoshi、Takahashi Isao、Yoshino Masao、Horiai Takahiko、Murakami Rikito、Kochurikhin Vladimir、Shoji Yasuhiro、Kakimoto Koichi、Yoshikawa Akira
  • Journal Title: Crystals Volume: 13 Pages: 921～921
  • DOI: 10.3390/cryst13060921
  • Peer Reviewed / Open Access
• [Journal Article] A high-resolution real-time imaging system for observing the trajectories of neutron induced particles in a scintillator (2023)
  • Author(s): Yamamoto Seiichi、Yoshino Masao、Nakanishi Kohei、Kamada Kei、Yoshikawa Akira、Kataoka Jun
  • Journal Title: Journal of Instrumentation Volume: 18 Pages: T06009～T06009
  • DOI: 10.1088/1748-0221/18/06/T06009
• [Journal Article] Hybrid imaging of prompt x-rays and induced positrons using a pinhole gamma camera during and after irradiation of protons (2023)
  • Author(s): Yamamoto Seiichi、Watabe Hiroshi、Nakanishi Kohei、Yabe Takuya、Yamaguchi Mitsutaka、Kawachi Naoki、Kamada Kei、Yoshikawa Akira、Islam Md Rafiqul、Miyake Masayasu、Tanaka Kazuo S、Kataoka Jun
  • Journal Title: Physics in Medicine & Biology Volume: 68 Pages: 115015～115015
  • DOI: 10.1088/1361-6560/acd2a2
  • Peer Reviewed
• [Journal Article] Development of an ultrahigh resolution real time alpha particle imaging system for observing the trajectories of alpha particles in a scintillator (2023)
  • Author(s): Yamamoto Seiichi、Yoshino Masao、Kamada Kei、Yajima Ryuga、Yoshikawa Akira、Nakanishi Kohei、Kataoka Jun
  • Journal Title: Scientific Reports Volume: 13 Pages: -
  • DOI: 10.1038/s41598-023-31748-9
  • Peer Reviewed / Open Access
• [Journal Article] Prompt X-ray imaging during irradiation with spread-out Bragg peak (SOBP) beams of carbon ions (2023)
  • Author(s): Yamamoto Seiichi、Yabe Takuya、Akagi Takashi、Yamaguchi Mitsutaka、Kawachi Naoki、Kamada Kei、Yoshikawa Akira、Kataoka Jun
  • Journal Title: Physica Medica Volume: 109 Pages: 102592～102592
  • DOI: 10.1016/j.ejmp.2023.102592
  • Peer Reviewed
• [Journal Article] Bulk Single-Crystal Growth of Ce/Gd3(Al,Ga)5O12 from Melt without a Precious Metal Crucible by Pulling from a Cold Container (2023)
  • Author(s): Akira Yoshikawa、Vladimir Kochurikhin、Masao Yoshino、Rikito Murakami、Taketoshi Tomida、Isao Takahashi、Takahiko Horiai、Kei Kamada、Yasuhiro Shoji、Hiroki Sato、Romana Kucerkova、Alena Beitlerova、Martin Nikl
  • Journal Title: Crystal Growth & Design Volume: 23 Pages: 2048～2054
  • DOI: 10.1021/acs.cgd.2c00951
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simultaneous multi-nuclide imaging via reconstruction-free double-photon emission coincidence imaging method with parallel hole collimator and slat collimator (2023)
  • Author(s): Yan Linlin、Uenomachi Mizuki、Ueki Taisei、Kim Donghwan、Shimazoe Kenji、Takahashi Hiroyuki、Kamada Kei、Shigekawa Yudai、Nambu Akihiro、Yin Xiaojie、Wang Yang、Haba Hiromitsu
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume: 1053 Pages: 168305～168305
  • DOI: 10.1016/j.nima.2023.168305
  • Peer Reviewed
• [Journal Article] Prototype fabrication of optical-guiding Tl:CsI crystal scintillators and investigation of the crystallization process (2023)
  • Author(s): Yajima Ryuga、Kamada Kei、Murakami Rikito、Kutsuzawa Naoko、Sasaki Rei、Yoshino Masao、Horiai Takahiko、Kim Kyoung Jin、Kochurikhin Vladimir. V.、Yamaji Akihiro、Kurosawa Shunsuke、Yokota Yuui、Sato Hiroki、Toyoda Satoshi、Ohashi Yuji、Hanada Takashi、Yoshikawa Akira
