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IR-induced UV-visible fluorescence in matrix-isolated CO

✍ Scribed by J.P. Galaup; J.Y. Harbec; R. Charneau; H. Dubost

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 536 KB
Volume: 120
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(85)87038-x

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✦ Synopsis

UV-visible fluorescence from solid argon containing 1% or "C"O is observed upon irradiation hy n color-ccn~~ laser whose frequency is coincident with the lirst overtone absorption hand or CO. This emission consisls or an imsnse complex syswm bcwcen 650 and 800 nm and a weaker single progression rxlrnding from 310 lo 640 nm. Both syslems are assigned IO eleclronic transilions of moleculnr oxygen. Inrrared emission speara indicale thal high-lying vibraional kvels~o~ CO (up IO u = 30) are populaled by anharmonic V-V pumping. Subsequent smission rrom C%, and b'': SKIKS or O2 suggests-that vibnlional-l~rlscrronic energy ~ranskr occurs. Vibrnrionally unrslnned rmission rrom Ihs singIrl s~alc ol oxygen indicaks rhal the vibralional relaxation or Oz(b''l ) in Ar is slow.

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