Time-dependent theoretical approach to the influence of laser fields on the resonance enhanced multi-photon ionization of SH radical

This paper reports that the (2+1) resonance enhanced multi-photonionization spectra of SH radical in external fields are simulatedusing the split-operator scheme of time-dependent wave-packetmethod. Two ionic states, i.e.~$a^1De$ and $b^1Si^ + $, areinvolved in the simulation. It gives the simulated photoelectronspectra, the population in each electronic state, as well as theprojection of the wave-packet in each electronic state on differentvibrational states. These results show that the so-called four-statemodel can represent the experimental results well.