Mode specific photodissociation of CS2+via the A2Πu state: a time-sliced velocity map imaging study
Literature Information
Jialin Li, Qun Zhang, Yang Chen, Cunshun Huang, Xueming Yang
The vibrationally mediated photodissociation of CS2+ cations via the A2Πu(ν1,ν2,0) state has been studied by means of the velocity map ion imaging technique. The measurements were made with a double resonance strategy. The CS2+ cations were prepared by a (3 + 1) resonance enhanced multiphoton ionization method. The photo-fragment excitation spectrum of S+ was recorded by scanning the photolysis laser via the A2Πu(ν1,ν2,0) state. By fixing the photolysis laser wavelength at the specific vibrational state, the (1 + 1) photodissociation images of S+ photofragments from numerous vibrationally mediated states have been accumulated. The translational energy release spectra derived from the resulting images imply that the co-fragments, CS radicals, are both vibrationally and rotationally excited. The one-photon photodissociation without the vibrational state selection has also been performed. Comparing the vibrationally mediated photodissociation with one-photon photodissociation observations, clear evidence of vibrational state control of the photodissociation process is observed.
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