Abstract
The influence of the dynamic Stark effect on the dissociation of CsI is theoretically studied by the time- dependent wave-packet method. After a pump pulse induces a dissociating wave packet that propagates through both the ionic channel X0 + (Cs + ( 1 S0)+I + ( 1 S0)) and the covalent channel A0 + (Cs( 2 S1/2)+I( 2 P3/2)), a Stark pulse is applied to control the diabatic-dissociation dynamics. The first-order non-resonant non-perturbative dynamic Stark effect gives control over the break up, the dissociation probabilities in the two channels being controlled by the delay between the pump and Stark pulses. With a 720-fs delay, the dissociation probability through channel A is greatly enhanced.
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