Emissivity Calculations Under DCA-UTA Approximation for NLTE Plasmas

Emissivity Calculations Under DCA-UTA Approximation for NLTE Plasmas

Year:    2007

Communications in Computational Physics, Vol. 2 (2007), Iss. 6 : pp. 1085–1094

Abstract

A model is developed to calculate emission spectrum from plasmas in non-local-thermodynamic-equilibrium (NLTE). The populations are obtained with a Collisional Radiative Model and the spectrum is calculated with the Unresolved-Transition-Array (UTA) approximation. The present model is applied to the calculation of emissivity from low-, medium- and high-Z plasmas. The integrated emissivity and the spectra are compared with those calculated by other theoretical models. In general speaking, the present results of the mean charge state and emissivity agree well with some theoretical ones while large differences are found when all the theoretical results are included.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/2007-CiCP-7940

Communications in Computational Physics, Vol. 2 (2007), Iss. 6 : pp. 1085–1094

Published online:    2007-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    10

Keywords: