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DOI | 10.1126/science.aat0049 |
Imaging CF3I conical intersection and photodissociation dynamics with ultrafast electron diffraction | |
Yang, Jie1,2; Zhu, Xiaolei2,3; Wolf, Thomas J. A.2; Li, Zheng2,4,5; Nunes, J. Pedro F.6; Coffee, Ryan2,7,8; Cryan, James P.2; Guehr, Markus2,9; Hegazy, Kareem2,8; Heinz, Tony F.2,10; Jobe, Keith1; Li, Renkai1; Shen, Xiaozhe1; Veccione, Theodore1; Weathersby, Stephen1; Wilkin, Kyle J.11; Yoneda, Charles1; Zheng, Qiang1; Martinez, Todd J.2,3; Centurion, Martin11; Wang, Xijie1 | |
2018-07-06 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 361期号:6397页码:64-67 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany; England |
英文摘要 | Conical intersections play a critical role in excited-state dynamics of polyatomic molecules because they govern the reaction pathways of many nonadiabatic processes. However, ultrafast probes have lacked sufficient spatial resolution to image wave-packet trajectories through these intersections directly. Here, we present the simultaneous experimental characterization of one-photon and two-photon excitation channels in isolated CF3I molecules using ultrafast gas-phase electron diffraction. In the two-photon channel, we have mapped out the real-space trajectories of a coherent nuclear wave packet, which bifurcates onto two potential energy surfaces when passing through a conical intersection. In the one-photon channel, we have resolved excitation of both the umbrella and the breathing vibrational modes in the CF3 fragment in multiple nuclear dimensions. These findings benchmark and validate ab initio nonadiabatic dynamics calculations. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437467100061 |
WOS关键词 | MOLECULAR-DYNAMICS ; SPECTROSCOPY ; PHOTOSYNTHESIS ; SPECTRA ; PULSES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/199078 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA; 2.SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA; 3.Stanford Univ, Dept Chem, Stanford, CA 94305 USA; 4.Deutsch Elektronen Synchrotron DESY, Ctr Free Electron Laser Sci, Hamburg, Germany; 5.Max Planck Inst Struct & Dynam Matter, Hamburg, Germany; 6.Univ York, Dept Chem, York, N Yorkshire, England; 7.SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA USA; 8.Stanford Univ, Dept Phys, Stanford, CA 94305 USA; 9.Univ Potsdam, Inst Phys & Astron, Potsdam, Germany; 10.Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA; 11.Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA |
推荐引用方式 GB/T 7714 | Yang, Jie,Zhu, Xiaolei,Wolf, Thomas J. A.,et al. Imaging CF3I conical intersection and photodissociation dynamics with ultrafast electron diffraction[J]. SCIENCE,2018,361(6397):64-67. |
APA | Yang, Jie.,Zhu, Xiaolei.,Wolf, Thomas J. A..,Li, Zheng.,Nunes, J. Pedro F..,...&Wang, Xijie.(2018).Imaging CF3I conical intersection and photodissociation dynamics with ultrafast electron diffraction.SCIENCE,361(6397),64-67. |
MLA | Yang, Jie,et al."Imaging CF3I conical intersection and photodissociation dynamics with ultrafast electron diffraction".SCIENCE 361.6397(2018):64-67. |
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