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Proceedings Paper

Velocity-dependent collision frequency effects in nonlinear spectroscopy of plasma
Author(s): A. I. Chernykh; E. V. Podivilov; D. A. Shapiro
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Paper Abstract

We investigate the line narrowing in dense plasmas due to ion- ion scattering. Landau term include velocity dependence of the effective transport collision frequency that makes the problem more complicated that the Dicke narrowing in gases. The collision process is analytically described as a diffusion in the velocity space. It is shown that the atomic density matrix can be calculated by decomposition over orthogonal polynomials. The analytical results are obtained in limiting cases of short and long wavelength compared with the mean free path of an ion. For intermediate case a simple interpolation formula, based on numerical calculation, is proposed having an accuracy within 10% both for absorption linewidth and anomalous refractive index. The conditions for experimental observation of the narrowing are discussed.

Paper Details

Date Published: 21 October 1998
PDF: 6 pages
Proc. SPIE 3485, 11th International Vavilov Conference on Nonlinear Optics, (21 October 1998); doi: 10.1117/12.328288
Show Author Affiliations
A. I. Chernykh, Institute of Automation and Electrometry (Russia)
E. V. Podivilov, Institute of Automation and Electrometry (Russia)
D. A. Shapiro, Institute of Automation and Electrometry (Russia)

Published in SPIE Proceedings Vol. 3485:
11th International Vavilov Conference on Nonlinear Optics
Sergei G. Rautian, Editor(s)

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