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题名: Predissociation dynamics of N2O+ at the A (2)Sigma(+) state: Three pathways to form NO+((1)Sigma(+)) revealed from ion velocity imaging
作者: Wang, Hua1;  Zhou, Xiaoguo1;  Liu, Shilin1;  Jiang, Bo2;  Dai, Dongxu2;  Yang, Xueming2
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 2010-06-28
DOI: 10.1063/1.3457945
卷: 132, 期:24
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: The predissociation dynamics of nitrous oxide ion (N2O+) at its first excited state A (2)Sigma(+) has been investigated with ion velocity imaging by probing the NO+ fragments. The parent ion N2O+, prepared at the ground state X-2 Pi(000) through (3+1) resonance-enhanced multiphoton ionization (REMPI) of jet-cooled N2O molecules at 360.55 nm, was excited to different vibrational levels of the A (2)Sigma(+) state in a wavelength range of 280320 nm, and then predissociated to form NO+ and N fragments. The internal energy distribution of the NO+ fragment was determined from its ion velocity images. With the help of potential energy surfaces (PESs) of N2O+, three dissociation pathways have been proposed to interpret the three kinds of NO+ fragments with different internal state distributions: (1) the A (2)Sigma(+) state couples to a dissociative 1(4)Sigma(-) state via a bound 1 (4)Sigma(-) state to form the NO++N(4S) channel, where NO+ fragment is rotationally hot; (2) the A (2)Sigma(+) state couples to dissociative states (2)Sigma-/(2)Delta via the 1 (4)Pi state to form the NO++N(2D) channel, where NO+ fragment is also rotationally hot; (3) the A (2)Sigma(+) state couples to the high energy region of the ground state X (2)Pi and then dissociates to form the NO++N(2D) channel, where NO+ is rotationally cold. (C) 2010 American Institute of Physics. [doi:10.1063/1.3457945]
关键词[WOS]: BEAM LASER SPECTROSCOPY ;  PHOTOELECTRON-PHOTOION COINCIDENCE ;  HIGH-RESOLUTION SPECTROSCOPY ;  ROTATIONALLY EXCITED NO+ ;  MOLECULE REACTION ;  NITROUS-OXIDE ;  IONIZATION-PHOTOELECTRON ;  SPECTRUM ;  DISSOCIATION ;  LIFETIMES
语种: 英语
WOS记录号: WOS:000279740200026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141957
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Univ Sci & Technol China, Dept Chem Phys, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Wang, Hua,Zhou, Xiaoguo,Liu, Shilin,et al. Predissociation dynamics of N2O+ at the A (2)Sigma(+) state: Three pathways to form NO+((1)Sigma(+)) revealed from ion velocity imaging[J]. JOURNAL OF CHEMICAL PHYSICS,2010,132(24).
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