Abstract
The absorption spectrum of matrix-isolated sodium has been remeasured in the region between 4000 and 6600 Å. Improved evaporation techniques facilitated the preparation of nearly pure Na/X and, for the first time, Na 2/X matrices, where X is an inert gas. The structure observed in Na/Xe agrees with that found by other authors; two triplets at 5300 ⩽ λ ⩽ 6200 Å and a broad structure at 4960 Å. However, the influence of preparation parameters was found to be at variance with effects reported by others. For example, we find that the form of the spectra does not depend on the Na/Xe ratio but on the time rates of inert gas and sodium deposition. By such means, it is shown that the 4960 Å feature is in all probability not inherently Na 2 in nature.
Published Version
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