Real-time visualization of the vibrational wavepacket dynamics in electronically excited pyrimidine via femtosecond time-resolved photoelectron imaging
文献类型：期刊论文
| 作者 | Zhang, Bing2; Zhang, Song; Song, Xinli; Wang, Yanmei; Ling, Fengzi; Long, Jinyou; Li, Shuai |
| 刊名 | JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2017-07-28 |
| 卷号 | 147期号:4 |
| DOI | 10.1063/1.4996207 |
| 文献子类 | Article |
| 英文摘要 | The vibrational wavepacket dynamics at the very early stages of the S-1-T-1 intersystem crossing in photoexcited pyrimidine is visualized in real time by femtosecond time-resolved photoelectron imaging and time-resolved mass spectroscopy. A coherent superposition of the vibrational states is prepared by the femtosecond pump pulse at 315.3 nm, resulting in a vibrational wavepacket. The composition of the prepared wavepacket is directly identified by a sustained quantum beat superimposed on the parent-ion transient, possessing a frequency in accord with the energy separation between the 6a(1) and 6b(2) states. The dephasing time of the vibrational wavepacket is determined to be 82 ps. More importantly, the variable Franck-Condon factors between the wavepacket components and the dispersed cation vibrational levels are experimentally illustrated to identify the dark state and follow the energy-flow dynamics on the femtosecond time scale. The time-dependent intensities of the photo-electron peaks originated from the 6a(1) vibrational state exhibit a clear quantum beating pattern with similar periodicity but a phase shift of pi rad with respect to those from the 6b(2) state, offering an unambiguous picture of the restricted intramolecular vibrational energy redistribution dynamics in the 6a(1)/6b(2) Fermi resonance. Published by AIP Publishing. |
| WOS关键词 | THRESHOLD IONIZATION SPECTROSCOPY ; RYDBERG STATE ENERGETICS ; ENERGY REDISTRIBUTION ; P-DIFLUOROBENZENE ; 3P RYDBERG ; PYRAZINE ; ABSORPTION ; MOLECULES ; COHERENCE ; PYRIDINE |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000414205100028 |
| 资助机构 | National Basic Research Program of China (973 Program)(2013CB922200) ; National Basic Research Program of China (973 Program)(2013CB922200) ; National Natural Science Foundation of China(91121006 ; National Natural Science Foundation of China(91121006 ; 21327804 ; 21327804 ; 21573279 ; 21573279 ; 21503270 ; 21503270 ; 11674355 ; 11674355 ; 11574351) ; 11574351) ; National Basic Research Program of China (973 Program)(2013CB922200) ; National Basic Research Program of China (973 Program)(2013CB922200) ; National Natural Science Foundation of China(91121006 ; National Natural Science Foundation of China(91121006 ; 21327804 ; 21327804 ; 21573279 ; 21573279 ; 21503270 ; 21503270 ; 11674355 ; 11674355 ; 11574351) ; 11574351) |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/11537]  |
| 专题 | 武汉物理与数学研究所_原子分子光物理研究部 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Bing,Zhang, Song,Song, Xinli,et al. Real-time visualization of the vibrational wavepacket dynamics in electronically excited pyrimidine via femtosecond time-resolved photoelectron imaging[J]. JOURNAL OF CHEMICAL PHYSICS,2017,147(4). |
| APA | Zhang, Bing.,Zhang, Song.,Song, Xinli.,Wang, Yanmei.,Ling, Fengzi.,...&Li, Shuai.(2017).Real-time visualization of the vibrational wavepacket dynamics in electronically excited pyrimidine via femtosecond time-resolved photoelectron imaging.JOURNAL OF CHEMICAL PHYSICS,147(4). |
| MLA | Zhang, Bing,et al."Real-time visualization of the vibrational wavepacket dynamics in electronically excited pyrimidine via femtosecond time-resolved photoelectron imaging".JOURNAL OF CHEMICAL PHYSICS 147.4(2017). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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