Positrons in alkali halides

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Proper symmetry wavefunctions for positrons in alkali halide crystals are calculated through a plane wave expansion. The band contributions to the effective masses are given. The anisotropies in the momentum distribution due to annihilations in the band states are examined, and the relative importance of anions and cations to annihilation events is assessed. The diffusion of positrons is discussed within a polaron picture, and some previously proposed models for the origin of the longer-lived lifetime component are dealt with.
Original languageEnglish
Pages (from-to)2077-2084
Number of pages8
JournalJournal of Physics C: Solid State Physics
Issue number13
Publication statusPublished - 1975
MoE publication typeA1 Journal article-refereed


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