%0 Journal Article
%T Ultrafast dynamics and dissociative ionization of CS2 molecules studied via the femtosecond pump-probe method
%A DongDong Zhang
%A Zhen Fan
%A ErPing Sun
%A JunFeng Zhang
%A Hang Liu
%A HaiFeng Xu
%A MingXing Jin
%A DaJun Ding
%J Chinese Science Bulletin
%@ 1861-9541
%D 2011
%I 
%R 10.1007/s11434-010-4325-7
%X The ultrafast dynamics and dissociative ionization of CS2 were studied using the pump-probe method with time-of-flight mass spectroscopy. The transient behavior of both parent ion (CS2 +) and fragment ions (S+ and CS+) was observed. It was found that all the ionic signals decay exponentially with lifetimes that were different for delay times, t>0 and t<0, which can be attributed to the evolution of different Rydberg states pumped by 267-nm and 400-nm laser pulses. The lifetimes of two Rydberg states were obtained simultaneously from one fitting of the transients. The fragment ions were produced by the dissociation of CS2 +, and it is suggested that the final ionic state is the C2Ķēg + state of CS2 + based on the measured S+/CS+ branching ratio. The S+/CS+ ratio is dependent on the delay time of the two lasers, indicating that the dissociation process of CS2 + is related to the evolution of the intermediate Rydberg state.
%K ultrafast dynamics
%K femtosecond
%K pump-probe
%K carbon disulfide
%U http://link.springer.com/article/10.1007/s11434-010-4325-7