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Advances in Materials Science and Engineering
Volume 2014 (2014), Article ID 746742, 4 pages
http://dx.doi.org/10.1155/2014/746742
Research Article

Spontaneous Emission of an Excited Atom in a Dusty Unmagnetized Plasma Medium

Plasma Physics Research School, Plasma Science & Technology Research Institute, Tehran 14399-51113, Iran

Received 19 August 2013; Accepted 3 March 2014; Published 31 March 2014

Academic Editor: Necdet Aslan

Copyright © 2014 Naser Alinejad and Noushin Pishbin. 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

Investigation of spontaneous decay of an excited atom in dusty unmagnetized plasma is presented in this paper. The transverse contribution to the decay rate is normally associated with spontaneous emission. The rate of spontaneous emission can be obtained by Fermi’s golden rule. In this calculation, the transverse contribution to dielectric permittivity and Green function technique are used. Calculation of the decay rate of atoms is applicable to understand the particular structure of the vacuum state of the electromagnetic field.