  • Journal Title: Japanese Journal of Applied Physics Volume: 62 Pages: SC1064～SC1064
  • DOI: 10.35848/1347-4065/acb3d1
  • Peer Reviewed / Open Access
• [Journal Article] Novel optical-guiding crystal scintillator composed of an Eu-doped SrI2 core and glass cladding (2023)
  • Author(s): Yajima Ryuga、Kamada Kei、Takizawa Yui、Kutsuzawa Naoko、Sasaki Rei、Yoshino Masao、Horiai Takahiko、Murakami Rikito、Kim Kyoung Jin、Kochurikhin Vladimir V.、Yamaji Akihiro、Kurosawa Shunsuke、Yokota Yuui、Sato Hiroki、Toyoda Satoshi、Ohashi Yuji、Takashi Hanada、Yoshikawa Akira
  • Journal Title: Ceramics International Volume: 49 Pages: 41259～41263
  • DOI: 10.1016/j.ceramint.2022.12.264
  • Peer Reviewed / Open Access
• [Journal Article] Development and x-ray imaging performance of Tb-doped GdAlO3-αAl2O3 submicron-diameter phase-separated scintillator fibers (2023)
  • Author(s): Yoshino M.、Kamada K.、Yamamoto S.、Yajima R.、Sasaki R.、Sagisaka M.、Kataoka J.、Horiai T.、Yokota Y.、Yoshikawa A.
  • Journal Title: AIP Advances Volume: 13 Pages: -
  • DOI: 10.1063/5.0136069
  • Peer Reviewed
• [Presentation] 光導波型シンチレータの組織制御および大口径化の検討 (2023)
  • Author(s): 鎌田 圭、沓澤 直子、薄 善行、佐々木 玲、吉野 将生、白紙 悠之、堀合 毅彦、村上 力輝斗、吉川 彰
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] 169Yb の角度相関の測定と磁場応答の研究 (2023)
  • Author(s): 封 博宇、島添 健次、上ノ町 水紀、高橋 浩之、重河 優大、鎌田 圭、南部 明弘、羽場 宏光、富田 英生、朱 慶紅、金 東煥
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] Pr3+添加 (La, Y)2Si2O7バルク単結晶の光学およびシンチレーション特性 (2023)
  • Author(s): 阿部 柚佳、堀合 毅彦、横田 有為、吉野 将生、村上 力輝斗、花田 貴、山路 晃広、佐藤 浩樹、大橋 雄二、黒澤 俊介、鎌田 圭、吉川 彰
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] 高感度・高分解能X線イメージング応用に向けたCeCl3/NaCl/SrCl2共晶体シンチレータの開発 (2023)
  • Author(s): 鎌田 圭、沓澤 直子、佐々木 玲、吉野 将生、堀合 毅彦、村上 力輝斗、山路 晃広、吉川 彰
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] スカルメルテイング法による CZ-Ga2O3単結晶成長時の流動解析 (2023)
  • Author(s): 柿本 浩一、高橋 勲、富田 健稔、Vladimir Kochurikhin、鎌田 圭、中野 智、吉川 彰
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] ルツボレスで作製したβ-Ga2O3結晶の成長方位依存性 (2023)
  • Author(s): 高橋 勲、Vladimir Kochurikhin、富田 健稔、菅原 孝昌、庄子 育宏、鎌田 圭、柿本 浩一、吉川 彰
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] 垂直ブリッジマン成長時における高指数面成長 Ga2O3の転位密度解析 (2023)
  • Author(s): 柿本 浩一、高橋 勲、富田 健稔、鎌田 圭、Vladimir Kochurikhin、中野 智、姚 永昭、石川 由加里、吉川 彰
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] 超音波照射によるカスケード核種の角度相関変化を利用した位置分解 (2023)
  • Author(s): 玉井 良樹、上ノ町 水紀、島添 健次、鎌田 圭、富田 英生、石島 歩
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] 近赤外発光シンチレータの廃炉用放射線量率モニタリングシステムへの適用の検討 (2023)
  • Author(s): 松倉 大佑、黒澤 俊介、山路 晃広、大橋 雄二、横田 有為、鎌田 圭、佐藤 浩樹、吉野 将生、花田 貴、村上 力輝斗、堀合 毅彦、吉川 彰、田中 浩基、高田 卓志
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] X線イメージング用Ce添加(Gd, Y, Tb)3Ga3Al2O12シンチレータの結晶成長および光学特性 (2023)
  • Author(s): 大室 和也、吉野 将生、鎌田 圭、金 敬鎭、堀合 毅彦、村上 力輝斗、山路 晃広、花田 貴、横田 有為、黒澤 俊介、大橋 雄二、佐藤 浩樹、吉川 彰
  • Organizer: 2023年 第84回 応用物理学会 秋季学術講演会
• [Presentation] 2元系および3元系共晶体構造を利用した機能性シンチレータ材料の開発 (2023)
  • Author(s): 鎌田圭，佐々木玲，沓澤直子，吉野将生，堀合毅彦， 村上力輝斗，薄善行， Kyoung Jin Kim，Vladimir. V. Kochurikhin，吉川彰
  • Organizer: 第52回結晶成長国内会議（JCCG-52）
  • Invited
• [Presentation] スカルメルテイング法によるCZ-Ga2O3 単結晶成長時の流動解析 (2023)
  • Author(s): 柿本浩一，高橋 勲，富田 健稔，鎌田圭，中野智，吉川彰，Vladimir V. Kochurikhin
  • Organizer: 第52回結晶成長国内会議（JCCG-52）
• [Presentation] スカルメルト法を応用したOCCC法によるタンタル酸リチウム単結晶の大気雰囲気下での結晶育成と特性評価 (2023)
