Study on Spin Precession of Polarized Slow Positrons in Solids
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概要
- 論文の詳細を見る
We have investigated spin precession mechanisms of polarized slow positrons in materials caused by multiple Coulomb scatterings, Bhabha scatterings and bremsstrahlungs. It is found that the degree of depolarization is strongly dependent on the atomic number of materials, and the depolarizations caused by the Bhabha scatterings and the bremsstrahlungs are negligible compared with those caused by multiple Coulomb scatterings. By incorporating the theoretical formulations of spin precession due to the three processes mentioned above into a Monte-Carlo simulation program, we can successfully describe depolarizations of polarized slow-positron beams in materials, i.e. a target, an absorber, and a moderator which are utilized for slow-positron production facilities. The magnitudes of the polarizations thus estimated are in good agreement with experimental measurements.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 1997-06-15
著者
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Yang Jinfeng
Department Of Physics Tokyo Metropolitan University
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Hirose Tachishige
Department Of Physics Faculty Of Science Tokyo Metropolitan University
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Hamatsu Ryosuke
Department Of Physics Faculty Of Science Tokyo Metropolitan University
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Kumita Tetsuro
Department Of Physics Tokyo Metropolitan University
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Irako Mitsuhiro
Department Of Physics Faculty Of Science Tokyo Metropolitan University
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Chiba Masami
Deparment Of Physics Tokyo Metropolitan University Tokyo
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Chiba Masami
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
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Hirose Tachishige
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
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Kumita Tetsuro
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
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Irako Mitsuhiro
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
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Yang Jinfeng
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
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Hamatsu Ryosuke
Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
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