Catalysis in sealed CO2 lasers

A. L S Smith*, P. G. Browne

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


The degree of dissociation of CO2 in a sealed CO 2-N2-He laser is limited by catalysis of reactions re-forming CO2, either by a platinum cathode or with outgassed hydrogen. The degree of dissociation measured in a laser is in quantitative agreement with that calculated for the reactions occurring in the discharge plasma if 5% of the hydrogen is in the atomic form. The hydrogen partial pressure is controllable by a palladium diffusion tube.

Original languageEnglish
Article number311
Pages (from-to)1652-1659
Number of pages8
JournalJournal of Physics D: Applied Physics
Issue number12
Publication statusPublished - 1974
Externally publishedYes


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