| 摘要 |
A method for increasing the spectral stability of cold cathode discharge infra-red light sources is described, especially for sources operating with a carbon dioxide fill. A catalyst is added inside the lamp envelope to induce recombination of the dissociation products of molecules of the fill gas broken down by the action of the electrical discharge, thus reducing the changes with time in the concentration of excited gas molecules in the lamp active in emitting to ground state levels. Maintenance of the level of self absorption of the lamp emission results in a concomitant maintenance of the spectral shape of the lamp emission.
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