Beta-decay half-life measurement of 46Cr

• Project/Area Number: 19740131
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: WAKABYASHI Yasuo The University of Tokyo, 先端基礎研究センター, 博士研究員 (80447359)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,670,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥570,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: β崩壊 / 半減期 / 不安定核 / 核物理

Research Abstract

It is interesting in astrophysics to know the production and the decay properties of nuclei for nucleosynthesis in stars.
In this study, we performed the experiment to measure the beta-decay half-life and its branching ratio of 46Cr for nucleosynthesis in stars.
The experimental results were presented at the third joint meeting of the nuclear physics of the APS and the JPS. It will be precious data to understand the nucleosynthesis.

Research Products

• [Journal Article] Beta-decay half life of 46Cr (2010)
  • Author(s): Y. Wakabayashi、H. Yamaguchi、T. Hashimoto, 他10名
  • Journal Title: CNS Annual Report 2009年度版(印刷中)
• [Journal Article] Development of 46Cr secondary beam for β-decay measurement (2010)
  • Author(s): Y. Wakabayashi、H. Yamaguchi、T. Hashimoto, 他10名
  • Journal Title: CNS Annual Report 2008年度版 Pages: 25-26
• [Journal Article] Beta-decay half life of 46Cr (2010)
  • Author(s): Y.Wakabayashi
  • Journal Title: CNS Annual Report 2009年度版 Pages: 23-23
• [Journal Article] Half life measurement of 46Cr (2009)
  • Author(s): Y. Wakabayashi、H. Yamaguchi、T. Hashimoto, 他10名
  • Journal Title: RIKEN Accelerator Progress Report 2008 42 Pages: 19-19
• [Journal Article] Development of the secondary 46Cr beam produced by fusion reactions (2009)
  • Author(s): Y. Wakabayashi、H. Yamaguchi、S. Hayakawa, 他6名
  • Journal Title: CNS Annual Report 2007年度版 Pages: 11-12
• [Journal Article] Half life measurement of 46Cr (2009)
  • Author(s): Y. Wakabayashi
  • Journal Title: RIKEN Accelerator Progress Report 2008 42(印刷中)(掲載確定)
• [Journal Article] Development of 46Cr secondary beam for β-decay measurement (2009)
  • Author(s): Y. Wakabayashi
  • Journal Title: CNS Annual Report 2008年度版
• [Journal Article] Development of the 46Cr secondary beam (2008)
  • Author(s): Y. Wakabayashi、H. Yamaguchi、S. Hayakawa, 他6名
  • Journal Title: RIKEN Accelerator Progress Report 2007 41 Pages: 25-25
• [Journal Article] Development of the 46Cr secondary beam (2008)
  • Author(s): Yasuo Wakabayashi
  • Journal Title: RIKEN Accelerator Progress Report 2007 41(印刷中)
• [Journal Article] Development of the secondary 46Cr beam produced by fusion reactions (2008)
  • Author(s): Yasuo Wakabayashi
  • Journal Title: CNS Annual Report 2007年度版(印刷中)
• [Journal Article] High-Spin States in 93Nb (2007)
  • Author(s): Yasuo Wakabayashi
  • Journal Title: Journal of the Physical Society of Japan 76
  • Peer Reviewed
• [Presentation] Beta-decay measurement of 46Cr (2009)
  • Author(s): Y. Wakabayashi
  • Organizer: Third Joint Meeting of the Nuclear Physics Division of the APS and the JPS
  • Place of Presentation: Hawaii
  • Year and Date: 2009-10-17
• [Presentation] Beta decay measurement of 46Cr (2009)
  • Author(s): Y.Wakabayashi
  • Organizer: 第3回 日米物理学会合同核物理分科会
  • Place of Presentation: Hawaii
  • Year and Date: 2009-10-17
• [Presentation] 46Crのベータ崩壊の半減期測定 (2008)
  • Author(s): 若林泰生
  • Organizer: 停止・低速不安定核ビームを用いた核分光研究会(SSRI2008)
  • Place of Presentation: 大阪大学
  • Year and Date: 2008-12-25
• [Presentation] 46Crのベータ崩壊の半減期測定 (2008)
  • Author(s): 若林泰生
  • Organizer: 停止・低速不安定核ビームを用いた核分光研究会
  • Place of Presentation: 大阪大学
  • Year and Date: 2008-12-25
• [Presentation] Cryogenic gas target system for intense RI beam productions in nuclear astrophysics (2007)
  • Author(s): Y. Wakabayashi
  • Organizer: Origin of Matter and Evolution of Galaxies (OMEG07)
  • Place of Presentation: Sapporo, Japan(ポスター発表)
  • Year and Date: 2007-12-05
• [Presentation] Cryogenic gas target system for intense RI beam productions in nuclear astrophysics (2007)
  • Author(s): Yasuo Wakabayashi
  • Organizer: Origin of Matter and Evolution of Galaxies (OMEG07)
  • Place of Presentation: Sapporo, Japan
  • Year and Date: 2007-12-05
• [Presentation] Search for high-spin isomers using radioactive-isotope 17N beam (2007)
  • Author(s): Yasuo Wakabayashi
  • Organizer: International Nuclear Physics Conference 2007 (INPC2007)
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2007-06-06