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Photodisintegration of deuterium by linearly polarized gamma rays

Research Project

Project/Area Number 16340080
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionKONAN UNIVERSITY

Principal Investigator

UTSUNOMIYA Hiroaki  KONAN UNIVERSITY, DEPARTMENT OF PHYSICS, PROFESSOR, 理工学部, 教授 (00241167)

Co-Investigator(Kenkyū-buntansha) AKIMUNE Hidetoshi  KONAN UNIVERSITY, DEPARTMENT OF PHYSICS, ASSOCIATE PROFESSOR, 理工学部, 助教授 (60319829)
TOYOKAWA Hiroyuki  NATIONAL INSTUTUTE OF ADVANCED INDUSTRIAL SCIEINCE AND TECHNOLOGY, RESEARCH INSTITUTE OF INSTRUMENTATION FRONTIER, RESEARCHER, 計測フロンティア研究部門, 研究員 (80357582)
HARANO Hideki  NATIONAL INSTUTUTE OF ADVANCED INDUSTRIAL SCIEINCE AND TECHNOLOGY, NATIONAL METROLOGY INSTITUTE OF JAPAN, RESEARCHER, 計測標準研究部門, 研究員 (60302775)
MATSUMOTO Tetsuro  NATIONAL INSTUTUTE OF ADVANCED INDUSTRIAL SCIEINCE AND TECHNOLOGY, NATIONAL METROLOGY INSTITUTE OF JAPAN, RESEARCHER, 計測標準研究部門, 研究員 (70415793)
芳原 新也  甲南大学, 理工学部, 科研研究員
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 2006: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2005: ¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 2004: ¥4,900,000 (Direct Cost: ¥4,900,000)
Keywordsexperimental nuclear physics / linearly polarized photons / photodisintegration of deuterium / photonuclear reactions / big bang nucleosynthesis / 直線偏光γ線源 / 光核反応 / 核合成 / 宇宙核物理 / レーザー逆コンプトンガンマ線 / 放射光施設 / 重陽子 / 直線偏光ガンマ線 / 中性子角度分布 / E1 M1 / ビッグバン元素合成 / レーザー逆コンプトン散乱 / 産業技術総合研究所
Research Abstract

Linearly polarized γ rays were produced in the inverse Compton scattering of linearly polarized photons from a Nd : YVO_4 laser with relativistic electrons in the storage ring TERAS at the National Institute of Advanced Industrial Science and Technology. An encapsulated deuterated liquid scintillator (BICRON BC-537) was irradiated with polarized γ ray beams at 2.5 and 3.0 MeV. The target scintillator served as an active target. Four neutron detectors, each consisting of five ^3He proportional counters embedded in a polyethylene were mounted at 90° with respect to the y-ray beam; a pair of neutron detectors was mounted parallel to the electric field of the linearly polarized γ rays and the other pair was mounted perpendicular to the electric field. Anisotopic neutron emissions were observed in the photodisintegration of deuterium. The ratio of M1 and E1 components in photodisintegration of deuterium was determined from the anisotropy. Cross talks of neutron events between the detectors were simulated with a Monte Carlo code MCNP. The cross-talk effect was taken into account in the data analysis. It was found that the ratio is consistent with theoretical predictions at both energies. We will perform a systematic measurement of the M1 and E1 photodisintegration of deuterium in the energy region of direct relevance to big bang nucleosynthesis.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (26 results)

All 2007 2006 2005 2004

All Journal Article (25 results) Book (1 results)

  • [Journal Article] Photonuclear cross sections of astrophysical significance2007

    • Author(s)
      H.Utsunomiya
    • Journal Title

      Proc.of Int.Symp. (Tours Symposium on Nuclear Physics VI), AIP Conference Proceedings (New York : AIP) 891

      Pages: 329-338

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photonuclear cross sections of astrophysical significance2007

    • Author(s)
      H.Utsunomiya
    • Journal Title

      AIP Conference Proceedings 891

      Pages: 329-329

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Photodisintegration of 80Se and its implications for s-process branching2007

    • Author(s)
      A.Makinaga, H.Utsunomiya, H.Akimune, H.Toyokawa 他8名
    • Journal Title

