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ICN photodissociation at 193 nm; CN(B2Σ) rotational distributions and fluorescence polarization

✍ Scribed by Mark Lambert; Brian Callen; H. Dugan; S.V. Filseth; F.J. Morgan; C.M. Sadowski

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 413 KB
Volume: 139
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)80148-3

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✦ Synopsis

The rotational distribution of CN( B "C, v=O) dissociated from ICN at I93 nm is well represented by a thermal rotational distribution for T= 250 K, giving an average energy of I75 cm-'. The energy of the highest rotational state detected (N= 28) suggests that some or all of the molecules dissociated have appreciable internal energy. We discuss recent values of the available energy. Polarization of the R( 8) line of the CN(B) fluorescence agrees with other experiments in this absorption feature, and gives the same upper-state symmetry observed at shorter wavelengths. CN( A ZII ) was also detected promptly after the fragmentation.

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