Development of experimental techniques for spectroscopy of unbound nuclear states with spin polarization

• Project/Area Number: 15K05106
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kyushu University
• Principal Investigator: TERANISHI Takashi 九州大学, 理学研究院, 准教授 (10323495)
• Co-Investigator(Renkei-kenkyūsha): SAKAGUCHI Satoshi 九州大学, 大学院理学研究院, 准教授 (70569566)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 共鳴散乱 / RIビーム / スピン偏極 / 偏極陽子標的 / 不安定核 / 共鳴状態 / 陽子共鳴散乱 / CsI (Tl)シンチレーション検出器 / 非束縛核

Outline of Final Research Achievements

Proton resonant scattering is one of useful experimental tools in nuclear physics. Recent development of low-energy RI beams (secondary beams of unstable nuclei) allows us to study proton resonant scattering on unstable nuclei. We are aiming at developing a new technique of “spin polarized proton resonant scattering in inverse kinematics” by replacing a conventional proton target for RI beams with a spin-polarized proton target. One of the first possible applications of the new technique is for proton resonant scattering on carbon-9. In this study, we developed recoil proton detectors and a low-energy carbon-9 beam toward the future spin-polarized resonant scattering experiment. We also performed a test measurement of unpolarized proton resonant scattering on carbon-9.

Research Products

• [Journal Article] Production of low-energy 4.17 MeV/nucleon 9C beam with polyethylene at RIPS (2016)
  • Author(s): Ｅ. Milman, T. Teranishi et al.
  • Journal Title: RIKEN Accelerator Progress Report Volume: 49 Pages: 160-160
  • Open Access / Int'l Joint Research
• [Presentation] MPPC を用いた CsI(Tl) シンチレーション検出器の開発 (2017)
  • Author(s): 上野熊紀、寺西高、岡祥平、入部弘太郎、吉田郭冶、坂井秀光、豊原一輝
  • Organizer: 第１２３回日本物理学会九州支部例会、2017年12月9日、鹿児島大学
• [Presentation] 逆運動学陽子共鳴散乱実験のための検出器系の開発 (2017)
  • Author(s): 岡祥平、寺西高、上野熊紀、入部弘太郎、吉田郭冶、坂井秀光、豊原一輝
  • Organizer: 第１２３回日本物理学会九州支部例会、2017年12月9日、鹿児島大学
• [Presentation] RIビーム実験のための陽子シンチレーション検出器の開発 (2016)
  • Author(s): 秋山陽平、寺西高 他
  • Organizer: 第122回日本物理学会九州支部例会
  • Place of Presentation: 福岡大学
  • Year and Date: 2016-12-10
• [Presentation] RIビーム実験のための反跳粒子ΔE-E検出器の開発 (2016)
  • Author(s): 福多貴大、寺西高 他
  • Organizer: 第122回日本物理学会九州支部例会
  • Place of Presentation: 福岡大学
  • Year and Date: 2016-12-10
• [Presentation] Search for low-lying resonances in 10N structure via 9C + p resonant scattering (2016)
  • Author(s): Evgeniy Milman, Takashi Teranishi et al.
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 宮崎大学木花キャンパス
  • Year and Date: 2016-09-23
• [Presentation] Search for 10N resonances with 9C+p resonant scattering (2016)
  • Author(s): Evgeniy Milman, Takashi Teranishi et al.
  • Organizer: 日本物理学会第71会年次大会
  • Place of Presentation: 東北学院大学泉キャンパス
  • Year and Date: 2016-03-20
• [Presentation] 陽子共鳴散乱実験のための低エネルギー9Cビーム開発 (2015)
  • Author(s): 栄大輔、Evgeniy Milman、寺西高、他
  • Organizer: 第121回日本物理学会九州支部例会
  • Place of Presentation: 九州工業大学戸畑キャンパス
  • Year and Date: 2015-12-05