      AIP Conference Proceedings 891 891

      Pages: 431-431

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Direct determination of photodisintegration cross sections and the p-process2006

    • Author(s)
      H.Utsunomiya, P.Mohr, A.Zilges, M.Rayet
    • Journal Title

      Nucl. Phys. A777

      Pages: 459-459

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Partial Photoneutron Cross Sections for the Isomeric State ^<180>Ta^m2006

    • Author(s)
      S.Goko, H.Utsunomiya, S.Goriely, A.Makinaga, T.Kaihori, S.Hohara, H.Akimune, T.Yamagata
    • Journal Title

      Phys. Rev. Lett. 96

      Pages: 192501-192501

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photoneutron cross section measurements on the N-82 nuclei ^<139>La and ^<141>Pr : Implications for p-process nucleosynthesis2006

    • Author(s)
      H.Utsunomiya, A.Makinaga, S.Goko, T.Kaihori, H.Akimune, T.Yamagata, M.Ohta, H.Toyokawa, S.Muller, Y.-W.Lui, S.Goriely
    • Journal Title

      Phys. Rev. C 74

      Pages: 25806-1

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Direct determination of photodisintegration cross sections and the p-process2006

    • Author(s)
      H.Utsunomiya, P.Mohr, A.Zilges, M.Rayet
    • Journal Title

      Nucl.Phys. A777

      Pages: 459-478

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Partial Photoneutron Cross Sections for the Isomeric State ^<180>Ta^m2006

    • Author(s)
      S.Goko, H.Utsunomiya, S.Goriely, A.Makinaga, T.Kaihori, S.Hohara, H.Akimune, T.Yamagata, Y.-W.Lui, H.Toyokawa, A.J.Koning, S.Hilaire
    • Journal Title

      Phys.Rev.Lett. 96

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photoneutron cross section measurements on the N-82 nuclei ^<139>La and ^<141>Pr : Implications for p-process nucleosynthesis2006

    • Author(s)
      H.Utsunomiya, A.Makinaga, S.Goko, T.Kaihori, H.Akimune, T.Yamagata, M.Ohta, H.Toyokawa, S.Muller, Y.-W.Lui, S.Goriely
    • Journal Title

      Phys.Rev. C74

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photonuclear Reactions in Astrophysics2006

    • Author(s)
      H.Utsunomiya
    • Journal Title

      Nuclear Physics Trends, Proc. 6^<th> China-Japan Joint Nuclear Physics Symposium, AIP Proceedings 865

      Pages: 208-214

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Direct determination of photodisintegration cross sections and the p-process2006

    • Author(s)
      H.Utsunomiya 他3名
    • Journal Title

      Nuclear Physics A777

      Pages: 459-459

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Partial Photoneutron Cross Sections for the Isomeric State ^<180>Ta2006

    • Author(s)
      S.Goko, H.Utsunomiya, H.Akimune, H.Toyokawa 他8名
    • Journal Title

      Physical Review Letters 96

      Pages: 192501-192501

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Photoneutron cross section measurements on the N-82 nuclei ^<139>La and ^<141>Pr : Implications for p-process nucleosynthesis2006

    • Author(s)
      H.Utsunomiya, H.Akimune, H.Toyokawa 他8名
    • Journal Title

      Physical Review C

      Pages: 25806-25806

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Photonuclear Reactions in Astrophysics2006

    • Author(s)
      H.Utsunomiya
    • Journal Title

      AIP Proceedings 865

      Pages: 208-208

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Ten-tesla superconducting wiggler at SPring-8 as a photon source for nuclear astrophysics2005

    • Author(s)
      H.Utsunomiya, S.Goko, K.Soutome, N.Kumagai, H.Yonehara
    • Journal Title

      Nucl. Instr. Meth. Phys. Res. A548

      Pages: 225-225

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photodisintegration cross section measurements on ^<186>W, ^<187>Re, and ^<188>Os; Implications for the Re-Os cosmochronology2005

    • Author(s)
      T.Shizuma, H.Utsunomiya, P.Mohr, T.Hayakawa, S.Goko, A.Makinaga, H.Akimune, T.Yamagata, M.Ohta, H.Ohgaki, Y.-W.Lui, H.Toyokawa, A.Uritani, S.Goriely
    • Journal Title

