A revised algorithm for the computation of super-transition array spectra of hot dense plasmas.

Details A revised algorithm for the computation of super-transition array spectra of hot dense plasmas. A revised algorithm for the computation of super-transition array spectra of hot dense plasmas.

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jqsrt..61..813w&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 61, issue 6, pp. 813-823

Statistics

Computation

5

Plasma: Spectra

Scientific paper

The formula for computing bound-bound X-ray absorption from unresolved 'Super'-transition arrays is reformulated in terms of correlated occupation numbers, averaged over subensembles of the ideal grand canonical ensemble. These can be expressed as generalized Fermi factors which depend on the ratio of partition functions. A new algorithm for the computation of this ratio is presented, hybridizing recursion relations starting from full or empty super-shells with an exact relation numerically stable about the average occupation of the supershell.

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