Neutral dissociation of methane in the ultra-fast laser pulse  

作　　者：SONG Di LIU Kai KONG FanAo XIAAnDong 

机构地区：[1]Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Chinese Science Bulletin》2008年第13期1946-1950,共5页

基　　金：the National Basic Research Program of China (Grant No. 2006CB806000)

摘　　要：Neutral fragments of methane were performed using femetosecond laser at an intensity of 1013-14W/cm2. A new mechanism of neutral dissociation is proposed in this work. The methane molecule is excited to super-excited states,in which it would dissociate into neutral fragments. We made Morse type potential energy surfaces for the super-excited molecules. Furthermore,we investigated the dissociation dy-namics of the super-excited states by using quasi-classical trajectory (QCT) method. The results thus interpret the neutral dissociation of the methane molecule in the ultra-fast laser pulse.Neutral fragments of methane were performed using femetosecond laser at an intensity of 10^（13-14） W/cm^2. A new mechanism of neutral dissociation is proposed in this work. The methane molecule is excited to super-excited states, in which it would dissociate into neutral fragments. We made Morse type potential energy surfaces for the super-excited molecules. Furthermore, we investigated the dissociation dynamics of the super-excited states by using quasi-claseical trajectory （QCT） method. The results thus interpret the neutral dissociation of the methane molecule in the ultra-fast laser pulse.

关 键 词：激光脉冲 激光场 中性解离 摩尔斯式电码 

分 类 号：TN24[电子电信—物理电子学]