Chemisorptive Luminescence

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Abstract
The chemisorption of each of the gases oxygen, nitric oxide, and carbon monoxide on a clean, polycrystalline tungsten ribbon is accompanied by a faint luminescence in the visible. This effect is not observed during the chemisorptions of carbon dioxide, hydrogen bromide, hydrogen, or nitrogen. The effect, when it does occur, is a small one, corresponding to photon emission for one out of every 109 CO or NO adsorptions and one out of every 107 O2 adsorptions. The decay of this self‐excited luminescence does not follow first‐order kinetics; it persists for many seconds with hyperbolic time dependence. No luminescent behavior is observed during electrochemical adsorption and desorption of oxygen.

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