Theory on the Anomalous Asymmetric Scattering of the Spin-Polarized He+ Beam with Paramagnetic Target Materials
Project/Area Number |
15K05237
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Atomic/Molecular/Quantum electronics
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Research Institution | 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科学センター(研究開発 |
Principal Investigator |
Yanagimachi Osamu 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科学センター(研究開発, 総合科学研究センター, 特任研究員 (60005957)
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Research Collaborator |
Suzuki Taku T. 物質・材料研究機構, 主席研究員
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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 |
¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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Keywords | 放射線・X線・粒子線 / 量子ビーム / 1価ヘリウムビーム / スピン非対称性散乱 / 放射線・X線・粒子線 / He+ビーム / He+ビーム |
Outline of Final Research Achievements |
The scattering of an electron-spin-polarized He+ beam on paramagnetic materials has an anomalously large asymmetric scattering component (ASC) around 10% which is 10000 times that expected from the spin-orbit coupling for the potential of the target nucleus. The scattering angle θ dependence of the ASC has been measured. It changes sign near 90° for some materials (for example, Au), while it does not change sign for other materials (for example, Pb). It is noted in this study that the spin-orbit interaction of electrons on the target in the electron-transfer intermediate state causes the ASC of He nucleus motion. The sign change appears in the weak-resonance domain in the case of d electron excitation, whereas the sign change disappears in the strong-resonance domain. Calculated results qualitatively agree with the material dependence of the ASC observed experimentally.
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Report
(4 results)
Research Products
(18 results)
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[Journal Article] Pressure-induced anomalous valence crossover in cubic YbCu5-based compounds2017
Author(s)
H. Yamaoka, N. Tsujii, M.T. Suzuki, Y. Yamamoto, I. Jarrige, H. Sato, J.F. Lin, T. Mito, J. Mizuki, H. Sakurai, O. Sakai, N. Hiraoka, H. Ishii, K.D. Tsuei, M. Giovannini, E. Bauer
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Journal Title
Scientific Reports
Volume: 7
Issue: 1
Pages: 5846-5846
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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