Ultrafast Dynamics Through Conical Intersections in 2,6-dimethylpyridine Studied with Time-resolved Photoelectron Imaging
文献类型：期刊论文
| 作者 | Qiu, Xue-jun1,2; Zhu, Rong-shu3; Xu, Yan-qi1,2; Bumaliya, Abulimiti1,2; Zhang, Song1,2; Zhang, Bing1,2 |
| 刊名 | CHINESE JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 24期号:5页码:551-556 |
| 关键词 | 2 Photoelectron imaging Conical intersection Internal conversion Time-resolved spectroscopy 6-dimethylpyridine |
| 产权排序 | 第一 |
| 英文摘要 | The ultrafast dynamics through conical intersections in 2,6-dimethylpyridine has been studied by femtosecond time-resolved photoelectron imaging coupled with time-resolved mass spectroscopy. Upon absorption of 266 inn pump laser, 2,6-dimethylpyridine is excited to the S(2) state with a pi pi* character from S(0) state. The time evolution of the parent ion signals consists of two exponential decays. One is a fast component on a timescale of 635 fs and the other is a slow component with a timescale of 4.37 ps. Time-dependent photoelectron angular distributions and energy-resolved photoelectron spectroscopy are extracted from time-resolved photoelectron imaging and provide the evolutive information of S(2) state. In brief, the ultrafast component is a population transfer from S(2) to S(1) through the S(2)/S(1) conical intersections, the slow component is attributed to simultaneous IC from the S(2) state and the higher vibrational levels of S(1) state to S(0) state, which involves the coupling of S(2)/S(0) and S(1)/S(0) conical intersections. Additionally, the observed ultrafast S(9)-> S(1) transition occurs only with an 18% branching ratio. |
| 学科主题 | 原子分子物理学 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | INTERNAL-CONVERSION ; ELECTRONIC RELAXATION ; FEMTOSECOND DYNAMICS ; ENERGY DEPENDENCE ; MOLECULES ; PYRIDINE ; PHASE ; STATE ; ISOMERIZATION ; SPECTROSCOPY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000297139200008 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1926]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Harbin Inst Technol, Shenzhen Grad Sch, Environm Sci & Engn Res Ctr, Shenzhen 518055, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Xue-jun,Zhu, Rong-shu,Xu, Yan-qi,et al. Ultrafast Dynamics Through Conical Intersections in 2,6-dimethylpyridine Studied with Time-resolved Photoelectron Imaging[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2011,24(5):551-556. |
| APA | Qiu, Xue-jun,Zhu, Rong-shu,Xu, Yan-qi,Bumaliya, Abulimiti,Zhang, Song,&Zhang, Bing.(2011).Ultrafast Dynamics Through Conical Intersections in 2,6-dimethylpyridine Studied with Time-resolved Photoelectron Imaging.CHINESE JOURNAL OF CHEMICAL PHYSICS,24(5),551-556. |
| MLA | Qiu, Xue-jun,et al."Ultrafast Dynamics Through Conical Intersections in 2,6-dimethylpyridine Studied with Time-resolved Photoelectron Imaging".CHINESE JOURNAL OF CHEMICAL PHYSICS 24.5(2011):551-556. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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