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Systematic study of the diversity of nuclear structures based on nucleon pair correlation and unbound states

Research Project

Project/Area Number 18K03636
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionKitami Institute of Technology

Principal Investigator

Masui Hiroshi  北見工業大学, 工学部, 教授 (30396345)

Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords不安定核 / 連続状態 / テンソル相互作用 / 対相関 / テンソル相関 / Anti-Halo / 中性子-中性子相関 / 連続状態相関 / Halo構造 / クラスター / 非束縛状態 / 陽子中性子相関 / テンソル力 / 核子対相関
Outline of Final Research Achievements

We have studied the contribution of nucleon pairing correlations and unbound states in atomic nuclei to the diversity of nuclear structures from three aspects: (1) the effect of tensor forces in proton-neutron correlations on the structure of unbound states, (2) the effect of neutron-neutron correlations on nuclear structures, and (3) their involvement in structural changes of the continuum states. Using the Cluster-Orbital Shell Model approach, we have performed detailed analyses of (1) the relationship between tensor forces and energy levels in 18F, 42Sc, and 58Cu, (2) the formation of the anti-halo structure in 31F, and (3) the contribution of the continuum states in carbon isotopes.

Academic Significance and Societal Importance of the Research Achievements

不安定核の構造を、三体模型の枠組みにおいてCluster-Orbital Shell Model(COSM)にGauss基底(GEM)を適用して詳細に解析した。本研究では中性子-中性子対、陽子-中性子対のいずれの場合においても、三体の束縛状態の構造の鍵を握るのがコア核からくる連続状態の変化であることを示した。この切り口は、我々のアプローチ(COSM+GEM)を用いることが重要であり、他の平均場的アプローチ等においては議論が難しい。さらに、データサイエンス的アプローチを用いてパラメータの妥当性を議論していたことから、他分野における研究遂行の指針づくりに大いなる寄与があったと考えられる。

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (14 results)

All 2023 2022 2020 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Two-Neutron Halo Structure and Anti-halo Effect in 31F2022

    • Author(s)
      Masui Hiroshi、Horiuchi Wataru、Kimura Masaaki
    • Journal Title

      Few-Body Systems

      Volume: 63 Issue: 1 Pages: 1-5

    • DOI

      10.1007/s00601-021-01715-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two-neutron halo structure of 31F and a novel pairing antihalo effec2020

    • Author(s)
      Hiroshi Masui, Wataru Horiuchi, Masaaki Kimura
    • Journal Title

      Phys. Rev. C

      Volume: 101 Issue: 4 Pages: 1-6

    • DOI

      10.1103/physrevc.101.041303

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Concept of a Unified Research Management System and its Application to Data Clustering2019

    • Author(s)
      Hiroshi Masui, Kei Kikuchi, Ren Kurose, Xun Shao
    • Journal Title

      International Journal of Institutional Research and Management

      Volume: 3 Pages: 50-61

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photodisintegration cross sections for resonant states and virtual states2019

    • Author(s)
      Myagmarjav Odsuren, Yuma Kikuchi, Takayuki Myo, Hiroshi Masui and Kiyoshi Kato
    • Journal Title

      Physical Review C

      Volume: 99 Issue: 3 Pages: 0343121-6

    • DOI

      10.1103/physrevc.99.034312

    • NAID

      120006603708

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 数理データ的手法による原子核のユニバーサリティ解析2023

    • Author(s)
      宮澤鷹介、升井洋志
    • Organizer
      情報処理北海道シンポジウム 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 31Fでの新しいanti-halo形成2020

    • Author(s)
      升井洋志
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Hiroshi Masui2020

    • Author(s)
      Neutron-halo structure and anti-halo effect in 31F
    • Organizer
      8th Asia-Pacific Conference on Few-Body Problems in Physics "APFB2020"
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 31FにおけるHalo /Anti-Halo形成2019

    • Author(s)
      升井洋志
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Data Compilation Procedure of the Nuclear Reaction Data on the Unified Research Management System2019

    • Author(s)
      Hiroshi Masui
    • Organizer
      2019 8th International Congress on Advanced Applied Informatics (IIAI-AAI)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of tensor force for Iso-scaler and iso-vector correlations in nuclei2019

    • Author(s)
      Hiroshi Masui
    • Organizer
      ECT* workshop on Universal physics in Many-Body Quantum Systems - From Atoms to Quarks
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 現実的核力を基にしたテンソル力の陽子-中性子相関への影響2018

    • Author(s)
      升井洋志
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Role of the Tensor Force on the Proton-Neutron Correlation in N = Z Nuclei2018

    • Author(s)
      Hiroshi Masui
    • Organizer
      Fourth International Workshop on “State of the Art in Nuclear Cluster Physics” (SOTANCP4)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Proton-neutron correlation through the tensor force in a three-body model2018

    • Author(s)
      Hiroshi Masui
    • Organizer
      Workshop on Nuclear Cluster Physics (WNCP2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Concept of a Unified Research Management System and its Application to Data Clustering2018

    • Author(s)
      Hiroshi Masui
    • Organizer
      7th International congress on advanced applied informatics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2025-01-30  

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