308nm激光作用下苯的多光子电离质谱  

Multiphoton Ionization Mass Spectra of Benzene Induced by 308nm Laser

作　　者：马树森[1] 王广昌[1] 秦玉英[1] 王绍卿[1] 姚永邦[1] 张兆平[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,230031

出　　处：《量子电子学》1989年第4期312-316,共5页

摘　　要：报导了在308nm准分子激光作用下苯的多光子电离质谱。给出了质谱分布的情况随功率密度的变化关系。C_5族离子强度相当强,碎片离子丰富。积分离子流并非随功率密度的增加单调上升,在～100MW/cm^2处达到最大值。讨论了可能的电离过程和碎化过程。The multiphoton ionization (MPI) mass spectra of benzene induced by 308nm laser have been reported, and the dependences of mass spectra intensity on laser power obtained in the paper. The ion fragments in C_5 group are very rich. The integrated ion intensity has maximum value at the power density of about 100MW/cm^2. The possible ionization and fragmentation processes are also discussed.

关 键 词：激光 苯 质谱 多光子电离 

分 类 号：O625.11[理学—有机化学]