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Rotational State Specific Dissociation Dynamics of HOD -> H plus OD via Two-Photon Excitation to the (C)over-tilde Electronic State
Cheng, Lina; Yuan, Kaijun; Cheng, Yuan; Guo, Qing; Wang, Tao; Dai, Dongxu; Yang, Xueming
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
2011-03-10
DOI10.1021/jp109169f
Volume115Issue:9Pages:1500-1507
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordMULTIPHOTON IONIZATION SPECTROSCOPY ; PHOTODISSOCIATION DYNAMICS ; 121.6 NM ; MOLECULAR PREDISSOCIATION ; H2O ; WATER ; D2O ; PHOTOFRAGMENTATION ; BOND ; DISTRIBUTIONS
AbstractThe dissociation dynamics of HOD via two-photon excitation to the (C) over tilde state have been investigated using the H-atom Rydberg tagging time-of-flight (TOF) technique. The H-atom action spectrum for the C <- (X) over tilde transition shows resolved rotational structure. Product translational energy distributions and angular distributions have also been recorded for the H + OD channel for, three excited levels each with K-a = 2. From these distributions, quantum state distributions and angular anisotropy parameters (beta(2) and beta(4)) for the OD product were determined. These results are consistent with the nonadiabatic predissociation picture illustrated in the one-photon dissociation process for H2O. The heterogeneous dissociation pathway via Coriolis coupling is the dominant dissociation process in the present study. A high proportion of the total available energy is deposited into the rotational energy of the OD product. The anisotropic recoil distributions reveal the distinctive contributions from the alignment of the excited states and the dissociation process. Comparisons are also made between the results for HOD and H2O via the equivalent rotational transitions. The OH bond energy, D-o(H-OD), of the HOD molecule is also determined to be 41283.0 +/- 5 cm(-1).
Language英语
WOS IDWOS:000287832900006
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142630
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State key Lab Mol React Dynam, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Lina,Yuan, Kaijun,Cheng, Yuan,et al. Rotational State Specific Dissociation Dynamics of HOD -> H plus OD via Two-Photon Excitation to the (C)over-tilde Electronic State[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2011,115(9):1500-1507.
APA Cheng, Lina.,Yuan, Kaijun.,Cheng, Yuan.,Guo, Qing.,Wang, Tao.,...&Yang, Xueming.(2011).Rotational State Specific Dissociation Dynamics of HOD -> H plus OD via Two-Photon Excitation to the (C)over-tilde Electronic State.JOURNAL OF PHYSICAL CHEMISTRY A,115(9),1500-1507.
MLA Cheng, Lina,et al."Rotational State Specific Dissociation Dynamics of HOD -> H plus OD via Two-Photon Excitation to the (C)over-tilde Electronic State".JOURNAL OF PHYSICAL CHEMISTRY A 115.9(2011):1500-1507.
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