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Study of magnetic dopole transitions by linearly polarized gamma rays

Research Project

Project/Area Number 17K05482
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionNational Institutes for Quantum and Radiological Science and Technology

Principal Investigator

SHIZUMA Toshiyuki  国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 東海量子ビーム応用研究センター, 上席研究員(定常) (50282299)

Co-Investigator(Kenkyū-buntansha) 宮本 修治  兵庫県立大学, 高度産業科学技術研究所, 特任教授 (90135757)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords磁気双極子遷移強度 / 核共鳴蛍光散乱 / レーザーコンプトンガンマ線 / 核共鳴蛍光散乱実験
Outline of Final Research Achievements

Transmission nuclear resonance fluorescence measurements on the 2982-keV transition in Al-27 was carried out using a laser Compton scattering gamma-ray beam operating at the NewSUBARU synchrotron radiation facility at University of Hyogo. The results are consistent with the previously reported values, and we have confirmed that the method can be used for measurements of the total decay width. We also determined the multipolarity of the transitions in Ta-181 from the nuclear resonant fluorescence scattering data using linearly polarized gamma-rays and obtained the magnetic dipole (M1) transition probabilities. As a result, the total M1 reduced transition probability in the energy region is about 1/5 of the intensity of the scissors-mode M1 transition in the nearby even nuclei and the theoretical calculation, suggesting that strong fragmentation occurs for the scissors-mode M1 resonance levels in Ta-181.

Academic Significance and Societal Importance of the Research Achievements

シザースモードM1遷移に関する実験では、これまで、遷移の多重極度の直接測定がほとんど行われておらず、直線偏光ガンマ線を用いて遷移の多重極度を精度良く決定することは、M1遷移強度を決定する上で重要である。また、シザースモードM1共鳴は核子のハサミ状振動に起因した集団運動によるものであり、その微視的構造を明らかにすることにより、有限量子多体系である原子核の理解が進むものと考えられる。さらに、シザースモードなどの低エネルギーM1遷移の強度は、宇宙元素合成における核種の生成率に影響を与えることからも、シザースモードM1共鳴の微視的構造を明らかにすることは重要である。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (29 results)

All 2021 2020 2019 2018 2017

All Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results) Presentation (21 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Low-lying electric and magnetic dipole strengths in Pb2072021

    • Author(s)
      Shizuma T.、Minato F.、Omer M.、Hayakawa T.、Ohgaki H.、Miyamoto S.
    • Journal Title

      Physical Review C

      Volume: 103 Issue: 2 Pages: 024309-024309

    • DOI

      10.1103/physrevc.103.024309

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Compton scattering of quasi-monochromatic γ-ray beam2020

    • Author(s)
      Omer Mohamed、Shizuma Toshiyuki、Hajima Ryoichi
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 951 Pages: 162998-162998

    • DOI

      10.1016/j.nima.2019.162998

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin and parity determination of the 3.004-MeV level in Al27: Its low-lying multiplet structure2019

    • Author(s)
      Shizuma T.、Omer M.、Hajima R.、Shimizu N.、Utsuno Y.
    • Journal Title

      Physical Review C

      Volume: 100 Issue: 1 Pages: 014307-014307

    • DOI

      10.1103/physrevc.100.014307

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Measurements of Neutrons from Photonuclear Reactions Using Laser Compton Scattering Gamma Rays2018

    • Author(s)
      MIYAMOTO Shuji、TAKEMOTO Akinori、YAMAGUCHI Masashi、SUGITA Kento、HASHIMOTO Satoshi、AMANO Sho
    • Journal Title

      Plasma and Fusion Research

      Volume: 13 Issue: 0 Pages: 2404066-2404066

    • DOI

      10.1585/pfr.13.2404066

    • NAID

      130007437745

    • ISSN
      1880-6821
    • Year and Date
      2018-06-15
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Dipole strength distribution in Pb 206 for the evaluation of the neutron capture cross section of Pb 2052018

    • Author(s)
      Shizuma T.、Iwamoto N.、Makinaga A.、Massarczyk R.、Schwengner R.、Beyer R.、Bemmerer D.、Dietz M.、Junghans A.、Kogler T.、Ludwig F.、Reinicke S.、Schulz S.、Urlas S.、Wagner A.
    • Journal Title

      Physical Review C

      Volume: 98 Issue: 6

    • DOI

      10.1103/physrevc.98.064317

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evaluation of neutron capture cross section on 205Pb with photonuclear data2018

    • Author(s)
      Iwamoto Nobuyuki、Shizuma Toshiyuki
    • Journal Title

      EPJ Web of Conferences

      Volume: 178 Pages: 06004-06004

    • DOI

      10.1051/epjconf/201817806004

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Astrophysical relevance of the low-energy dipole strength of 206Pb2018

    • Author(s)
      Tonchev A.P.、Tsoneva N.、Goriely S.、Bhatia C.、Arnold C.W.、Hammond S.L.、Kelley J.H.、Kwan E.、Lenske H.、Piekarewicz J.、Raut R.、Rusev G.、Shizuma T.、Tornow W.
    • Journal Title

      EPJ Web of Conferences

      Volume: 178 Pages: 04003-04003

    • DOI

      10.1051/epjconf/201817804003

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Status of nuclear data for nuclear resonance fluorescence2018

    • Author(s)
      T.Shizuma
    • Journal Title

      JAEA Conf

      Volume: 1 Pages: 7-11

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 核共鳴蛍光散乱を用いた181Taの共鳴準位のスピン・パリティの測定2021

