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学科主题物理化学
De-excitation dynamics of small molecules investigated by femtosecond multiphoton ionization
Wang L(王利); Liu HP(刘洪平); Yin SH(尹淑慧); Zhang JY(张建阳); Lou NQ(楼南泉)
会议名称International Symposium on Ultrafast Phenomena & Terahertz Waves
会议日期2000-7-22
2000-07-22
会议地点中国
其他题名用飞秒多光子电离研究小分子激发态动力学
页码48/4
部门归属十一室
主办者中国科学院物理研究所
英文摘要De-excitation dynamics of small molecules investigated by femtosecond multiphoton ionization By using home-made solid-state kilohertz femtosecond laser system and time-of-flight mass spectrometer (TOF-MS), the de-excitation dynamics of small molecules, such as OCS, CS2 and NH3, are investigated in real time. The cross correlation width is identified as 141fs by Xe pump-probe experiment. The lifetime of OCS in its Rydberg state [1] is experimentally determined to be fs for the first time. This picosecond decay process indicates that the excited state is predissociative. Rydberg states of CS2 [2] de-excites in 948 ± 23 fs. For NH3, for the first real-time, the lifetime constant in ¢1A1¢ state is determined as 936 ± 92 fs. The internal conversion predissociation mechanism of the ¢1A1¢ state, suggested by Dixon et al. [3] can be used to interpret this de-excitation process.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/111278
专题中国科学院大连化学物理研究所
通讯作者Wang L(王利)
推荐引用方式
GB/T 7714
Wang L,Liu HP,Yin SH,et al. De-excitation dynamics of small molecules investigated by femtosecond multiphoton ionization[C],2000:48/4.
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