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The photodissociation of hydrogen chloride ions (HCl+) has been investigated through the A2Σ+ (ν′ = 6, 7 and 8) ← X 2Π3/2 (ν″ = 0) transition. The spectra reveal that state selective photodissociation with complete resolution of the spin, orbital, and rotational angular momentum is possible in the A 2Σ+ (ν′ = 6) state. The analysis of these spectra yields the rotational and the spin-rotation coupling constant of the A 2Σ+ (ν′ = 6) state. The lifetime of HCl+ decreases significantly with increasing vibrational excitation in the 2Σ+ state. Within the experimental error limits no J dependence of the lifetime is observerd. The state selective photodissociation of the HCl+ ions is also shown to be a very sensitive probe for unexpected parity transitions in the 2 + 1 REMPI formation of the HCl+ ions in the X 2Π3/2 (ν″ = 0) state. 相似文献
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