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Dynamical Resonances Accessible Only by Reagent Vibrational Excitation in the F plus HD -> HF plus D Reaction
Wang, Tao1; Chen, Jun1; Yang, Tiangang1; Xiao, Chunlei1; Sun, Zhigang1; Huang, Long1; Dai, Dongxu1; Yang, Xueming1,2; Zhang, Dong H.1,2
Source PublicationSCIENCE
2013-12-20
DOI10.1126/science.1246546
Volume342Issue:6165Pages:1499-1502
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology
WOS SubjectMultidisciplinary Sciences
WOS Research AreaScience & Technology - Other Topics
WOS KeywordDIFFERENTIAL CROSS-SECTIONS ; CHEMICAL-REACTIONS ; TRANSITION-STATE ; CHLORINE ATOM ; MOLECULAR-BEAM ; CHEMISTRY ; CHD3 ; PRODUCT ; A+BC ; CH4
AbstractExperimental limitations in vibrational excitation efficiency have previously hindered investigation of how vibrational energy might mediate the role of dynamical resonances in bimolecular reactions. Here, we report on a high-resolution crossed-molecular-beam experiment on the vibrationally excited HD(v = 1) + F -> HF + D reaction, in which two broad peaks for backward-scattered HF(v' = 2 and 3) products clearly emerge at collision energies of 0.21 kilocalories per mole (kcal/mol) and 0.62 kcal/mol from differential cross sections measured over a range of energies. We attribute these features to excited Feshbach resonances trapped in the peculiar HF(v' = 4)-D vibrationally adiabatic potential in the postbarrier region. Quantum dynamics calculations on a highly accurate potential energy surface show that these resonance states correlate to the HD(v' = 1) state in the entrance channel and therefore can only be accessed by the vibrationally excited HD reagent.
Language英语
WOS IDWOS:000328644300055
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/137899
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
2.Univ Sci & Technol China, Ctr Adv Chem Phys, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Wang, Tao,Chen, Jun,Yang, Tiangang,et al. Dynamical Resonances Accessible Only by Reagent Vibrational Excitation in the F plus HD -> HF plus D Reaction[J]. SCIENCE,2013,342(6165):1499-1502.
APA Wang, Tao.,Chen, Jun.,Yang, Tiangang.,Xiao, Chunlei.,Sun, Zhigang.,...&Zhang, Dong H..(2013).Dynamical Resonances Accessible Only by Reagent Vibrational Excitation in the F plus HD -> HF plus D Reaction.SCIENCE,342(6165),1499-1502.
MLA Wang, Tao,et al."Dynamical Resonances Accessible Only by Reagent Vibrational Excitation in the F plus HD -> HF plus D Reaction".SCIENCE 342.6165(2013):1499-1502.
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