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Mean specific intensity of radiation in cylindrical and spherical plasmas

Published online by Cambridge University Press:  08 January 2009

V.I. Fisher*
Affiliation:
Faculty of Physics, Weizmann Institute of Science, Rehovot, Israel
I.R. Almiev
Affiliation:
Faculty of Physics, Weizmann Institute of Science, Rehovot, Israel
L.L. Weingarten
Affiliation:
Faculty of Physics, Weizmann Institute of Science, Rehovot, Israel
Y. Maron
Affiliation:
Faculty of Physics, Weizmann Institute of Science, Rehovot, Israel
*
Address correspondence and reprint requests to: V.I. Fisher, Faculty of Physics, Weizmann Institute of Science, Rehovot 76100, Israel. E-mail: [email protected]

Abstract

We present an easy-to-use formula for mean (space- and direction-average) specific intensity of radiation in uniform spherical and cylindrical plasmas, which are not under external irradiation. This formula has high accuracy in any spectral interval dν taken in continuum as well as within a spectral line of any profile, including overlapping lines and lines on a pedestal of intense continuum in any spectral range. The formula considerably accelerates self-consistent computations of the radiation field and the distribution of ions over their ionization degrees and quantum states. It may also be used for computations of any radiation dependent-quantity, for example, the photoionization probability.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2009

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References

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