Title of article :
Photodissociation of CS2 at 193 nm investigated by polarised photofragment translational spectroscopy Original Research Article
Author/Authors :
Jeremy G. Frey، نويسنده , , Peter Felder، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 1996
Pages :
10
From page :
397
To page :
406
Abstract :
The predissociation dynamics of CS2 in the Ã(1B2) state have been investigated by means of high resolution photofragment translational spectroscopy at 193 nm. The photofragment translational energy distributions derived from the time-of-flight (TOF) distributions of the CS fragment are qualitatively similar to the ones obtained in previous investigations. Detailed measurements carried out with a linearly polarised photolysis laser reveal a pronounced anisotropy of the fragment recoil which is dependent on the translational energy and on the molecular beam carrier gas. It is possible to partition each TOF distribution of the CS fragment into two components corresponding to the formation of S(3P) and S(1D) partner fragments, respectively, in a manner consistent with recent branching ratio determinations. In the case of the Ne beam this partitioning leads to the anisotropy parameters β(S 1D) ≈ 0.2 and β(S 3P) ≈ 1.0. These results indicate that the overall photodissociation process occurs on a time scale of ∼ 1.5 ps and that the formation of CS + S(1D) proceeds through a strongly bent transition state.
Journal title :
Chemical Physics
Serial Year :
1996
Journal title :
Chemical Physics
Record number :
1057504
Link To Document :
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