Abstract
Two-dimensional angular correlations of positron annihilation radiation in vanadium and chromium are calculated by the APW method. The results are compared with recent experimental data. The agreement between theory and experiment is very good. Some knowledge of positron-electron many-body correlations is obtained. The sp-like components are enhanced by many-body effect more than the d-like component, and the enhancement appears to be anisotropic in 3d transition metals.
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