Development of a Technique of Dynamic Nuclear Self Polarization for Measurements of Nuclear Magnetic Moment of Unstable Nuclei

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540307
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: KOIZUMI Mitsuo 独立行政法人日本原子力研究開発機構, 原子力基礎工学研究部門, 研究副主幹 (30354814)
• Co-Investigator(Renkei-kenkyūsha): IIMURA Hideki 独立行政法人日本原子力研究開発機構, 原子力基礎工学研究部門, 研究主幹 (10343906) ; GOTO Jun 新潟大学, アイソトープ総合センター, 助教 (90370395) ; MATSUKI Seishi 立命館大学, 総合理工学研究機構, 客員研究員 (50037941)
• Project Period (FY): 2009 – 2011
• Keywords: 原子核(実験)

Research Abstract

Dynamic Nuclear Self Polarization(DYNASP) was theoretically predicted by Dyakonov et al. The phenomenon is observed in III-V semiconductors below a critical temperature(Tc). When electrons are excited to the conduction band with linearly polarized light, the lattice nuclei are largely self-polarized through the contact hyperfine interaction between the electrons and the lattice nuclei. The DYNASP theory was generalized by taking account of the conduction electrons polarized with circularly polarized light. To examine the DYNASP phenomenon below 4 K, an apparatus has been developed. The system is applicable to-NMR experiments for samples containing unstable nuclei, and pulsed NMR experiments for samples of stable nuclei.

Research Products

• [Journal Article] Dynamic nuclear self-polarization with circularly polarized light (2011)
  • Author(s): M. Koizumi, J. Goto, and S. Matsuki
  • Journal Title: J. Appl. Phys Volume: 110 Pages: 013911-1-8
  • DOI: DOI:10.1063/1.3602118
  • Peer Reviewed
• [Presentation] 円偏光レーザーによるIII-V族半導体の動的自己核偏極 (2012)
  • Author(s): 小泉光生、後藤淳、松木征史
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大
  • Year and Date: 2012-03-24
• [Presentation] 動的核整列を用いた不安定核の偏極法の開発 (2011)
  • Author(s): 小泉光生、後藤淳、松木征史、中村詔司
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大
  • Year and Date: 2011-03-27
• [Presentation] 動的核整列を用いた不安定核の偏極法の開発 (2010)
  • Author(s): 小泉光生、後藤淳、松木征史
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大
  • Year and Date: 2010-03-20
• [Remarks] (1) M. Koizumi, et al., J. Appl. Phys., 110, 2011, 013911-1-8は、Virtual Journal of Nanoscale Science & Technology(http ://www. vjnano.org)の2011年July 25日号(24巻4号)に選定された。
• [Remarks]
  • URL: http://jolisfukyu.tokai-sc.jaea.go.jp/fukyu/mirai/2011/7_1.html
• [Remarks]
  • URL: http://jolisfukyu.tokai-sc.jaea.go.jp/fukyu/mirai-en/2011/index_set.html