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Study of Giant Monopole Resonance in Unstable Nuclei via Proton Inelastic Scattering at Zero Degrees

Research Project

Project/Area Number 13440064
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 InstitutionTohoku University

Principal Investigator

KOBAYASHI Toshio  Tohoku University, Grad.School of Science, Professor, 大学院・理学研究科, 教授 (30186754)

Co-Investigator(Kenkyū-buntansha) IWASA Naohito  Tohoku University, Grad.School of Science, Associate Professor, 大学院・理学研究科, 助教授 (50322996)
OTSU Hideaki  Tohoku University, Grad.School of Science, Assistant Professor, 大学院・理学研究科, 助手 (90302075)
SAKAGUCHI Harutaka  Kyoto Univ., Grad.School of Science, Associate Professor, 大学院・理学研究科, 助教授 (30025465)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥12,800,000 (Direct Cost: ¥12,800,000)
Fiscal Year 2003: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2002: ¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 2001: ¥6,500,000 (Direct Cost: ¥6,500,000)
KeywordsExotic Nuclei / Giant Monopole Resonance / Nuclear compressibility / Proton Inelastic Scattering / Neutron-Rich Nuclei / 超前方非弾性散 / 超前方非弾性散乱 / RIビーム / 核物質 / 圧縮率
Research Abstract

We have developed new experimental technique to study Giant Monopole Resonances in exotic nuclei via proton inelastic scattering at zero degrees utilizing inverse kinematics. In this method, low-energy protons emitted at zero degrees are detected by the Si strip focal plane detectors in the 180-degree-bend-type magnetic spectrometer. Total kinetic energy and the time of flight of protons are measured to get the the excitation energy of the nucleus and the scattering angle of protons. After constructing window-frame-type magnetic dipole magnet, development and construction of the Si-strip focal plane detectors, development of high-resolution TOF measurements, energy resolution of less than 10keV (rms) and TOF resolution of less than 1 nsec (rms) were obtained for 0-4 MeV protons. Test experiments were performed at RIKEN accelerator facility. using primary heavy ion beams (^<12>C and^<40>Ar) and neutron-rich secondary beams (^<38>S) at around 60 MeV/A. Through these tests, we have succeeded to reduce physical backgrounds down to negligible level under the actual experimental conditions. Finally we have performed zero-degree proton inelastic scattering measurements from p(^<38>S,p') reaction, and succeeded to observe L=0 and L=1 type excitations. Although backgrounds from C component in CH2 target need to be reduced, we have succeeded to establish proposed new, experimental technique.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (10 results)

All 2004 2003 Other

All Journal Article (7 results) Publications (3 results)

  • [Journal Article] Pre-emmision of correlated neutrons in the fusion of ^<11>Li halo nuclei with Si target2004

    • Author(s)
      M.Petrascu et al.
    • Journal Title

      Physical Review C69

      Pages: 11602-11602

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Coulomb and nuclear breakup of a halo nucleus ^<11>Be2004

    • Author(s)
      N.Fukuda et al.
    • Journal Title

      Physical Review C70

      Pages: 54606-54606

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Pre-emmision of correlated neutrons in the fusion of ^<11>Li halo nuclei with Si target2004

    • Author(s)
      M.Petrascu et al.
    • Journal Title

      Phys.Rev. C69

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Coulomb and nuclear breakup of a halo nucleus ^<11>Be2004

    • Author(s)
      N.Fukuda, et al.
    • Journal Title

      Phys.Rev. C70

      Pages: 54606-54606

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] In-beam γ spectroscopy of ^<34>Si with deuteron inelastic scattering using reverse kinematics2003

    • Author(s)
      N.Iwasa et al.
    • Journal Title

      Physical Review C67

      Pages: 64315-64315

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Possibility of a two-proton hale in ^<17>Ne2003

    • Author(s)
      R.Kanungo et al.
    • Journal Title

      Physics Letters B571

      Pages: 21-28

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Possibility of a two-proton halo in ^<17>Ne2003

    • Author(s)
      R.Kanungo et al.
    • Journal Title

      Physics Letters B571

      Pages: 21-28

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Petrascu, T.Kobayashi et al.: "Pre-emission of correlated neutrons in the fusion of ^<11>Li halo nuclei with Si targets"Physical Review. C69. 011602-1-011602-5 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] R.Kanungo, N.Iwasa et al.: "Possibility of two-proton halo in ^<17>Ne"Physics Letters. B571. 21-28 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Satou, H.Otsu et al.: "Three-body dN interaction in the analysis of the ^<12>C(d(pol),d') reaction at 270 MeV"Physics Letters. B549. 307-310 (2002)

    • Related Report
      2003 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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