Simple model of Na D -line shape in sonoluminescence spectra

Author: Kazachek M.   Gordeychuk T.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 1063-7850

Source: Technical Physics Letters, Vol.37, Iss.3, 2011-03, pp. : 262-266

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Abstract

A model explaining the Na D-line shape in sonoluminescence (SL) spectra is proposed, which is based on the hypothesis that a complicated profile of this line (involving shift, broadening, asymmetry, and parent emission peaks) is formed due to superposition of the spectra of SL generated at different densities of a perturbing medium. Simulations of the experimental spectra by model allow one to make a conclusion about the character of density variations during the emission, and to determine the interval of densities in which the emission from Na atoms occurs. In this same context, the profile of the potassium SL line is considered. It is suggested that the proposed model is applicable to any atoms in a dense variable environment.