Deactivation of Hg (63P1) by CO and N2

Atoms of Hg(63P0) produced by collisions between Hg(63P1) and either N2 or CO were detected by measuring the electrons ejected from a silver surface. From the pressure dependence of this effect, it was shown that the quenching of Hg(63P1) to Hg(63P0) by collision with CO occurs at about the same rat...

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Bibliographic Details
Published in:The Journal of chemical physics 1962-03, Vol.36 (5), p.1264-1267
Main Authors: Scheer, Milton D., Fine, Joseph
Format: Article
Language:English
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Summary:Atoms of Hg(63P0) produced by collisions between Hg(63P1) and either N2 or CO were detected by measuring the electrons ejected from a silver surface. From the pressure dependence of this effect, it was shown that the quenching of Hg(63P1) to Hg(63P0) by collision with CO occurs at about the same rate as with N2. Since CO is 20 times more efficient than N2 in the quenching of 2537 A fluorescence, the process [Hg(63P1)+CO→Hg(61S0)+CO*]must be much faster than the corresponding reaction with N2. A possible explanation of this effect is the intermediate formation of HgCO*, which dissociates to Hg(61S0) and vibrationally excited CO(v=20). This could account for the fact that H2CO and (HCO)2 are formed in the Hg photosensitized reaction of H2 and CO and not in the electric discharge experiments of H atoms reacting with ground state CO.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.1732725