New probe for neutron anisotropy generated by linearly polarized gamma-rays
| Project/Area Number |
15H03665
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
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Principal Investigator |
Hayakawa Takehito 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) (70343944)
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| Co-Investigator(Kenkyū-buntansha) |
梶野 敏貴 国立天文台, 理論研究部, 准教授 (20169444)
静間 俊行 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)
緒方 一介 大阪大学, 核物理研究センター, 准教授 (50346764)
宮本 修治 兵庫県立大学, 高度産業科学技術研究所, 教授 (90135757)
菊地 右馬 大阪市立大学, 大学院理学研究科, 特任講師 (00648024)
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| Co-Investigator(Renkei-kenkyūsha) |
AMANO Sho 兵庫県立大学, 高度産業科学技術研究所, 助教 (50271200)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2015: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
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| Keywords | レーザーコンプトン散乱γ線 / 光核反応 / 直線偏光ガンマ線 / 超新星ニュートリノ過程 / M1遷移強度 / ニュートリノ過程 / 884 / レーザーコンプトン散乱ガンマ線 |
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| Outline of Final Research Achievements |
In 1957, Agodi predicted that the neutron angular distribution in (gamma, n) reactions with a 100% linearly polarized gamma-ray beam for dipole excitation should be anisotropic and universally described by the simple function of a + b cos(2φ) at the polar angle θ=90 degree, where θ is the azimuthal angle. However, this prediction has not been experimentally confirmed in over half a century. We have measured the azimuthal anisotropy of neutrons emitted from the 56Fe(gamma, n)55Fe reaction with a linearly polarized gamma-ray beam generated by laser Compton scattering with laser on a single bunch electron with an energy of 1 GeV stored the NewSUBARU synchrotron radiation ring. The azimuthal anisotropy of the neutrons has been well reproduced using a theoretically predicted function of a + b cos(2φ). We have calculated the anisotropy on 9Be considering the nuclear structures. The result indicates that the anisotropy is sensitive to the excitation station.
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Report
(4 results)
Research Products
(14 results)
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[Journal Article] 6.Spatial anisotropy of neutrons emitted from the 56Fe(gamma,n)55Fe reaction with linearly polarized gamma ray beam2016
Author(s)
T. Hayakawa, T. Shizuma, S. Miyamoto, S. Amano, A. Takemoto, M. Yamaguchi, K. Horikawa, H. Akimune, S. Chiba, K. Ogata, and M. Fujiwara
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Journal Title
Physica Review C
Volume: 93
Issue: 4
Pages: 044313-044313
DOI
Related Report
Peer Reviewed
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[Journal Article] Measurement of the isomer production ratio for the 112Cd(n,γ )113Cd reaction using neutron beams at J-PARC2016
Author(s)
T. Hayakawa, Y. Toh, M. Huang, T. Shizuma, A. Kimura, S. Nakamura, H. Harada, N. Iwamoto, S. Chiba, and T. Kajino
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Journal Title
PHYSICAL REVIEW C
Volume: 94
Issue: 5
Pages: 055803-055803
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Enhanced diffraction of MeV γ-rays by mosaic crystals2016
Author(s)
Shunya Matsuba, Takehito Hayakawa, Toshiyuki Shizuma, Nobuyuki Nishimori, Ryoji Nagai, Masaru Sawamura, Christopher T. Angell, Mamoru Fujiwara, and Ryoichi Hajima
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Journal Title
Japanese Journal of Applied Physics
Volume: 55
Issue: 11
Pages: 112402-112402
DOI
NAID
Related Report
Peer Reviewed / Acknowledgement Compliant
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