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Landau-Zener Effects in Nuclear Heavy-Ion Reactions

Research Project

Project/Area Number 61540208
Research Category

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

Allocation TypeSingle-year Grants
Research Field 核・宇宙線・素粒子
Research InstitutionKyoto University

Principal Investigator

ABE Yasuhisa  Research Institute for Fundamental Physics, Kyoto University, 基礎物理学研究所, 助教授 (80000868)

Co-Investigator(Kenkyū-buntansha) TAZAWA Terutake  Technical College, Yamaguchi University, 工業短期大学部, 教授 (80091198)
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1987: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1986: ¥900,000 (Direct Cost: ¥900,000)
KeywordsLandau-Zener Effects / Heavy-Ion Nuclear Reactions / 共鳴機構 / ランダウ・ジナー効果
Research Abstract

1. Investigations have been made on whether Landau-Zener level crossings in nuclear heavy-ion collisions cause resonance-like enhancements in transition cross sections. Semi-classical estimates were already shown by the head investigator to give enhanced cross sections corresponding to experiments. Quantum mechanical calculations have been performed with a simple two-level model, but have turned out to give only slight enhancements. In order to understand this difference, analytical treatments are now being pursuites, for example, by DWBA.
2. In order to perform the above investigations, we have developped a new formalism, i.e., a scattering formalism in the body-fixed frame, which enables us to accomodate 2-center shell model in scattering problem.
3. Furthermore, we have critically investigated the vibration-rotation models for molecular resonances. It has been shown that neglects of rotation-vibration couplings cause completely misleading results.

Report

(3 results)
  • 1988 Final Research Report Summary
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] Y.Abe: Journal de Physique no.8. 47. c4305-c4315 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Abe: Proc.XVI Int.Symp.on Nuclear Physics -Dynamics of Heavy Ion Collisions-. 66-82 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.V.Matveenko: Few-Body Systems. 2. 127-143 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Abe: Proc.6th Int.Conf. on Nuclear Physics -Frontiers of Heavy-Ion Physics-. 31-44 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K.Kato: Prog.Theor.Phys.80. 119-129 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y.Abe: Proc.Brasov Int.Summer School,30 Aug.-9 Sept.,Brasov,Romania.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y. Abe.: "Langevin Approach to Nuclear Dissipative Dynamics" Journal de Physique no.8. 47. 305-315 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] A.V. Matveenko.: "Asymptotically Adapted Three-Body Molecular States" Few-Body Systems. 2. 127-143 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y. Abe.: "Progress in Heavy Ion Resonance Research" Proc. 6th Int. Conf. on Nuclear Physics -- Frontiers of Heavy-Ion Physics --. 31-44 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] K. Kato.: "Criticisms on the Rotation-Vibration Approaches to Quasi-Molecular States" Prog. Theor. Phys.80. 119-129 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y. Abe.: "Molecular States in Nuclei" Proc. Brasov Int. Summer School, 30 Aug. - 9 Sept., Brasov, Romania.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Y. Abe: Journal de physique no. 8. 47. C4 305-C4 315 (1986)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. Abe: Proc. XVI Int. Symp. on Nuclear Physics-Dynamics of Heavy Ion Cillisions-. 66-82 (1986)

    • Related Report
      1987 Annual Research Report
  • [Publications] A. V. Matveenko: Few-Body Systems. 2. 127-143 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y. Abe: Proc. 6th Int. Conf. on Nuclear Physics-Frontiers of Heavy-Ion Physics-.

    • Related Report
      1987 Annual Research Report
  • [Publications] N. Ohta: Proc. RIKEN-IN2P3 Symp. on Heavy-Ion Collisions.

    • Related Report
      1987 Annual Research Report
  • [Publications] K. Kato: to be submitted to Prog. Theor. Phys.

    • Related Report
      1987 Annual Research Report
  • [Publications] H.Delagrange: zeitschrift f【u!‥】r Physik. A323. 437-449 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] H.Delagrange: Journal de Physique no.8. 47. 315C4 305-C4 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Y.Abe: Jounal de Physique no.8. 47. C4 329-C4338 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Y.Abe: Proc.【XVI】 Int.Symp.on Nuclear Physics -Dynamics of Heavy-Ion Collisions-. (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Kato: to Journal of Physics G.

    • Related Report
      1986 Annual Research Report
  • [Publications] A.V.Matveenko: Few-Body Problems.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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