ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The photodissociation vector correlations, also referred to as the bipolar moments, are studied following the photodissociation of BrCN in the spectral region from 206 to 260 nm. From the analysis, it is shown that there are at least two potential energy surfaces involved in the photodissociation of BrCN; one that produces CN+B(2P3/2), and another that yields CN+(2P1/2). There is also clear evidence that the fragment translational recoil velocity v is predominantly parallel to the parent transition dipole moment μ, while the fragment rotational angular momentum J is primarily perpendicular to μ. The values of the bipolar moments are lower than the limiting values for μ(parallel)v⊥J and appear to be reduced by the dynamics of the photodissociation process. The primary factor causing the loss of correlation between μ and J appears to be the bent exit channel which leads to a mixed parallel and perpendicular transition. The loss of correlation between μ and v is evidence confirming the existence of out of plane forces being present in the photolysis. These out of plane forces were previously invoked to account for unequal populations in the F1 and F2 spin–rotation components of the CN product.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.460847
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