• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Spectroscopic Study of Neutron-Rich Nuclei with Spin-Polarized Radioactive Nuclear Beams

Research Project

Project/Area Number 12440065
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionOsaka University

Principal Investigator

SHIMODA Tadashi  Graduate School of Science, Osaka University, Professor, 大学院・理学研究科, 教授 (70135656)

Co-Investigator(Kenkyū-buntansha) MIYATAKE Hiroaki  Institute of Particle and Nuclear Physics (KEK), Associate Professor, 助教授 (50190799)
SHIMIZU Suguru  Graduate School of Science, Osaka University, Research Associate, 大学院・理学研究科, 助手 (60294146)
IZUMI Hideaki  Graduate School of Science, Osaka University, Research Associate, 大学院・理学研究科, 助手 (50294153)
FUKUDA Tomokazu  Osaka Electro-communication University, Professor, 工学部, 教授 (50116092)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥15,400,000 (Direct Cost: ¥15,400,000)
Fiscal Year 2001: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2000: ¥11,300,000 (Direct Cost: ¥11,300,000)
Keywordsunstable nucleus / neutron halo / N=8 magic number / beta-delayed neutrons / level scheme / spin-parity assignment / optical pumping / EOM / スピン編極 / β遅発中性子崩壊 / 励起準位 / 傾斜薄膜法 / 偏極電子移行反応 / レーザー光ポンピング / 11Be / スピン偏極 / レーザ光ポンピング
Research Abstract

The exotic structure of nuclei far from the stability are attracting much interest because they provide stringent tests for our understanding of nuclei. We propose a new method to determine the spin-parities of excited states of nuclei far from the stability. The essential point is that we observe the beta-decay anisotropy from a spin polarized radioactive nucleus in coincidence with beta-delayed particles. We will apply this method to 11Li in order to investigate the disappearance of the N=8 neutron magic number in very neutron rich nuclei.
The research proposal has been approved with high priority at ISAC facility of TRIUMF in Canada, which is a state-of-the-art radioactive nuclear beam facility. In 2001 and 2002, we achieved the following preparatory works :
(1) Achieving highly polarized 11Li beam,
(2) Constructing a dedicated beam-line,
(3) Constructing detector systems for beta-rays, beta-delayed neutrons, and gamma-rays.
All will be ready by April, 2002, and the experiment is scheduled in May 2002.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] T.Shimoda et al.: "Spectroscopic Study of 11Be with Polarized 11Li Beam"TRIUMF Research proposal E903. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Shimoda et al.: "A Spin Polarizer for Low Energy Radioactive Nuclear Beams"Proceedings of the 14th International Spin Physics Symposium SPIN2000, Osaka. October,2000,AIP Conference Proceedings. 570. 811-815 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A Hatakeyama et al.: "Optical Pumping at the ISAC Polarizer"Proceedings of the International Workshop on Polarized Sources and Targets (PST2001), Indiana, USA, September,2001,World Scientific. (出版予定). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] C.D.P.Levy et al.: "A Highly Polarized 8Li+ Ion Beam at ISAC"Proceedings of the International Workshop on Polarized Sources and Targets (PST2001), Indiana, USA, September,2001,World Scientific. (出版予定). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Shimoda et al.: "Spectroscopic Study of 11Be With Polarized 11Li Beam"TRIUMF Research Proposal E903. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Shimoda et al.: "A Spin Polarizer for Low Radioactive Nuclear Beams"Proceedings of the 14th Energy International Spin Physics Symposium SPIN2000, Osaka, October, 2000, AIP Conference Proceedings. 570. 811-815 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Hatakeyama et al.: "0ptical Pumping at the ISAC Polarizer"Proceedings of the International Workshop on Polarized Sources and Targets (PST2001), Indiana, USA, September, 2001, World Scientific. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] C.D.P. Levy et al.: "A Highly Polarize. 8Li+ Ion Beam at ISAC"Proceedings of the International Workshop on Polarized Sources and Targets (PST2001), Indiana, USA, September, 2001, World Scientific. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Shimoda 他: "A Spin Polarizer for Low Energy Radioactive Nuclear Beams"Proceedings of the 14^<th> spin Physics Symposium (SPIN2000) AIP Conference Series. 570. 811-815 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] C.D.P.Levy 他: "Production of a Highly Polarized 8Li+ Ion Beam at ISAC"Proceedings of the Int. Workshop on Polarized Sources and Targets (PST2001). (出版予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] A.Hatakeyama 他: "Detailed Calculation for Optical Pumping at ISAC Polarizer"Proceedings of the Int. Workshop on Polarized Sources and Targets (PST2001). (出版予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Shimoda 他: "A Spin Polarizer for Low Energy Radioactive Nuclear Beams"Proceedings of the 14^<th> spin Physics Symposium (SPIN2000), AIP Conference Series. (出版予定). (2001)

    • Related Report
      2000 Annual Research Report

URL: 

Published: 2000-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi