Abstract
RECENTLY1, I reported the preliminary study of a nitrogen afterglow at high pressures, rich in the Vegard-Kaplan bands and containing a line at 3471 A. which was tentatively identified as the hitherto unobserved transition 2Pā4S in atomic nitrogen. That report was based on observations of the afterglow from two tubes, in one of which the nitrogen was purer and at a lower pressure than in the other. Further observations on these tubes has enabled us to study the variations in intensity of the Vegard-Kaplan bands and the new line, both with respect to pressure and to purity.
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References
Kaplan, NATURE, 141, 645 (1938).
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KAPLAN, J. A New Nitrogen Line. Nature 141, 1139ā1140 (1938). https://doi.org/10.1038/1411139a0
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DOI: https://doi.org/10.1038/1411139a0
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