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Study of neutron rich unstable nuclei by the improved Ion guide method

Research Project

Project/Area Number 15540245
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionTohoku University

Principal Investigator

SHINOZUKA Tsutomu  Tohoku University, Cyclotron and Radioisotope Center, Assistant Professor, サイクロトロン・ラジオアイソトープセンター, 助教授 (10134066)

Co-Investigator(Kenkyū-buntansha) FUJITA Masahiro  Tohoku University, Cyclotron and Radioisotope Center, Assistant Researcher, サイクロトロン・ラジオアイソトープセンター, 助手 (70292307)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2004: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2003: ¥2,100,000 (Direct Cost: ¥2,100,000)
Keywordsneutron rich nuclei / RF ion guide / AVF cyclotron / clover Germanium detector / magnetic moment / high intensity proton beam / neutron beam / 78Ni / 核分裂生成物 / ガンマ線検出器 / オンライン質量分離 / イオンガイド / RFカーペット / ISOL
Research Abstract

The purpose of this research program is to search for unknown unstable neutron rich nuclei such as 78Ni by the improved RF ion guide method. The project has been programmed as
1)Development of the new type of the ion guide isotope separator on line, which is consist of large volume gas chamber and electric DC and RF field.
2)Development of high intensity proton beam acceleration by new K=110MeV cyclotron of CYRIC to produce well collimated high energy neutron beam
3)Search for the neutron rich unstable nuclei from Uranium fission products with RF ion guide and high intensity proton and/or neutron beam
4)Precise nuclear spectroscopy by Germanium detector set of 6 clovers detectors with large solid angle.
The research project items of 1 and 2 are successfully developed during the term of project. Especially, the RF ion guide system has shown the improved performances compared with the old type ion guide system with small gas volume and no electric field. By this new ion guide system, the search for unstable nuclei around neutron rich region has been done by proton induced fission reaction of Uranium target.
Up to now, several nuclei with most neutron rich nuclei on front line as known isotopes has been detected and the performance of this method has been probed.
High intensity acceleration test for protons has been tested up to 30 micro Ampere at the new CYRIC cyclotron with K=110MeV and probed the capability of acceleration by AVF cyclotron.
Precise spectroscopy by 6 clover type Germanium detectors has also performed with RF ion guide system and intensity proton beams for Uranium fission reaction. Around neutron rich region from Rhodium to Palladium nucleus, we have obtained the new information about the levels and spins by the gamma-gamma coincidence method by large solid angle detector set.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (10 results)

All 2004 2003 Other

All Journal Article (9 results) Publications (1 results)

  • [Journal Article] Nuclear structure studies by K=110 MeV new cyclotron at CYRIC2004

    • Author(s)
      M.Fujita, T.Shinozuka et al.
    • Journal Title

      Proceedings of The Fifth Japan China Joint Nuclear Physics Symposium (2004). Fukuoka, 233-234

      Pages: 233-234

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] H-Acceleration with AVF 930 cyclotron2004

    • Author(s)
      T.Endo, M.Fujita, T.Shinozuka
    • Journal Title

      Proceedings of The 17th International Conference on Cyclotrons and Their Applications 2004, Tokyo (to be published)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A compact 14.5 GHz ECR ion source at Tohoku University2004

    • Author(s)
      Y.Miyashita, M.Fujita, T.Shinozuka et al.
    • Journal Title

      Proceedings of The 17th International Conference on Cyclotrons and Their Applications 2004, Tokyo (to be published)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Nuclear structure studies by K=110 MeV new cyclotron at CYRIC2004

    • Author(s)
      M.Fujita, T.Shinozuka et al.
    • Journal Title

      Proceedings of The Fifth Japan China Joint Nuclear Physics Symposium, Fukuoka

      Pages: 233-234

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] H-Acceleration with AVF 930 cyclotron2004

    • Author(s)
      T.Endo, M.Fujita, T.Shinozuka
    • Journal Title

      Proceedings of The 17th International Conference on Cyclotrons and Their Applications, Tokyo (to be published)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A compact 14.5 GHz ECR ion source at Tohoku University2004

    • Author(s)
      Y.Miyashita, M.Fujita, T.Shinozuka et al.
    • Journal Title

      Proceedings of The 17th International Conference on Cyclotrons and Their Applications, Tokyo (to be published)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Nuclear structure studies by K=110 MeV new cyclotron at CYRIC2004

    • Author(s)
      M.Fujita, T.Endo, T.Shinozuka
    • Journal Title

      Proceedings of The Fifth Japan China Joint Nuclear Physics Symposium

      Pages: 233-234

    • Related Report
      2004 Annual Research Report
  • [Journal Article] H^- Acceleration with AVF 930 cyclotron2004

    • Author(s)
      T.Endo, M.Fujita, T.Shinozuka
    • Journal Title

      Proceedings of The 17th International Conference on Cyclotrons and Their Applications (to be published)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Development of RF-IGISOL at CYRIC2003

    • Author(s)
      T.Sonoda, T.Shinozuka et al.
    • Journal Title

      CYRIC ANNUAL Report 2002

      Pages: 21-23

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Publications] T.Sonoda, T.Shinozuka et al.: "Development of RF-IGISOL at CYRIC"CYRIC ANNUAL Report 2002. 21-23 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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