      Phys. Rev. 72

      Pages: 25808-25808

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Ten-tesla superconducting wiggler at SPring-8 as a photon source for nuclear astrophysics2005

    • Author(s)
      H.Utsunomiya, S.Goko, K.Soutome, N.Kumagai, H.Yonehara
    • Journal Title

      Nucl.Instr.Meth.Phys.Res. A538

      Pages: 225-233

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photodisintegration cross section measurements on ^<186>W, ^<187>Re, and ^<188>Os ; Implications for the Re-Os cosmochronology2005

    • Author(s)
      T.Shizuma, H.Utsunomiya, P.Mohr, T.Hayakawa, S.Goko, A.Makinaga, H.Akimune, T.Yamagata, M.Ohta, H.Ohgaki, Y.-W.Lui, H.Toyokawa, A.Uritani, S.Goriely
    • Journal Title

      Phys.Rev. C72

      Pages: 25808-25808

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photonuclear reaction studies at synchrotron radiation facilities in Japan2004

    • Author(s)
      H.Utsunomiya, K.Y.Hara, S.Goko, H.Akimune, T.Yamagata, M.Ohta, H.Ohgaki, H.Toyokawa, T.Hayakawa, T.Shizuma, P.Mohr, Y.-W.Lui, H.Ohkuma, H.Yonehara, K.Soutome, M.Arnould
    • Journal Title

      Nucl. Phys. A738

      Pages: 136-136

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] s-process branching at ^<185>W revised2004

    • Author(s)
      P.Mohr, T.Shizuma, H.Ueda, S.Goko, Makinaga, K., Y.Hara, T.Hayakawa, Y.-W.Lui, H.Ohgaki, H.Utsunomiya
    • Journal Title

      Phys. Rev. C69

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photonuclear reaction studies at synchrotron radiation facilities in Japan2004

    • Author(s)
      H.Utsunomiya, K.Y.Hara, S.Goko, H.Akimune, T.Yamagata, M.Ohta, H.Ohgaki, H.Toyokawa, T.Hayakawa, T.Shizuma, P.Mohr, Y.-W.Lui, H.Ohkuma, H.Yonehara, K.Soutome, M.Arnould
    • Journal Title

      Nucl.Phys. A738

      Pages: 136-142

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] s-process branching at ^<185>W revised2004

    • Author(s)
      P.Mohr, T.Shizuma, H.Ueda, S.Goko, A.Makinaga, K.Y.Hara, T.Hayakawa, Y.-W.Lui, H.Ohgaki, H.Utsunomiya
    • Journal Title

      Phys.Rev. C69

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Photoreaction Cross Section Measurements for Astrophysics2004

    • Author(s)
      H.Utsunomiya, S.Goko, K.Y.Hara, H.Akimune, T.Yamagata, M.Ohta, H.Ohgaki, H.Toyokawa, T.Hayakawa, T.Shizuma, Y.-W.Lui, P.Mohr
    • Journal Title

      Proc.of Int.Symp. (Tours Symposium on Nuclear Physics VI), AIP Conf.Proc. (New York : AIP) 704

      Pages: 439-446

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] New Generation of Photonuclear Reaction Studies for Astronuclear Physics2004

    • Author(s)
      H.Utsunomiya
    • Journal Title

      EAS Publication Series 11

      Pages: 235-237

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Measurement of Photo-Desctruction Cross Sections for ^<180>Ta at SPring-82004

    • Author(s)
      S.Goko, H.Utsunomiya
    • Journal Title

      Proc.of Int.Symp. (Tours Symposium on Nuclear Physics VI), AIP Conf.Proc. (New York : AIP) 704

      Pages: 546-550

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] Tours Symposium on Nuclear Physics VI (ISBN 978-0-7354-0395-6)2006

    • Author(s)
      H.Akimune, H.Utsunomiya 他6名
    • Total Pages
      464
    • Publisher
      American Institute of Physics
    • Related Report
      2006 Annual Research Report

URL: 

Published: 2004-04-01   Modified: 2016-04-21  

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