Abstract
IN a previous paper a high-resolution study of the fifth positive system of nitrogen was presented1. It was there mentioned that no bands with ν′ greater than 2 have been observed, although some of them, according to the Franck–Condon principle, should be strong enough to be seen. This fact was suggested as being due to a possible predissociation, but since the exact location of the states involved in this transition, x 1σ− g − a′1σ− u, was not known, nothing more definite could be said about the nature of such a predissociation. Recently, however, Wilkinson and Mulliken2 obtained accurate term values for these states, and I found it therefore of interest to reinvestigate my plates in order to study the possible predissociation in more detail.
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