| Project/Area Number |
15H03665
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
|---|
| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
|---|
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)
|
|---|
| 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)
|
|---|
| 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)
|
|---|
| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| 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)
|
|---|
| 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 |
|---|
| 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.
|
