Many-Body Enhancement Effects on the 2D ACAR in Chromium
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概要
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The electron-positron many-body enhancement effect on the two-dimensionalangular correlation distribution of positron annihilation radiation (2D ACAR) inchromium is phenomelogically investigated. The enhancement parameters are defermined so as to obtain the best fit of the theoretical 2D ACAR to the experimental one.Two kinds of enhancement are considered. The first is a state-dependent one. In thisscheme two enhancement factors are used for s-p electrons and 7-electrons. For ahybridized state the value of enhancement is decided by a weighted mean of those twofactors according to their partial populations in the state. The other is a characterdependent one. In this scheme two enhancement factors are also used, but they areused to scale the partial wave functions in the electron wave coupled to the positron.The result using the character-dependent enhancement is very good, while that usingthe state-dependent one is not so good.
- 社団法人日本物理学会の論文
- 1987-10-15
著者
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MATSUMOTO Makoto
University of Library and In formation Science
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Wakoh Shinya
University Of Library And Information Science
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Wakoh Shinya
Department Of Mathematics Imperial College:the Institute For Solid State Physics The University Of T
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Wakoh Shinya
Department Physics University Of Warwick:university Of Library And Information Science
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