Abstract

Isotopic analysis of stable nitrogen by the optic emission method has become quite widespread. As reported a few years ago, the ¹⁴N¹⁴N bandhead at 2977 Å and the ¹⁴N¹⁵N bandhead at 2983 Å constitute one of the best pairs for the spectral determination of the ¹⁵N abundance in nitrogen samples of low enrichment.

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