亚硝酸甲酯分子在440nm附近的激光光解

作     者：李海洋 莫华平 白吉玲 戴东旭 

作者机构：中国科学院大连化学物理研究所 

出 版 物：《物理化学学报》 (Acta Physico-Chimica Sinica)

年 卷 期：1995年第11卷第1期

页      面：87-91页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 070303[理学-有机化学] 0703[理学-化学] 

主　　题：亚硝酸甲酯 多光子电离 光解 TOFMS 

摘      要：The collision-free multiphoton ionization and dissociation of jet cooling methyl nitrite (CH3ONO) were studied by using intense dye laser around 440nm. NO+ ion peak in the TOF mass spectrum was obtained under different accelerating electric field and different angle (χ) between laser polarization plane and the tals of the flight ***+ peak is broadened when NO comes from the dissociation of CH3ONO and this broadening becomes more apparent under lower accelerating electric field. NO+ peak shape is also influenced by the property of laser polarization. ir the accelerating electric field is low enough, there are three peaks when χ=0 and only one peak when χ=90°. These phennomena can be explained by CH3ONO’s two-photon transition from S0 to S2 repulsive state. NO thus produced has a large velocity parallel to the laser polarization plane.