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Path Integral Formalism for Line Broadening in Plasmas: Lyman‐ α case
Author(s) -
Bedida N.,
Meftah M. T.,
Difallah M.
Publication year - 2014
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201400009
Subject(s) - physics , autocorrelation , plasma , formalism (music) , spectral line , dipole , path integral formulation , computational physics , atomic physics , quantum electrodynamics , quantum mechanics , mathematics , art , musical , statistics , visual arts , quantum
Abstract Using the path integral formalism, the fine structure and dynamics effects are taken into account for the study of the spectral line broadening in plasmas. A compact expression of the dipolar autocorrelation function (DAF) for an emitter in the plasma is derived for Lyman alpha lines with fine structure. The expression of the DAF takes into account the dynamics effects, which are represented by the time autocorrelation function of the electric microfield. The spectral line for the Lyman‐alpha case has been obtained in a compact form and plotted in the quasi‐static approximation and compared to a line obtained by a simulation. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)