物理化学学报2017，Vol.33Issue(3)：500-505,6.DOI:10.3866/PKU.WHXB201611111
飞秒脉冲作用下氯丙烯的多光子解离和电离动力学
Multiphoton Dissociation and Ionization Dynamics of Allyl Chloride Using Femtosecond Laser Pulses
摘要
Abstract
The dissociation and photoionization dynamics of C3H5Cl were studied at 200,400,and 800 nm with femtosecond laser pulses.The time-of-flight mass spectra,laser power index and photoelectron images were recorded.At short wavelength (200 nm),ionization of the parent molecule was found to be the dominant channel,while other ions were generated by the dissociation of C3H5Cl+.With the shift to long wavelength (e.g.,800 nm),fragment ions became dominant,and were generated through the multiphoton ionization of neutral fragments after the photodissociation of C3H5Cl.These results imply that photodissociation plays a significant role at long wavelength,because neutral fragments are supposed to be generated from the intermediate states reached by 800 nm photons.At 400 nm,the dissociation on the intermediate states is also critical,but is not as high as that at 800 nm.Taken together,our results demonstrate that the dissociation/ ionization behaviors of allyl chloride are wavelength-dependent,and reveal the complex dynamics of allyl chloride at 200,400 and 800 nm.关键词
飞秒激光脉冲/飞行时间质谱/光电子影像/氯丙烯/多光子解离和电离Key words
Femtosecond laser pulse/Time-of-flight mass spectrometry/Photoelectron imaging/Allyl chloride/Multiphoton dissociation and ionization分类
化学化工引用本文复制引用
刘宁亮,沈环..飞秒脉冲作用下氯丙烯的多光子解离和电离动力学[J].物理化学学报,2017,33(3):500-505,6.基金项目
The project was supported by the National Natural Science Foundation of China (21403080,61308028) and Specialized Research Fund for the Doctoral Program of Higher Education,China (20130146120015).国家自然科学基金(21403080,61308028)及高等学校博士学科点专项科研基金(20130146120015)资助项目 （21403080,61308028）
