Unequal Population of the C N X2Z+ Fine-structure Components
نویسندگان
چکیده
Photolysis of ICN at 281.5, 266 and 249 nm produces CN X '2+ fragments in which the population of the F,(J"= N''+;) and F2(J"= "'-4) finestructure components vary markedly as a function of d', N" and dissociation wavelength. Population differences favour either F1 or F2, and can be > 2: 1. A model is proposed to explain this behaviour, in which out-of-plane, spin-dependent forces cause the electron spin on CN to have a preferred orientation with respect to rotation of the CN fragment. The strong N" dependence of the F , / F 2 ratio is attributed to interference between different dissociation channels, probably enhanced by various curve crossings.
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تاریخ انتشار 2003