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Investigation of the stabilization mechanism of cluster structures owing to excess neutrons

Research Project

Project/Area Number 15K17662
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionMatsue National College of Technology

Principal Investigator

Tadahiro Suhara  松江工業高等専門学校, 数理科学科, 講師 (10708407)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords核構造 / クラスター構造 / 分子動力学 / 現実的核力 / 中性子過剰核
Outline of Final Research Achievements

In the previous work, we predicted the existence of the linear-chain structure in 14C, which is a typical example of the exotic cluster structures stabilized by excess neutrons. We confirmed the existence of this structure by the collaboration studies with experimental groups. We studied methods for demonstrating the structure through reactions and showed that α transfer reactions are useful to investigate the spatial distribution of the α cluster. We developed and improved theoretical models for studying nuclear structure using realistic nuclear forces, and confirmed those are effective.

Academic Significance and Societal Importance of the Research Achievements

余剰中性子によって安定化するクラスター構造が実証されたことは重要な学術的意義を持つ。特にそれが半世紀以上に渡って研究されてきたリニアチェイン構造であったことは原子核物理分野へのインパクトは大きかったと評価できる。我々の研究によって発展した様々な理論模型や実験データと構造の情報を結びつけるための手法は、今後原子核構造の理解を進展させていく上で、非常に有用である。特にαクラスター構造の空間的な発達の程度がα移行反応の断面積から直接理解できる可能性を示したことは、クラスター構造研究で得た知見を実証するための方法を新たに与えたと評価できる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (28 results)

All 2019 2018 2017 2016 2015

All Journal Article (14 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 14 results,  Open Access: 7 results,  Acknowledgement Compliant: 6 results) Presentation (14 results) (of which Int'l Joint Research: 6 results,  Invited: 4 results)

  • [Journal Article] Investigation of spatial manifestation of α clusters in 16O via α-transfer reactions2019

    • Author(s)
      Fukui Tokuro、Kanada-En'yo Yoshiko、Ogata Kazuyuki、Suhara Tadahiro、Taniguchi Yasutaka
    • Journal Title

      Nuclear Physics A

      Volume: 983 Pages: 38-52

    • DOI

      10.1016/j.nuclphysa.2018.12.024

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of channel coupling on the elastic scattering of lithium isotopes2018

    • Author(s)
      T. Furumoto, T. Suhara, and N. Itagaki
    • Journal Title

      Physical Reviw C

      Volume: 97 Issue: 4 Pages: 044602-044602

    • DOI

      10.1103/physrevc.97.044602

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tensor-optimized high-momentum antisymmetrized molecular dynamics with a bare interaction, and its application to the He4 nucleus2018

    • Author(s)
      Lyu Mengjiao、Myo Takayuki、Isaka Masahiro、Toki Hiroshi、Ikeda Kiyomi、Horiuchi Hisashi、Suhara Tadahiro、Yamada Taiichi
    • Journal Title

      Physical Review C

      Volume: 98 Issue: 6 Pages: 064002-064002

    • DOI

      10.1103/physrevc.98.064002

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hybridization of tensor-optimized and high-momentum antisymmetrized molecular dynamics for light nuclei with bare interaction2018

    • Author(s)
      Mengjiao Lyu, Masahiro Isaka, Takayuki Myo, Hiroshi Toki, Kiyomi Ikeda, Hisashi Horiuchi, Tadahiro Suhara, and TaiichiYamada
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2018, 011D01 Issue: 1 Pages: 1-9

    • DOI

      10.1093/ptep/ptx192

    • NAID

      130007647367

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Successive variational method of the tensor-optimized antisymmetrized molecular dynamics for central interaction in finite nuclei2017

    • Author(s)
      Takayuki Myo, Hiroshi Toki, Kiyomi Ikeda, Hisashi Horiuchi, and Tadahiro Suhara
    • Journal Title