  • Author(s): 富田健稔，高橋勲， Vladimir Kochurikhin，庄子育宏，佐藤浩樹，大橋雄 二，鎌田圭，柿本浩一，吉川彰
  • Organizer: 第52回結晶成長国内会議（JCCG-52）
• [Presentation] 熱中性子検出用LiCl/RbCl/CeCl3共晶シンチレータの育成と中性子応答評価 (2023)
  • Author(s): 佐々木玲，鎌田圭，吉野将生，堀合毅彦，村上力輝斗，Kyoung Jin Kim，山路晃広，黒澤俊介，横田有為，佐藤浩樹，大橋雄二，花田貴， 吉川彰
  • Organizer: 第52回結晶成長国内会議（JCCG-52）
• [Presentation] Wるつぼを使用したマイクロ引き下げ法によるEu3+添加(Y, Lu)ScO3の結晶育成 (2023)
  • Author(s): 阿部柚佳，堀合毅彦，横田有為，吉野将生，村上力輝斗，花田貴，山路晃広，佐藤浩樹，大橋雄二，黒澤俊介，鎌田圭，吉川彰
  • Organizer: 第52回結晶成長国内会議（JCCG-52）
• [Presentation] Relationship of Single Crystal Growth and Luminescence Properties of Cr-dopedGadolinium Gallium Garnet Crystals for Radiation Dose-Rate Monitoring Systems (2023)
  • Author(s): Daisuke. Matsukura, Shunsuke. Kurosawa, Akihiro. Yamaji, Yuji. Ohashi,Yuui. Yokota, Kei. Kamada, Hiroki. Sato, Satoshi. Toyoda, Masao. Yoshino, Takashi. Hanada, Rikito. Murakami, Takahiko. Horiai, Akira. Yoshikawa
  • Organizer: The International Conference on Crystal Growth and Epitaxy-ICCGE-20
  • Int'l Joint Research
• [Presentation] Effect of oxygen concentration during growth on crystalline quality of b-Ga 2 O 3 crystals grown by crucible free growth techniques (2023)
  • Author(s): Isao Takahashi, Vladimir Kochurikhin , Takahiko Horiai, Taketoshi Tomida , Takamasa Sugawara , Kei Kamada, Koichi Kakimoto and Akira Yoshikawa
  • Organizer: The International Conference on Crystal Growth and Epitaxy-ICCGE-20
  • Int'l Joint Research
• [Presentation] Numerical analysis of heat and mass transfer of Ga2O3 grown by skull melting method (2023)
  • Author(s): Koichi Kakimoto, Isao Takahashi, Taketoshi Tomida, Yusuke Kida, Kei Kamada, Satoshi Nakano, Akira Yoshikawa,
  • Organizer: The International Conference on Crystal Growth and Epitaxy-ICCGE-20
  • Int'l Joint Research
• [Presentation] Oxide Crystal growth from Cold Crucible;Ce doped Gd 3 (Al,Ga) 5 O 12 and β-Ga 2 O 3 as examples (2023)
  • Author(s): Akira Yoshikawa, Isao Takahash, Vladimir Kochurikhin, Taketoshi Tomida, Takahiko Horiai, Masao Yoshino, Rikito Murakami, Yasuhiro Shoji, Kei Kamada, Koichi Kakimoto
  • Organizer: The International Conference on Crystal Growth and Epitaxy-ICCGE-20
  • Int'l Joint Research
• [Presentation] Investigation of the phase diagram of the CsI-LiBr system and fabrication of the eutectic scintillator for thermal neutron detection (2023)
  • Author(s): Rei Sasaki, Kei Kamada, Masao Yoshino, Kyoung Jin Kim, Rikito Murakami, Takahiko Horiai, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Yuji Ohashi, Takashi Hanada, Akira Yoshikawa
  • Organizer: The International Conference on Crystal Growth and Epitaxy-ICCGE-20
• [Presentation] Development and material design of structured scintillators for high resolution radiation imaging and thermal neutron detection (2023)
  • Author(s): Kei Kamada, Rei Sasaki, Naoko Kutsuzawa, Masao Yoshino, Yuji Shirakami, Yoshiyuki Usuki, Takahiko Horiai, and Akira Yoshikawa
  • Organizer: Development of Materials Science in Research and Education
  • Int'l Joint Research / Invited
• [Presentation] Single crystal gowth of Ru-Mo-W-Re alloy wire by the dewetting micro-pulling-down method (2023)
  • Author(s): Rikito Murakami, Shiika Itoi, Kotaro Yonemura, Kei Kamada, and Akira Yoshikawa
  • Organizer: Development of Materials Science in Research and Education
  • Int'l Joint Research