    • Author(s)
      静間 俊行, M.Omer, 羽島 良一
    • Organizer
      日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 直線偏光ガンマ線を用いたTa-181の核共鳴蛍光散乱実験2020

    • Author(s)
      静間 俊行, M. Omer, 羽島 良一
    • Organizer
      日本原子力学会秋の年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 直線偏光ガンマ線を用いたTa-181の核共鳴蛍光散乱実験2020

    • Author(s)
      静間俊行、M.Omer、羽島良一
    • Organizer
      日本原子力学会春の年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Results of Measurements at the NewSUBARU and HIgS Facilities2020

    • Author(s)
      Toshiyuki Shizuma
    • Organizer
      Workshop on demonstration of nuclear resonance fluorescence technique for detection of nuclear material hidden in a shield
    • Related Report
      2019 Research-status Report
  • [Presentation] 直線偏光ガンマ線を用いた 奇核のスピン・パリティの測定2020

    • Author(s)
      静間俊行
    • Organizer
      核データ測定戦略検討WG
    • Related Report
      2019 Research-status Report
  • [Presentation] 鉛領域核の中性子、光核データの測定2020

    • Author(s)
      静間俊行、遠藤駿典、湊太志、木村敦、岩本信之、岩本修
    • Organizer
      加速器を用いた分離変換研究に関する研究交流会
    • Related Report
      2019 Research-status Report
  • [Presentation] 準単色・偏極ガンマ線の発生と利用研究2020

    • Author(s)
      宮本修治
    • Organizer
      第236回 フォトポリマー懇話会
    • Related Report
      2019 Research-status Report
  • [Presentation] レーザーコンプトンガンマ線を用いたNi-58の核共鳴蛍光散乱実験2019

    • Author(s)
      静間俊行、モハマドオマル、早川岳人、湊太志、松葉俊哉、大垣英明、宮本修治
    • Organizer
      日本原子力学会秋の大会
    • Related Report
      2019 Research-status Report
  • [Presentation] ADS核変換のための鉛領域核の中性子データ測定2019

    • Author(s)
      静間俊行
    • Organizer
      加速器を用いた分離変換研究に関する研究交流会
    • Related Report
      2018 Research-status Report
  • [Presentation] レーザーコンプトンガンマ線を用いたAl-27の核共鳴蛍光散乱実験2019

    • Author(s)
      静間俊行、M. Omer、羽島良一、小泉光生、宇都野穣
    • Organizer
      日本物理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 制動放射光を用いた鉛206 の共鳴散乱断面積の測定2019

    • Author(s)
      静間俊行、岩本信之、牧永綾乃、Massarczyk R.、Schwengner R.、Beyer R.、Bemmerer D.、Dietz M.、Junghans A.、Kogler T.、Ludwig F.、Reinicke S.、Schulz S.、Urlas S.、Wagner A.
    • Organizer
      日本原子力学会
    • Related Report
      2018 Research-status Report
  • [Presentation] γ線ビームラインの開発とそれを用いた量子ビーム核科学研究推進2019

    • Author(s)
      宮本修治
    • Organizer
      放射線利用総合シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] ガンマ線トラッキング検出器の開発と性能評価2019

    • Author(s)
      甲田旭、 山本康嵩、青井考、井手口栄治、M. Kumar Raju、Hoang Thi Ha、Tung Thanh Pham、嶋達志、宮本修治、静間俊行、Viljamaa Topi Benjamin、Kathrin Wimmer、Pieter Doornenbal、Martha Liliana Cortes、今井明、Jongwon Hwang
    • Organizer
      日本物理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 直線偏光ガンマ線を用いたAl-27の核共鳴蛍光散乱実験2018

    • Author(s)
      静間俊行、M.Omer、羽島良一、小泉光生
    • Organizer
      日本原子力学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 核共鳴蛍光散乱を用いた核物理と応用2018

    • Author(s)
      静間俊行
    • Organizer
      ILCの多角的活用を考える会II
    • Related Report
      2018 Research-status Report
  • [Presentation] Development of a gamma-ray tracking detector and its performance test2018

    • Author(s)
      Asahi Kohda, Nori Aoi, Yasutaka Yamamoto, Eiji Ideguchi, Mukhi Kumar Raju, Hoang Thi Ha, Tung Thanh Pham, Tatsushi Shima, Viljamaa Topi Benjamin, Shuji Miyamoto, Toshiyuki Shizuma, Nobuaki Imai, Kathrin Wimmer, Pieter Doornenbal, Rudrajyoti Palit
    • Organizer
      日本物理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] γ線Tracking検出器の開発と性能評価2018

    • Author(s)
      甲田 旭、青井 考、山本康嵩、井手口栄治、M. Kumar Raju Hoang Thi Ha、Tung Thanh Pham、嶋達志、柳原陸斗、Viljamaa Topi Benjamin, 宮本修治, 静間俊行
    • Organizer
      日本物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] NewSUBARU BL01ビームラインの整備と実験2018

    • Author(s)
      宮本 修治
    • Organizer
      日本原子力学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 核共鳴蛍光散乱を用いた 206Pbの双極子遷移強度の測定2017

    • Author(s)
      静間俊行
    • Organizer
      日本原子力学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Evaluation of neutron capture cross section on 205Pb with photonuclear data2017

    • Author(s)
      N.Iwamoto, T.Shizuma
    • Organizer
      16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Status of nuclear data for nuclear resonance fluorescence2017

    • Author(s)
      T.Shizuma
    • Organizer
      Internation nuclear data symposium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2017-04-28   Modified: 2022-01-27  

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