Studies on hyperfine fields of rare-earth-element impurities and the measurements of magnetic moments of neutron-rich nuclei in medium-mass region

• Project/Area Number: 26400290
• 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: Kyoto University
• Principal Investigator: Tanigaki Minoru 京都大学, 原子炉実験所, 助教 (90314294)
• Research Collaborator: Ohkubo Yoshitaka ; Taniguchi Akihiro ; Tsuneyama Masayuki
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 摂動角相関 / 核磁気モーメント / 超微細場 / RIビーム / 超微細相互作用 / 放射線計測 / 検出器開発

Outline of Final Research Achievements

Re-evaluations of the magnetic moments of unstable nuclei in medium-mass region were intended by improving the reliability of the magentic monent of reference nucleus through the re-measurement of hyperfine field of rare-earth elements in ferromagnetic materials. TDPAC measurements of Pm-147 and Ce-140 in Fe, and the development a new TDPAC measurement system were performed, but magnetic moments of unstable nuclei in medium-mass region were not performed due to the operation of the nuclear reactor at Kyoto University were terminated by legal regulations for most of the period in this study.