• [Presentation] Composition Dependence of Resistivity of Ru-Mo-W ternary system and single crystal wire growth by the dewetting micro-pulling-down method (2023)
  • Author(s): Kotaro Yonemura, Rikito Murakami, Shiika Itoi, Kei Kamada, Takahiko Horiai, Takashi Hanada, Akihiro Yamaji, Masao Yoshino, Hiroki Sato, Yuji Ohashi, Shunsuke Kurosawa, Yuui Yokota, and Akira Yoshikawa
  • Organizer: Development of Materials Science in Research and Education
  • Int'l Joint Research
• [Presentation] Crystal Growth and Optical Properties of Ce-doped (Y, Tb)3Al2Ga3O12 and (Gd, Tb)3Al2Ga3O12 Scintillators (2023)
  • Author(s): Kazuya Omuro, Masao Yoshino, Kei Kamada, Kyoung Jin Kim, Takahiko Horiai, Rikito Murakami, Akihiro Yamaji, Takashi Hanada, Yuui Yokota, Shunsuke Kurosawa, Yuji Ohashi, Hiroki Sato, and Akira Yoshikawa
  • Organizer: Development of Materials Science in Research and Education
  • Int'l Joint Research
• [Presentation] Crystal growth of Eu-doped (Y, Lu)ScO3 by micro-pulling-down method using W crucible (2023)
  • Author(s): Yuka Abe, Takahiko Horiai, Yuui Yokota, Masao Yoshino, Rikito Murakami, Takashi Hanada, Akihiro Yamaji, Hiroki Sato, Yuji Ohashi, Shunsuke Kurosawa, Kei Kamada, and Akira Yoshikawa
  • Organizer: Development of Materials Science in Research and Education
  • Int'l Joint Research
• [Presentation] Development of a novel crucible free crystal growth technology andgrowth of 2 inch size b-Ga2O3 single crystal scintillator (2023)
  • Author(s): K. Kamada R. Sasaki, T. Tomida, I. Takahashi, M. Yoshino, R. Murakami, T. Horiai, V. Kochurikhin, Y. Shoji, K. Kakimoto, A. Yoshikawa
  • Organizer: 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference
  • Int'l Joint Research
• [Presentation] Development of an ultrahigh resolution real time alpha particle imaging system for observing the trajectories in a scintillator and its applications (2023)
  • Author(s): S. Yamamoto, M. Yoshino, K. Kamada, R. Yajima, A. Yoshikawa, K. Nakanishi, J. Kataoka
  • Organizer: 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference
  • Int'l Joint Research
• [Presentation] Development of Red-Light Oxide-Scintillators and Evaluation of the Dose Rate Monitoring System for the Decommissioning (2023)
  • Author(s): D. Matsukura, S. Kurosawa, A. Yamaji, Y. Ohashi, Y. Yokota, K. Kamada, H. Sato, M. Yoshino, T. Hanada, R. Murakami, T. Horiai, A. Yoshikawa, H. Tanaka, T. Takata
  • Organizer: 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference
  • Int'l Joint Research
• [Presentation] Development of the 4th Whole Gamma Imaging Prototype for 89Zr Mouse Imaging Demonstration (2023)
  • Author(s): G. Akamatsu, E. Yoshida, S. Ito, H. Tashima, H. G. Kang, S. Takyu, F. Nishikido, F. Obata, M. Kiyokawa, H. Wakizaka, K.J. Kim, K. Kamada, A. Yoshikawa, M. Takahashi, T. Yamaya
  • Organizer: 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference
  • Int'l Joint Research
• [Presentation] In vivo simultaneous imaging of 18F-FDG and Na131I with Compton PET system (2023)
  • Author(s): D. Kim, L. Yan, K. Shimazoe, H. Takahashi, K. Ogane, M. Yoshino, K. Kamada, M. Uenomachi
  • Organizer: 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference
  • Int'l Joint Research
• [Presentation] Angular Correlation Measurement with Compton-PET for Information on Local Environment (2023)
