Stark shifts of N III and O IV lines.

Details Stark shifts of N III and O IV lines. Stark shifts of N III and O IV lines.

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pobeo..49...93b&link_type=abstract

Publications de l'Observatoire Astronomique de Beograd, No. 49, p. 93 - 96

Astronomy and Astrophysics

Astronomy

Stark Broadening: Spectral Lines

Scientific paper

The Stark shifts of several lines belonging to analogous multiplets, 3s2S-3p2P0 and 3p2P0-3d2D2, of doubly ionized nitrogen and triply ionized oxygen (boron isoelectronic sequence) have been calculated and measured in a plasma of a low pressure pulsed arc. Plasma electron densities are determined from the width of the He II Pα line. Electron temperatures are measured from relative intensities of N III lines while temperatures in oxygen mixture are determined from relative intensities of IV lines. Experimental N III Stark shifts are in reasonable agreement with the semiclassical calculations. In the case of O IV lines theory predicts shifts of the opposite sign. Possible causes of this discrepancy are discussed.

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