      Physics Review C

      Volume: 95 Issue: 4 Pages: 044314-044314

    • DOI

      10.1103/physrevc.95.044314

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] New successive variational method of tensor-optimized antisymmetrized molecular dynamics for nuclear many-body system2017

    • Author(s)
      Takayuki Myo, Hiroshi Toki, Kiyomi Ikeda, Hisashi Horiuchi, and Tadahiro Suhara
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2017 Issue: 7 Pages: 1-23

    • DOI

      10.1093/ptep/ptx089

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Power series expansion method in tensor{optimized antisymmetrized molecular dynamics beyond the Jastrow correlation method2017

    • Author(s)
      Takayuki Myo, Hiroshi Toki, Kiyomi Ikeda, Hisashi Horiuchi, and Tadahiro Suhara
    • Journal Title

      Physical Review C

      Volume: 96 Issue: 3 Pages: 1-6

    • DOI

      10.1103/physrevc.96.034309

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] High-momentum antisymmetrized moleculardynamics compared with tensor-optimized shell model for strong tensor correlation2017

    • Author(s)
      Takayuki Myo, Hiroshi Toki, Kiyomi Ikeda, Hisashi Horiuchi, Tadahiro Suhara, Mengjiao Lyu, Masahiro Isaka, and Taiichi Yamada
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2017 Issue: 11 Pages: 1-10

    • DOI

      10.1093/ptep/ptx143

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Experimental investigation of linear-chain structured nucleus in 14C2017

    • Author(s)
      H. Yamaguchi, D. Kahl, S. Hayakawa, Y. Sakaguchi, K. Abe, T. Nakao, T. Suhara, N. Iwasa, A. Kim, D.H. Kim, et al.
    • Journal Title

      Phys. Lett. B

      Volume: 766 Pages: 11-16

    • DOI

      10.1016/j.physletb.2016.12.050

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Tensor-optimized antisymmetrized molecular dynamics as a successive variational method in nuclear many-body system2017

    • Author(s)
      Takayuki Myo, Hiroshi Toki, Kiyomi Ikeda, Hisashi Horiuchi, and Tadahiro Suhara
    • Journal Title

      Physics Letters B

      Volume: 769 Pages: 213-218

    • DOI

      10.1016/j.physletb.2017.03.059

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] General transformation of alpha cluster model wave function to jj-coupling shell model in various 4N nuclei2016

    • Author(s)
      N. Itagaki, H. Matsuno, and T. Suhara
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2016 Issue: 9 Pages: 093D01-093D01

    • DOI

      10.1093/ptep/ptw125

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Antisymmetrized molecular dynamics studies for exotic clustering phenomena in neutron-rich nuclei2016

    • Author(s)
      M.Kimura, T.Suhara, Y.Kanada-Enyo
    • Journal Title

      European Physical Journal

      Volume: A52 Issue: 12 Pages: 373-410

    • DOI

      10.1140/epja/i2016-16373-9

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] One-dimensionality in atomic nuclei: A candidate for linear-chain α clustering in 14C2016

    • Author(s)
      A. Fritsch, S. Beceiro-Novo, D. Suzuki, W. Mittig, J. J. Kolata, T. Ahn, D. Bazin, F. D. Becchetti, B. Bucher, Z. Chajecki, X. Fang, M. Febbraro, A. M. Howard, Y. Kanada-En'yo, W. G. Lynch, A. J. Mitchell, M. Ojaruega, A. M. Rogers, A. Shore, T. Suhara, X. D. Tang, R. Torres-Isea, and H. Wang
    • Journal Title

      Phys. Rev. C

      Volume: 93 Issue: 1

    • DOI

      10.1103/physrevc.93.014321

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Probing surface distributions of alpha clusters in 20Ne via alpha-transfer reaction2016

    • Author(s)
      Tokuro Fukui, Yasutaka Taniguchi, Tadahiro Suhara, Yoshiko Kanada-En'yo, and Kazuyuki Ogata
    • Journal Title