  • Author(s): D. Kim, M. Uenomachi, K. Shimazoe, H. Takahashi, K. Kamada, H. Tomita
  • Organizer: 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference
  • Int'l Joint Research
• [Presentation] Development of a GAGG prompt gamma camera and simultaneous imaging with prompt X-rays during irradiation by proton beams at clinical dose level (2023)
  • Author(s): S. Yamamoto, T. Yamashita, Y. Kobashi, T. Yabe, K. Nakanishi, T. Akagi, M. Yamaguchi, N. Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka
  • Organizer: 2023 IEEE Nuclear Science Symposium and Medical Imaging Conference
  • Int'l Joint Research
• [Presentation] Development of novel eutectic scintillators for thermal neutron detection (2023)
  • Author(s): Kei Kamada, Ryuga Yajima, Rei Sasaki, Masao Yoshino, Kyoung Jin Kim, Vladimir. V. Kochurikhin, Akira Yoshikawa
  • Organizer: DSEC VII ; Directionally Solidified Eutectics Conference
  • Int'l Joint Research
• [Presentation] Fabrication and evaluation of LiCl/Rb2CeCl5 scintillator for thermal neutron detection (2023)
  • Author(s): Rei Sasaki, Kei Kamada, Ryuga Yajima, Kyoung Jin Kim, Naoko Kutsuzawa, Masao Yoshino Rikito Murakami, Takahiko Horiai, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Vladimir. V. Kochurikhin and Akira Yoshikawa
  • Organizer: DSEC VII ; Directionally Solidified Eutectics Conference
  • Int'l Joint Research
• [Presentation] Growth and scintillation properties of LaCl3/6LiCl /SrCl2 ternary eutectic for thermal neutron detection (2023)
  • Author(s): Rei Sasaki, Kei Kamada, Ryuga Yajima, Kyoung Jin Kim, Naoko Kutsuzawa, Masao Yoshino Rikito Murakami, Takahiko Horiai, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Vladimir. V. Kochurikhin and Akira Yoshikawa
  • Organizer: 9th International Symposium on Optical Materials (IS-OM'9)
  • Int'l Joint Research
• [Presentation] Demonstration of Dose Rate Monitoring System with Garnet-Type Scintillators (2023)
  • Author(s): Daisuke Matsukura, Masao Yoshino Rikito Murakami, Takahiko Horiai, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Kei Kamada and Akira Yoshikawa
  • Organizer: 9th International Symposium on Optical Materials (IS-OM'9)
  • Int'l Joint Research
• [Presentation] Crystal Growth and Optical Properties of Ce-doped (Gd, Y, Tb)3Ga3Al2O12 Scintillators for X-ray Imaging, (2023)
  • Author(s): Kazuya Omuro, Kyoung Jin Kim, Masao Yoshino Rikito Murakami, Takahiko Horiai, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Kei Kamada and Akira Yoshikawa
  • Organizer: 9th International Symposium on Optical Materials (IS-OM'9)
  • Int'l Joint Research
• [Presentation] Luminescence and scintillation properties of Tb,Ce co-doped (Gd,La)2Si2O7 for radiation imaging (2023)
  • Author(s): Rikito Murakami, Masao Yoshino, Takahiko Horiai, Kei Kamada and Akira Yoshikawa
  • Organizer: 9th International Symposium on Optical Materials (IS-OM'9)
  • Int'l Joint Research
• [Presentation] Optical and Scintillation Properties of Pr3+ -Doped (La, Y)2Si2O7 Single Crystals (2023)
  • Author(s): Yuka Abe, Masao Yoshino Rikito Murakami, Takahiko Horiai, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Kei Kamada and Akira Yoshikawa
  • Organizer: 9th International Symposium on Optical Materials (IS-OM'9)
