中文摘要：

运用多参考微扰理论（Muhireference MФller-Plesset theory）计算了SSCH3垂直激发能及其S—C与S—S两种断键方式的绝热（Adiabatic）与非绝热（Diabatic）的基态和激发态势能曲线，研究了在193nm激光作用下SSCH3的光解离过程，理论计算值与实验值相符．

英文摘要：

The vertical excitation energies of SSCH3 were calculated by using multireferenee MФller-Plesset theory. The adiabatic and diabatic potential-energy curves of the two types of bond cleavage, S-C and S-S, were calculated with muhireference MФller-Plesset theory, the photodissociation dynamics of SSCH3 under 193 nm laser was investigated and the results are in good agreement with those of the previous experiments.