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Excitation of XeF* by reactions of XeF2 with Ar(3P0,2),Kr(3P2) and Xe(3P2)

โœ Scribed by J.E. Velazco; J.H. Kolts; D.W. Setser; J.A. Coxon

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
716 KB
Volume
46
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The reactions of the lowest metast&bIe states of Ar, Rr and Xe with XeF2 were studied in a Bowing after$ow appamtus; XeF emission (from D *111,2 and B 'C* states) was observed in all cases. me toti rate constants (cm3 molecde-r S-I) for XeF* formation were determined as 75 X l@' -Xe(3P2); 64 X lo-" -KI(~P~) and 20 X IOWLL -Ar(3Po of_ The reactions of A@Pe,$ and Krt3P2) with XeF2 also gave ArF * and KrF*, respectively_ Anafysis of these emission; indicates that at least two different mechanisms are operative: reactive quenching by the ionic-covalent curve-crossiu~ mechatdsm and excitation transfer. The AI(~P~;~) + XeF2 reaction is a sufficiently strong source of XeF(D-X) emission that ffie main features of the XeF(D *l~,,~ -X 2 2?) system couId be photographed and tentative assignments of these vibrational bands are given. The XeF(D + B) emission could not be observed and the ratio of the D-X versus the D-B transition probability must be > 1000 : 1.

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