Investigation of the mechanism on nuclear excitation by electron transition and its application

• Project/Area Number: 20340061
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: KISHIMOTO Shunji High Energy Accelerator Research Organization, 物質構造科学研究所, 准教授 (00195231)
• Co-Investigator(Renkei-kenkyūsha): FUJIMOTO Hiroyuki 独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (30357917)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000); Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2009: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000); Fiscal Year 2008: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
• Keywords: 原子核(実験) / 原子核励起 / NEET / 軌道電子遷移 / 放射光 / X線 / アバランシェ・ダイオード / 内部転換電子

Research Abstract

We have precisely observed nuclear excitation by electron transition (NEET) on ^<197>Au and ^<193>Ir to investigate the NEET mechanism and its application. New fast silicon avalanche diode (Si-AD) array detectors and a time spectroscopy system without a dead time region were developed for the NEET experiments. The system improved the efficiency for taking the NEET events. From the experimental results, we then confirmed our NEET model depending on the incident X-ray energy.

Research Products

• [Journal Article] Timing measurements with a MSM photodetector sensitive to a single X-ray photon (2011)
  • Author(s): S.Kishimoto, T.Taniguchi, F.Nishikido, R.Haruki
  • Journal Title: KEK Proceedings(他、研究成果(1)の(1)について2件を執筆中。) (accepted)
  • Peer Reviewed
• [Presentation] イリジウム193のK-NEET端観測と励起準位精密測定 (2011)
  • Author(s): 岸本俊二
  • Organizer: 日本物理学会第66回年次大会(震災のため中止、講演は成立の扱い)
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] イリジウム193のK-NEET端観測と励起準位精密測定 (2011)
  • Author(s): 岸本俊二
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学(震災のため中止、講演は成立の扱い)
  • Year and Date: 2011-03-26
• [Presentation] 金197のK-NEET端観測と励起準位精密測定 (2010)
  • Author(s): 岸本俊二
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-21
• [Presentation] Observation of Nuclear Excitation by Electron Transition using Synchrotron X-rays (invited) (2009)
  • Author(s): 岸本俊二
  • Organizer: Workshop on Atomic Effects in Nuclear Excitation and Decay (European Center for Theoretical Studies in Nuclear Physics and Related Areas)
  • Place of Presentation: Trento, Italy
  • Year and Date: 2009-06-15
• [Presentation] Observation of Nuclear Excitation by Electron Transition using Synchrotron X-rays (2009)
  • Author(s): Shunji Kishimoto
  • Organizer: Workshop on Atomic Effects in Nuclear Excitation and Decay
  • Place of Presentation: European Center for Theoretical Studies in Nuclear Physics and Related Areas, Trento, Italy
  • Year and Date: 2009-06-15
• [Presentation] MSMフォトディテクタによる単一X線のタイミング検出 (2009)
  • Author(s): 岸本俊二
  • Organizer: 第64回日本物理学会年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] MSMフォトディテクタによる単一X線・電子線のタイミング検出とNEET 実験への応用 (2008)
  • Author(s): 岸本俊二
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-21
• [Presentation] MSMフォトディテクタによる単一X線・電子線のタイミング検出とNEET実験への応用 (2008)
  • Author(s): 岸本俊二
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-21