Abstract
In this paper, we report experimental electron impact widths for six spectral lines belonging to 3 d-4 f 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 × 10 22m -3 was determined from the Stark width of the He II 4686 Å line, while electron temperatures of 28,300–32,300 K 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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