ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
A photopredissociation spectrum of the A 1Πu–X 1Σ+g (8,2) transition in N2+2 is reported. The spectrum was recorded by detecting the photofragment signal as a function of excitation wavelength in a merged laser-ion beam apparatus. Line positions for the (8,2) band were measured and reduced to molecular constants. The natural linewidths, and hence predissociation rates, of all observed v'=8 levels were measured. The predissociation rates were found to be e/f symmetry dependent and, in particular, for the f levels, also J dependent. Somewhat surprisingly it appears as if tunneling does not contribute to the observed predissociation; rather, the v'=8 level of the A 1Πu state is depleted by coupling to the continua of the 1Σ−u, 3Σ+u, and 3Δu states.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.463162
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