| Project/Area Number |
18H03477
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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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| Review Section |
Basic Section 80040:Quantum beam science-related
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| Research Institution | Institute for Molecular Science (2020)
National Institute of Advanced Industrial Science and Technology (2018-2019) |
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Principal Investigator |
Taira Yoshitaka 分子科学研究所, 極端紫外光研究施設, 准教授 (60635803)
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| Co-Investigator(Kenkyū-buntansha) |
神門 正城 国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所 光量子科学研究部, グループリーダー(定常) (50343942)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2018: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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| Keywords | 光渦 / ガンマ線渦 / 軌道角運動量 / トムソン散乱 / コンプトン散乱 / ガンマ線 / Ｘ線 / 非線形コンプトン散乱 |
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| Outline of Final Research Achievements |
During this research period, we succeeded in detecting the helical wavefront of X-rays by diffraction from a triangular aperture for the first time in the world, and also demonstrated both theoretically and experimentally that it is possible to generate light with a phase structure in an elliptically polarized undulator. At the Kansai Photon Science Institute, we conducted experiments on the generation of gamma-ray vortices forming helical wavefronts by nonlinear inverse Compton scattering using an intense circularly polarized laser, but we were unable to measure the annular intensity distribution, which is a characteristic feature of gamma-ray vortices.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では、ガンマ線渦の発生と計測手法確立のための研究開発を行ってきた。三角開口を用いたX線渦のらせん波面検出は、干渉法以外でらせん波面を検出できる最も簡便な方法である。楕円偏光アンジュレータを用いた光渦の発生方法は、位相構造を連続的に変化できる光を発生することが可能となり、円偏光レーザーを用いた非線形逆コンプトン散乱にも適用可能な技術である。
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