Investigation of particle acceleration mechanism by an observation of solar neutrons and gamma rays

• Project/Area Number: 20740145
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Waseda University
• Principal Investigator: HAREYAMA Makoto Waseda University, 月・惑星探査プログラムグループ, 研究員 (60327286)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 宇宙線 / 地球放射線帯 / 太陽エネルギー粒子 / 磁気圏 / 太陽高エネルギー粒子 / 粒子計 / 測技術 / 太陽物理学 / 放射線,X線,粒子線 / 粒子計測技術

Research Abstract

A prototype detector for solar gamma rays and neutrons are developed and investigate its characteristics. The detector is construct of a unity with plastic and LiI scintillators and a Photomultiplier tube. Gamma-ray, neutron and charged particle (cosmic ray) can be distinguished by differences of light emission due to decay time of each scintillator and particle reaction in the scintillators. The energy resolution of gamma-ray is about 11% at 661keV. An energy spectrum of neutrons from a radioactive source from 1 to 8 MeV is consistent with a simulation result taking the detector construction into account.

Research Products

• [Presentation] 太陽探査宇宙船「Interhelois」搭載の太陽中性子・γ線検出器の開発 (2009)
  • Author(s): 長谷部信行, 晴山慎, 他
  • Organizer: 第56回応用物理学関係連合講演会
  • Place of Presentation: 筑波大学
  • Year and Date: 2009-04-01
• [Presentation] 太陽探査宇宙船「Interhelois]搭載の太陽中性子・γ線検出器の開発 (2009)
  • Author(s): 長谷部信行, 晴山慎, 他
  • Organizer: 第56回応用物理学関係連合講演会
  • Place of Presentation: 筑波大学
  • Year and Date: 2009-04-01
• [Presentation] Interhelios太陽観測宇宙船による太陽中性子・ガンマ線の観測計画3 (2009)
  • Author(s): 晴山慎, 長谷部信行, 他
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-30
• [Presentation] 太陽探査機"Inter HELIOS"に搭載するγ線・中性子検出器の開発 (2009)
  • Author(s): 益山直樹、晴山慎, 他
  • Organizer: 研究会「放射線検出器とその応用」(第23回)
  • Place of Presentation: 高エネルギー加速器研究機構
  • Year and Date: 2009-01-29
• [Remarks] ホームページ等