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Behaviour of Ions of Unstable Nuclei in Superfluid Helium

Research Project

Project/Area Number 01044083
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research InstitutionOsaka University

Principal Investigator

TAKAHASHI Noriaki  Osaka University, Professor, 教養部物理, 教授 (10028152)

Co-Investigator(Kenkyū-buntansha) HASS Michael  Weizmann Institute of Science, Professor, 核物理学部, 教授
MUNZENBERG G  GSI, 核化学講座, 研究員
TRAUTMANN Wolfgang  GSI, Physicist, 核物理学講座, 研究員
FUJITA Yoshitaka  Osaka University, Assistant, 教養部物理, 助手 (60093457)
SHIMODA Tadashi  Osaka University, Associate Professor, 教養部物理, 助教授 (70135656)
MUNZENBERG Gottfried  GSI, Physicist
Project Period (FY) 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1989: ¥3,500,000 (Direct Cost: ¥3,500,000)
KeywordsSuperfluid helium / Impurity ion / Snowball / Microcluster / Beta radioactive nucleus / Radiocactive nuclear beam / Beta detection method / Alpha detection method / Accelerator SIS-ESR / GSI
Research Abstract

It has long been known that a positive ion, if introduced in superfluid helium, exerts electrostriction on helium atoms surrounding it and acquires effective mass of 50 - 100 times the helium mass. Such a charged aggregate of helium atoms around an impurity ion is referred to as a snowball. High-energy beam of short-lived beta- and alpha-radioactive ions are introduced into superfluid helium as impurity ions and the snowballs formed around the radioactive ions are detected by the beta- and alpha-particles. Our interest is the use of ^6He and ^8He and many other short-lived beta- and alpha-active nuclei to study transport phenomena related to impurity ions and interactions of impurity ions with basic excitations in superfluid helium. Possibility has been pursued of carrying out an experimental project; STUDY OF CONDENSED MATTER AT LOW TEMPERATURE WITH RADIOACTIVE NUCLEAR BEAMS, at the newly constructed accelerator complex SIS-ESR of GSI at Darmstadt, Germany.

Report

(1 results)
  • 1989 Final Research Report Summary
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] N.Takahashi,T.Shimoda,Y.Fujita,H.Miyatake and T.Itahashi: "Charge Carriers in Liquid Helium Produced by Nuclear Beam" Radioactive Nuclear Beams.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] C.Broude,G.Goldring,M.Hass,N.Takahashi et al.: "A Parity Violation Experiment with a Separated Beam of Tc Isomers" Radioactive Nuclear Beams.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Y.Fujita,N.Takahashi,et al.: "Synchrotron Ring as a Multi-Turn Time-of-flight Mass Spectrometer" Sci.Rep.Coll.Gen.Educ.,Osaka University. 39. 17-22 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] K.Ashahi,M.Ishihara,……,T.Shimoda,H.Miyatake and N.Takahashi: "New Aspect of Intermediate Energy Heavy Ion Reactions Large Spin-Polarization of Fragments" Phys.Rev.Lett.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] C.Broude,G.Goldring,M.Hass,N.Takahashi,et al.: "Parity Violation in the 17^-/2 Isomer of ^<93>Tc" Z.Phys.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N. Takahashi, T. Shimoda, Y. Fujita, H. Miyatake and T. Itahashi: "Charge Carriers in Liquid Helium Produced by Nuclear Beam" Radioactive Nuclear Beams.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] C. Broude, G. Goldring, M. Hass, N. Takahashi, S. Hofmann, F.P. Hessberger and V. Ninov.: "A Parity Violation Experiment with a Separated Beam of Tc Isomers" Radioactive Nuclear Beams.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Y. Fujita, N. Takahashi, T. Schwab, J. Schnell, K. Lindemann, G. Munzenberg, H. Geissel, B. Franczak and H. Wollnik: "Synchrotron Ring as a Multi-Turn Time-of-flight Mass Spectrometer" Sci. Rep. Coll. Gen. Educ., Osaka University. 39. 17-22 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] K. Ashahi, M. Ishihara, N. Inabe, T. Ichihara, T. Kubo, M. Adachi, H. Takahashi, M. Kouguchi, M. Fukuda, D. Mikolas, D.J. Morrissey, D. Beaumel, T. Shimoda, H. Miyatake and N. Takahashi: "New Aspect of Intermediate Energy Heavy Ion Reactions - Large Spin Polarization of Fragments" Phys. Rev. Lett.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] C. Broude, G. Goldring, M. Hass, N. Takahashi, S. Hofmann, F.P. Hessberger and V. Ninov: "Parity Violation in the 17 -/2 Isomer of ^<93>Tc" Z. Phys.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary

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Published: 1989-04-01   Modified: 2016-04-21  

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