  • Int'l Joint Research
• [Presentation] A novel CeCl3/NaCl/SrCl2 ternary eutectic scintillator for fast and high resolution radiation imaging applications (2023)
  • Author(s): Kei Kamada, Rei Sasaki, Kyoung Jin Kim Naoko Kutsuzawa, Masao Yoshino, Rikito Murakami, Takahiko Horiai, and Akira Yoshikawa
  • Organizer: 9th International Symposium on Optical Materials (IS-OM'9)
  • Int'l Joint Research / Invited
• [Patent(Industrial Property Rights)] 製造装置及び製造方法 (2024)
  • Inventor(s): 吉川 彰、鎌田 圭、柿本 浩一
  • Industrial Property Rights Holder: 吉川 彰、鎌田 圭、柿本 浩一
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: PCT/JP/2024/6897
  • Overseas
• [Patent(Industrial Property Rights)] 製造装置及び製造方法 (2024)
  • Inventor(s): 吉川 彰、鎌田 圭、柿本 浩一
  • Industrial Property Rights Holder: 吉川 彰、鎌田 圭、柿本 浩一
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: PCT/JP/2024/6896
  • Overseas
• [Patent(Industrial Property Rights)] 結晶成長方法および装置 (2023)
  • Inventor(s): 吉川 彰、鎌田 圭、庄子 育宏、他4名
  • Industrial Property Rights Holder: 吉川 彰、鎌田 圭、庄子 育宏、他4名
  • Industrial Property Rights Type: 特許
  • Patent Publication Number: 特開2023-122837
• [Patent(Industrial Property Rights)] 結晶製造方法、高周波加熱装置、及び結晶製造装置 (2023)
  • Inventor(s): 吉川 彰、鎌田 圭
  • Industrial Property Rights Holder: 吉川 彰、鎌田 圭
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: PCT/JP2023/038408
  • Overseas
• [Patent(Industrial Property Rights)] 光ファイバー発光体の作製方法 (2023)
  • Inventor(s): 鎌田 圭、矢島 隆雅、村上 力輝斗、吉川 彰
  • Industrial Property Rights Holder: 鎌田 圭、矢島 隆雅、村上 力輝斗、吉川 彰
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: PCT/JP2022/026525
  • Overseas
• [Patent(Industrial Property Rights)] 金属部材および製品 (2023)
  • Inventor(s): 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Holder: 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2023-208246
• [Patent(Industrial Property Rights)] 金属部材および製品 (2023)
  • Inventor(s): 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Holder: 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2023-208247
• [Patent(Industrial Property Rights)] 金属部材および製品 (2023)
  • Inventor(s): 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Holder: 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2023-208249
• [Patent(Industrial Property Rights)] 金属部材および製品 (2023)
  • Inventor(s): 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Holder: 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2023-208251
• [Patent(Industrial Property Rights)] 金属部材および製品 (2023)
  • Inventor(s): 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Holder: 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2023-2082512
• [Patent(Industrial Property Rights)] 処理装置および方法 (2023)
  • Inventor(s): 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Holder: 吉川 彰、村上 力輝斗、鎌田 圭
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2023-195964
• [Patent(Industrial Property Rights)] 結晶材料、シンチレータ、および放射線検出器 (2023)
  • Inventor(s): 横田 有為、須田 貴裕、吉野 将生、鎌田 圭、他2名
  • Industrial Property Rights Holder: 横田 有為、須田 貴裕、吉野 将生、鎌田 圭、他2名
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: PCT/JP2023/020646
  • Overseas
• [Patent(Industrial Property Rights)] 組成物、及び、抵抗発熱体 (2023)
  • Inventor(s): 村上 力輝斗、鎌田 圭、吉川 彰
  • Industrial Property Rights Holder: 村上 力輝斗、鎌田 圭、吉川 彰
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: PCT/JP2023/038229
  • Overseas