De-excitation dynamics of small molecules investigated by femtosecond multiphoton ionization; 用飞秒多光子电离研究小分子激发态动力学 | |
Wang L(王利) ; Liu HP(刘洪平) ; Yin SH(尹淑慧) ; Zhang JY(张建阳) ; Lou NQ(楼南泉) | |
2000-07-22 | |
会议名称 | international symposium on ultrafast phenomena & terahertz waves |
会议日期 | 2000-7-22 |
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 |
通讯作者 | 王利 |
中文摘要 | 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. |
会议主办者 | 中国科学院物理研究所 |
学科主题 | 物理化学 |
语种 | 中文 |
内容类型 | 会议论文 |
源URL | [http://159.226.238.44/handle/321008/111278] ![]() |
专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
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, 用飞秒多光子电离研究小分子激发态动力学[C]. 见:international symposium on ultrafast phenomena & terahertz waves. 中国. 2000-7-22. |
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