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First-ever indirect measurement of the Big-bang nucleosynthesis reactions by the Trojan Horse method

Research Project

Project/Area Number 15K17631
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe University of Tokyo

Principal Investigator

Hayakawa Seiya  東京大学, 大学院理学系研究科(理学部), 特任研究員 (00747743)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords原子核物理学実験 / 宇宙核物理学 / トロイの木馬法 / 不安定核ビーム / ビッグバン元素合成
Outline of Final Research Achievements

In the first year of the three-year implementation period of this study, we designed the experiment based on simulations, and submitted a proposal to the Program Advisory Committee to make it passed. In the second year, we tested the detectors and prepared the experiment, and finally carried out the actual experiment at the heavy ion accelerator facility. The third year was basically for the analysis of the data obtained by the experiment.
By the data analysis, the energy dependence of the reaction cross sections, which is the first goal of this study, is going to be derived. Now we have most of the materials to conclude this study, and expect to submit a paper in the near future.
As the achievements of this study, 4 presentations at domestic academic conferences, 6 presentations at international conferences, 3 proceedings of these conferences, and 1 master's thesis have been made at present.

Report

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

    (13 results)

All 2018 2017 2016

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 1 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results)

  • [Journal Article] Feasibility Study for the 7Be+n Reaction Measurements by Trojan Horse Method at CRIB2017

    • Author(s)
      K. Abe, S. Hayakawa, H. Yamaguchi, and L. Lamia
    • Journal Title

      JPS Conference Proceedings

      Volume: 14

    • DOI

      10.7566/jpscp.14.020507

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Feasibility study for the 7Be+n reaction measurement by Trojan horse method at CRIB2017

    • Author(s)
      K. Abe, S. Hayakawa, H. Yamaguchi, and L. Lamia
    • Journal Title

      CNS Anuual Report 2015

      Volume: CNS-REP-95 Pages: 5-6

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Trials for the cosmological 7Li problem with 7Be beams at CRIB and collaborating studies2016

    • Author(s)
      S. Hayakawa
    • Journal Title

      IL NUOVO CIMENTO C

      Volume: 39

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Measurements of the neutron-induced reactions on 7Be with CRIB by the Trojan Horse method2018

    • Author(s)
      早川勢也
    • Organizer
      The 14th international symposium on Origin of Matter and Evolution of Galaxies (OMEG2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurements of the 7Be+n Big-Bang nucleosynthesis reactions at CRIB by the Trojan Horse method2018

    • Author(s)
      早川勢也
    • Organizer
      The 8th Nuclear Physics in Astrophysics International Conference (NPA8)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] トロイの木馬法による7Be+nビッグバン元素合成反応の測定 II2018

    • Author(s)
      早川勢也
    • Organizer
      日本物理学会 秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] CRIBでの7Beビームを用いたビッグバン元素合成反応の測定2018

    • Author(s)
      早川勢也
    • Organizer
      宇核連研究会「X 線天体と元素合成」
    • Related Report
      2017 Annual Research Report
  • [Presentation] トロイの木馬法による7Be+nビッグバン元素合成反応の測定2017

    • Author(s)
      早川勢也 et al.
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学豊中キャンパス(大阪府豊中市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Trials for the cosmological 7Li problem with 7Be beams at CRIB and collaborating studies2016

    • Author(s)
      S. Hayakawa
    • Organizer
      The 2nd Sicily-East Asia Workshop on Low-energy Nuclear Physics
    • Place of Presentation
      理化学研究所(埼玉県和光市)
    • Year and Date
      2016-06-26
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Feasibility Study for the 7Be+n Reaction Measurements by Trojan Horse Method at CRIB2016

    • Author(s)
      K. Abe, S. Hayakawa, H. Yamaguchi, and L. Lamia
    • Organizer
      14th International Symposium on Nuclei in the Cosmos XIV
    • Place of Presentation
      朱鷺メッセ(新潟県新潟市)
    • Year and Date
      2016-06-19
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Trojan horse method at CRIB for RI+n reactions2016

    • Author(s)
      早川勢也
    • Organizer
      8th Japan-Italy Symposium
    • Place of Presentation
      理化学研究所仁科センター(埼玉県和光市)
    • Year and Date
      2016-03-07
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Big-Bang+(CRIB, THM)2016

    • Author(s)
      早川勢也
    • Organizer
      宇宙核物理連絡協議会研究会
    • Place of Presentation
      国立天文台三鷹キャンパス(東京都三鷹市)
    • Year and Date
      2016-02-22
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Upcoming CRIB experiment: 7Be+n reaction measurements by the Trojan horse method2016

    • Author(s)
      S. Hayakawa
    • Organizer
      SKKU workshop
    • Place of Presentation
      水原 (韓国)
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2019-03-29  

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