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Velocity map imaging study of OCS photodissociation followed by S(S-1) autoionization at 157 nm
Wu, SM; Yang, XM; Parker, DH
刊名MOLECULAR PHYSICS
2005-07-10
DOI10.1080/00268970500054714
103期:13页:1797-1807
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
关键词[WOS]NONADIABATIC BENDING DISSOCIATION ; PHOTOELECTRON-SPECTROSCOPY ; SUPEREXCITED STATES ; PHOTO-IONIZATION ; EXCITATION ; ELECTRONS ; DYNAMICS ; MONOMERS ; CLUSTERS ; CM(-1)
英文摘要Atomic sulphur ions (S+) were observed directly by crossing a carbonyl sulphide (OCS) molecular beam with a F-2 laser. In this study both S+ ion and electron images were measured using the velocity map imaging technique. The results imply that S+ is produced from the well-known photodissociation of OCS at 157nm leading to the dominant S(S-1) + CO((1)Sigma(+)) channel, and then the excited S( 1 S) atom is directly ionized by another 157nm photon. Correlated vibrationally resolved angular distributions and internal energy distribution of the CO coproducts are reported here and compared with previous studies. This experiment yields strong and sharp S+ images which may be useful for calibrating any imaging or laser ionization apparatus when using a 157nm laser. A number of technical aspects such as corrections for partial slicing and imperfect laser polarization are described. Abstraction of product angular distributions using both polarized and unpolarized photolysis lasers is also demonstrated using velocity map imaging.
语种英语
WOS记录号WOS:000229940900012
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被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139681
专题中国科学院大连化学物理研究所
作者单位1.Radboud Univ Nijmegen, Inst Mol & Mat, Dept Mol & Laser Phys, NL-6500 GL Nijmegen, Netherlands
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
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Wu, SM,Yang, XM,Parker, DH. Velocity map imaging study of OCS photodissociation followed by S(S-1) autoionization at 157 nm[J]. MOLECULAR PHYSICS,2005,103(13):1797-1807.
APA Wu, SM,Yang, XM,&Parker, DH.(2005).Velocity map imaging study of OCS photodissociation followed by S(S-1) autoionization at 157 nm.MOLECULAR PHYSICS,103(13),1797-1807.
MLA Wu, SM,et al."Velocity map imaging study of OCS photodissociation followed by S(S-1) autoionization at 157 nm".MOLECULAR PHYSICS 103.13(2005):1797-1807.
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