Measurement of atomic parameters of singly ionized argon lines. III. Stark broadening parameters.

Details Measurement of atomic parameters of singly ionized argon lines. III. Stark broadening parameters. Measurement of atomic parameters of singly ionized argon lines. III. Stark broadening parameters.

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jqsrt..57..377p&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 57, issue 3, pp. 377-393

Computer Science

10

Argon: Atomic Data, Argon: Stark Broadening

Scientific paper

In order to observe Ar II transitions between levels of high excitation energy, and to have the highest possible temperature and free electron density in the applied light source, the authors have observed side-on the near-cathode zone of an electric arc of Iarc = 200 A current, burning in pure argon at atmospheric pressure. Spectroscopic diagnostics of the observed zone showed that it was characterized by a high temperature and an electron density of the order T ≍ 24,000 K and Nc ≍ 2×1023m-3, respectively. Altogether, the authors have registered more than 90 spectral lines from different levels and configurations, for which the upper levels belong to the 4f configuration (excitation energy Ei > 24 eV), as well as 5s and 3d″(Ei > 22 eV). The data, the transition probabilities and Stark widths of some 90 and 80 Ar II lines, respectively, in many cases measured for the first time, are consistent with the best data published up to now and give one of the most complete sets of results. In this third part, the authors present the results of their measurements of the Stark widths for 80 Ar II lines.

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