On the interpretation of intensity anomalies in dense aluminium plasmasReport as inadecuate

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Abstract : A numerical model is used to predict the behaviour of discrete emission and absorption spectra in non-homogeneous plasmas when the populations are in equilibrium. The evidence of a disagreement between this prediction and experiment is given for three peculiar lines of the Al3+ ion in a laser produced plasma. Dielectronic recombination is invoked as a likely channel leading to an extra population for one of the excited levels of the Al3+ ion. This conjecture is supported by the experimental observations.

Keywords : aluminium plasma diagnostics plasma production and heating by lasers plasma theory intensity anomalies numerical model laser produced dense Al sup 3+ plasma X ray spectra UV spectra discrete emission spectra absorption spectra nonhomogeneous plasma dielectronic recombination excited level population

Author: G. Jamelot A. Carillon P. Jaeglé A. Sureau

Source: https://hal.archives-ouvertes.fr/


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