Investigation of ultra short laser pulses with carbon bisulfide

Experimental investigation have been carried out for dissociation/ionisation of methyl bromide using time of flight mass spectrometer,and the mass signals were assigned to S+、CS+、C+、S2+and CS2+.Then,the resonant features of CS2+have been assigned.At last,the processes of multi-photon ionization in 69200-70650 cm-1 were given.