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Journal of Atomic, Molecular, and Optical Physics
Volume 2011 (2011), Article ID 850807, 8 pages
http://dx.doi.org/10.1155/2011/850807
Research Article

Spectral Line Broadening in Dense Plasmas

Institut für Physik, Universität Rostock, Universitätsplatz 3, 18051 Rostock, Germany

Received 20 October 2010; Accepted 25 January 2011

Academic Editor: Elliot P. Kanter

Copyright © 2011 Banaz Omar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Spectral line broadening is calculated based on a microscopic quantum statistical approach. By using thermodynamic Green's function, plasma correlation effect, electrostatic and dynamic screening, and perturber-radiator interaction are taken into account. Ions are treated in quasistatic approximation due to Stark effect. The line broadening for 6678 Å (21P-31D) and 5016 Å (21S-31P) transitions of neutral helium is calculated in the electron density range and temperature range , and the density and temperature dependence of the line width are investigated. A good agreement is shown by comparing the calculated values with the existing experimental and theoretical data.