8-12 July 2013
Africa/Johannesburg timezone
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Theoretical Study of Positron States in Barium Flouride using Independent Particle Model and Generalized Gradient Approximation

Presented by Mr. Thulani JILI on 9 Jul 2013 from 17:40 to 18:40
Type: Poster Presentation
Session: Poster1
Track: Track A - Division for Condensed Matter Physics and Materials

Abstract

High momentum components of positron-electron annihilation radiation are in general related to the annihilations of core electrons with positrons. A theoretical approach is conducted to study the contributions of low to high momentum components of electron-positron momentum density in ionic barium flouride. Annihilation rates are calculated within the Independent Particle Model (IPM) and Generalized Gradient Approximation (GGA). Defect and defect-free zones annihilation rates are also considered.

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