      Physical Review C

      Volume: 93 Issue: 3 Pages: 034606-034606

    • DOI

      10.1103/physrevc.93.034606

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 10Be原子核の非弾性散乱断面積の計算とその励起状態の大きさについて2019

    • Author(s)
      古本猛憲, 須原唯広, 板垣直之
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Linear-chain and gas-like structures in nuclei near 12C2018

    • Author(s)
      Tadahiro Suhara
    • Organizer
      Fourth International Workshop on “State of the Art in Nuclear Cluster Physics”(SOTANCP4)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Tensor-optimized antisymmetrized molecular dynamics with bare forces for light nuclei2018

    • Author(s)
      Takayuki Myo, Mengjiao Lyu, Hiroshi Toki, Kiyomi Ikeda, Hisashi Horiuchi, Tadahiro Suhara, Masahiro Isaka, Taiichi Yamada
    • Organizer
      Fourth International Workshop on “State of the Art in Nuclear Cluster Physics”(SOTANCP4)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reduction of channel coupling effect on Li isotope elastic scatterings by glue-like behaviour of excess neutron2018

    • Author(s)
      Takenori Furumoto, Tadahiro Suhara, Naoyuki Itagaki
    • Organizer
      Fourth International Workshop on “State of the Art in Nuclear Cluster Physics”(SOTANCP4)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] New variational method of tensor-optimized antisymmetrized molecular dynamics with bare nuclear force2018

    • Author(s)
      Takayuki Myo, Mengjiao Lyu, Masahiro Isaka, Hiroshi Toki, Hisashi Horiuchi, Kiyomi Ikeda, Tadahiro Suhara, Taiichi Yamada
    • Organizer
      5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] クラスター構造とクラスターの壊れ2018

    • Author(s)
      須原唯広
    • Organizer
      市大ワークショップ「原子核のダイナミクスの現状と展望」 ~Highlights and Outlooks on Dynamics of Atomic Nuclei~
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] クラスター・シェル競合によるクラスター構造の変化2017

    • Author(s)
      須原 唯広
    • Organizer
      研究会「クラスター・平均場の両側面からみる原子核構造の多様性とそのダイナミクス」
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2017-01-19
    • Related Report
      2016 Research-status Report
  • [Presentation] Linear-chain and gas-like structures in nuclei near 12C2017

    • Author(s)
      Tadahiro Suhara
    • Organizer
      Workshop on Nuclear Cluster Physics (WNCP2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 凝縮状態における平均場の変形とクラスターの変形2017

    • Author(s)
      須原唯広
    • Organizer
      RIBF理論若手放談会:エキゾチック核物理の広がり
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 炭素周辺核のクラスター構造2017

    • Author(s)
      須原唯広
    • Organizer
      RCNP研究会「核子・ストレンジネス多体系におけるクラスター現象」
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] α-cluster breaking effects on cluster structures in 12C2016

    • Author(s)
      Tadahiro Suhara
    • Organizer
      11th International Conference on Clustering Aspects of Nuclear Structure and Dynamics (Cluster16)
    • Place of Presentation
      Napoli, Italy
    • Year and Date
      2016-05-23
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] テンソル最適化反対称化分子動力学による4Heの励起状態2016

    • Author(s)
      須原唯広、明孝之、土岐博、堀内昶、池田清美
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
  • [Presentation] テンソル最適化反対称化分子動力学を用いたp殻核の研究2015

    • Author(s)
      須原唯広、明孝之、土岐博、堀内昶、池田清美
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      大阪市立大
    • Year and Date
      2015-09-25
    • Related Report
      2015 Research-status Report
  • [Presentation] 12C, 16Oにおけるクラスター構造とモノポール遷移2015

    • Author(s)
      須原唯広
    • Organizer
      RCNP研究会「アイソスカラー型単極遷移で探る原子核の励起状態とクラスター構造」
    • Place of Presentation
      大阪大学RCNP
    • Year and Date
      2015-07-16
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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