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题名: HF(v '=3) forward scattering in the F+H-2 reaction: Shape resonance and slow-down mechanism
作者: Wang, Xingan1;  Dong, Wenrui1;  Qiu, Minghui2;  Ren, Zefeng1;  Che, Li1;  Dai, Dongxu1;  Wang, Xiuyan1;  Yang, Xueming1;  Sun, Zhigang1, 3;  Fu, Bina1;  Lee, Soo-Y.3;  Xu, Xin4;  Zhang, Dong H.1
关键词: chemical reaction dynamics ;  crossed molecular beam experiment ;  potential energy surface
刊名: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
发表日期: 2008-04-29
DOI: 10.1073/pnas.0710840105
卷: 105, 期:17, 页:6227-6231
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Crossed molecular beam experiments and accurate quantum dynamics calculations have been carried out to address the long standing and intriguing issue of the forward scattering observed in the F + H2 -> HF(v' = 3) + H reaction. Our study reveals that forward scattering in the reaction channel is not caused by Fesh-bach or dynamical resonances as in the F + H-2 -> HF(v = 2) + H reaction. It is caused predominantly by the slow-down mechanism over the centrifugal barrier in the exit channel, with some small contribution from the shape resonance mechanism in a very small collision energy regime slightly above the HF(v' = 3) threshold. Our analysis also shows that forward scattering caused by dynamical resonances can very likely be accompanied by forward scattering in a different product vibrational state caused by a slow-down mechanism.
关键词[WOS]: POTENTIAL-ENERGY SURFACE ;  DIFFERENTIAL CROSS-SECTIONS ;  HYDROGEN-EXCHANGE REACTION ;  CHEMICAL-REACTION ;  REACTION DYNAMICS ;  TRANSITION-STATE ;  MOLECULAR-BEAM ;  F&H2 REACTION ;  QUANTUM
语种: 英语
WOS记录号: WOS:000255534100005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141179
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Dalian Jiaotong Univ, Dept Phys, Dalian 116028, Peoples R China
3.Nanyang Technol Univ, Sch Phys & Math Sci, Singapore 637616, Singapore
4.Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China

Recommended Citation:
Wang, Xingan,Dong, Wenrui,Qiu, Minghui,et al. HF(v '=3) forward scattering in the F+H-2 reaction: Shape resonance and slow-down mechanism[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2008,105(17):6227-6231.
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