Experimental study of Stark broadening N II lines from states of highorbital angular momentum.

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Stark Broadening:Nitrogen Lines

Scientific paper

The authors report experimental electron impact widths for six spectral lines belonging to 3d-4f transitions of singly ionized nitrogen. Line profiles were measured in a low pressure pulsed arc. An electron density in the range 5.9 - 7.5×1022m-3 was determined from the Stark width of the He II 4686 Å line, while electron temperatures of 28,300 - 32,300K were measured using relative intensities of O II impurity lines. Comparison with semiempirical theoretical results does not resolve which coupling scheme, LS or LK, is better to describe atomic states in Stark broadening calculations of certain N II lines.

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