Organic optically-stimulable photphors equivalent to biological tissue

• Project/Area Number: 25630427
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering
• Research Institution: Tohoku University
• Principal Investigator: KOSHIMIZU Masanori 東北大学, 工学(系)研究科(研究院), 准教授 (40374962)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 線量計 / 輝尽蛍光 / 熱蛍光 / 有機無機ハイブリッド / 生体等価 / プラスチック / トラップ

Outline of Final Research Achievements

We aim at developing optically-stimulable phosphors composed mainly of organic materials to achieve biological tissue-equivalent response for ionizing radiation. We have developed phosphors based on organic-inorganic hybrid materials using two methods: one is sol-gel method, and the other is the synthesis of surface-modificed nanoparticles in supercritical water followed by hybridization of the nanoparticles with polymers. For two synthesis methods, we successfully fabricated transparent organic-inorganic hybrid phosphors.

Research Products

• [Journal Article] Enhanced Detection Efficiency of Plastic Scintillators upon Incorporation of Zirconia Nanoparticles (2015)
  • Author(s): Yuki Araya, Masanori Koshimizu, Rie Haruki, Fumihiko Nishikido, Shunji Kishimoto and Keisuke Asai
  • Journal Title: Sensors and Materials Volume: 27 Pages: 255-261
  • Peer Reviewed
• [Journal Article] High-energy X-ray detection by hafnium-doped organic-inorganic hybrid scintillators prepared by sol-gel method (2014)
  • Author(s): Yan Sun, Masanori Koshimizu, Natsuna Yahaba, Fumihiko Nishikido, Shunji Kishimoto, Rie Haruki and Keisuke Asai
  • Journal Title: Applied Physics Letters Volume: 104
  • Peer Reviewed
• [Presentation] プラスチックシンチレータへの添加を目的とした有機修飾ハフニアナノ粒子の作製 (2015)
  • Author(s): 平田 智之、野口 多紀郎、相田 努、高見 誠一、阿尻 雅文、越水 正典、藤本 裕、柳田 健之、錦戸 文彦、春木 理恵、岸本 俊二、浅井 圭介
  • Organizer: 化学工学会第８０年会
  • Place of Presentation: 芝浦工業大学（東京）
  • Year and Date: 2015-03-19 – 2015-03-21
• [Presentation] 中性子検出用Li含有型プラスチックシンチレータの開発 (2015)
  • Author(s): 小田切 泰海、越水 正典、藤本 裕、柳田 健之、浅井 圭介
  • Organizer: 第６２回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学湘南平塚キャンパス（平塚）
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] ハフニアナノ粒子含有プラスチックシンチレータのX線検出特性 (2015)
  • Author(s): 平田 智之、野口 多紀郎、越水 正典、岸本 俊二、春木 理恵、錦戸 文彦、柳田 健之、藤本 裕、相田 努、高見 誠一、阿尻 雅文、浅井 圭介
  • Organizer: 第６２回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学湘南平塚キャンパス（平塚）
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] Hfナノ粒子含有プラスチックシンチレータの高エネルギーX線検出特性評価 (2015)
  • Author(s): 近野 唯、越水 正典、錦戸 文彦、春木 理恵、岸本 俊二、柳田 健之、藤本 裕、孫 彦、浅井 圭介
  • Organizer: 第６２回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学湘南平塚キャンパス（平塚）
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] Development of Li-loaded plastic scintillators for neutron detection (2015)
  • Author(s): Yasumi Odagiri, Masanori Koshimizu, Yutaka Fujimoto, Takayuki Yanagida, Keisuke Asai
  • Organizer: The 10th International Workshop on Ionizing Radiation Monitoring
  • Place of Presentation: Technol Convention Center, Hosoda Hall （大洗）
  • Year and Date: 2015-02-28 – 2015-03-02
• [Presentation] High-energy X-ray detection capability of Hf-nanoparticle-loaded plastic scintillators synthesized by sol-gel method (2015)
  • Author(s): Yui Konno, Masanori Koshimizu, Fumihiko Nishikido, Rie Haruki, Shunji Kishimoto, Takayuki Yanagida, Yutaka Fujimoto, Yan Sun, Keisuke Asai
  • Organizer: The 10th International Workshop on Ionizing Radiation Monitoring
  • Place of Presentation: Technol Convention Center, Hosoda Hall （大洗）
  • Year and Date: 2015-02-28 – 2015-03-02
• [Presentation] X-Ray detection properties of plastic scintillators loaded with supercritical water synthesized HfO2 nanoparticles (2015)
  • Author(s): Tomoyuki Hirata, Takio Noguchi, Masanori Koshimizu, Shunji Kishimoto, Rie Haruki, Fumihiko Nishikido, Takayuki Yanagida, Yutaka Fujimoto, Tsutomu Aida, Seiichi Takami, Tadafumi Adschiri, Keisuke Asai
  • Organizer: The 10th International Workshop on Ionizing Radiation Monitoring
  • Place of Presentation: Technol Convention Center, Hosoda Hall （大洗）
  • Year and Date: 2015-02-28 – 2015-03-02