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1993 Fiscal Year Final Research Report Summary

Laser cooling of unstable nuclear ions in an ion trap

Research Project

Project/Area Number 04452022
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 核・宇宙線・素粒子
Research InstitutionUniversity of Tokyo

Principal Investigator

KATAYAMA Ichiro  Univ.Tokyo, INS, Professor, 原子核研究所, 教授 (30028237)

Co-Investigator(Kenkyū-buntansha) OHTANI Syunsuke  Electro.Comm.Univ.Laser Center, Professor, レーザー極限技術センター, 教授 (60023735)
NOMURA Touru  Univ.Tokyo, INS, Professor, 原子核研究所, 教授 (60087393)
KAWAKAMI Hirokane  Univ.Tokyo, INS, Res.Assistant, 原子核研究所, 助手 (50013412)
WADA Michiharu  Univ.Tokyo, INS, Res.Assistant, 原子核研究所, 助手 (50240560)
Project Period (FY) 1992 – 1993
KeywordsRF trap / Penning trap / Laser Cooling / Unstable nuclei / Laser Microwave / ^<43>Ca^+ ion / Sextupole rf old Ion Guide (SPIG) / Double Resonance Bohr.Weisskopf Effect
Research Abstract

There has been a great progress, using an ion trap, to perform a very precise measurement of some fundamental quantities in quantum optics. The present study aims at applying this technique to investigate a property of unstable nuclei.
At INS, Univ.Tokyo, we have been working to build an on-line ion-trap system by which we plan to measure hyper-fine anomaly for unstable nuclei. In the present study, we have rather concentrated on building a laser system as well as on performing laser cooling of ^<43>Ca^+ ions as a test of the system. The laser system comprises an Ar laser, which became available by this fund, and a Ti-saphire laser which we got by other fund. Recently we could observe a laser-flourescence of ^<43>Ca^+ ions in an RF trap and some laser-cooling effect. After optimizing the system for laser-cooling, we'll soon start a laser-microwave double resonance of ^<43>Ca^+.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Hong Jie Xu et al.: "A new cooling and focusing device for ion guide" Nucl.Instr.Method. A333. 274-281 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Wada et al.: "An on-line ion trap for unstable nuclei at INS" Hyperfine Interactions. 81. 161-170 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Ogawa et al.: "Charge state dependent energy loss of high velocity oxygen ions in the charge state non-equilibrium region" Nucl.Instr.Method. B82. 80-84 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Tanabe et al.: "Dissociative Recombination of HeH^+ at large center of mass energies" Phys.Rev.Lett.70. 422-425 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Yamazaki et al.: "Possibility of a crossed-beam experiment involving slow-neutron capture by unstable nuclei-“rapid-processtron"" Nucl.Instr.Method. A325. 489-493 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Xu et al: "A new cooling and focusing device for ion guide" Nucl.Instr.Meth.A333. 274-281 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Wada et al: "An on-line ion trap for unstable nuclei at INS" Hyperfine Interactions. 81. 161-170 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Ogawa et al: "Change state dependent energy loss of high velocity oxygen ions in the charge state non-equilibrium region" Nucl.Instr.Meth.B82. 80-84 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Tanabe et al: "Dissociative Recombination of HeH^+ at large center of mass energies" Phys.Rev.Lett.70. 422-425 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Yamazaki et al: "Possibility of a crossed-beam experiment involving slow-neutron capture by unstable nuclei-"rapid-processtron"" Nucl.Instr.Meth.A325. 489-493 (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1995-03-27  

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