Simulation of X-ray line transfer in a cylindrically expanding plasma.

Details Simulation of X-ray line transfer in a cylindrically expanding plasma. Simulation of X-ray line transfer in a cylindrically expanding plasma.

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jqsrt..57..683p&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 57, issue 5, pp. 683-694

Mathematics

Probability

15

Plasma: Radiative Transfer, Plasma: X-Ray Lines

Scientific paper

A method for calculating the X-ray resonance line emission from a cylindrically expanding laser-produced plasma is presented. A multi-frequency line transfer algorithm, incorporated as a post-processor to a time-dependent 1-D hydrodynamics and non-LTE atomic physics calculation, is used to compute spatially-resolved spectral profiles of the line emission. Coupling of photon re-absorption to ionic state populations is achieved by use of the escape probability method. The authors use the code to investigate the effects of high expansion velocities, and the influence of neighbouring lines, on the opacity and detailed shape of optically thick lines. As an example they consider the profile of the Lyman-α (1s-2p) resonance line of hydrogenic aluminium.

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