Self-broadening and exciton line shifts in gases: Beyond the local-field approximation
- 1 January 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 49 (1), 146-155
- https://doi.org/10.1103/physreva.49.146
Abstract
The dielectric function and the absorption line shape of a gas of polarizable atoms are calculated using numerical simulations and analytical approximations. The theory of self-broadening is recast in the framework of disordered excitons. The shift, width, and asymmetry of the absorption line shape are calculated and compared with recent experiments on potassium gas.Keywords
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