Angular momentum polarisation in the O(D-1) products of O-2 photolysis via the B-3 Sigma u(-) state
文献类型：期刊论文
| 作者 | Wu, Shiou-Min1; Chestakov, Dmitri1; Groenenboom, Gerrit C.1; van der Zande, Wim J.1; Parker, David H.1; Wu, Guorong2; Yang, Xueming2; Vallance, Claire3 |
| 刊名 | molecular physics
 |
| 出版日期 | 2010 |
| 卷号 | 108期号:7-9页码:1145-1157 |
| 关键词 | photodissociation molecular oxygen O(D-1) polarisation Schumann-Runge |
| 英文摘要 | the first fully allowed spectroscopic transition in o-2 is the b-3 sigma(-)(u) <- x-3 sigma(-)(g) transition comprising the well-known schumann-runge bands and continuum. we report a velocity-map imaging study in which the o(d-1) angular momentum polarisation and o(p-3) spin-orbit branching ratios arising from this process have been measured. we show that direct 157 nm excitation into the schumann-runge continuum leads to extremely strong angular momentum polarisation in the o(d-1) product. comparison with previous studies indicates that this is a general feature of dissociation via the b state. the fine structure branching ratios in the co-fragment o(p-3(j=2,1,0)) were measured to be 88.5 +/- 1.6 : 9.7 +/- 1.4 : 1.9 +/- 0.4. based on a consideration of the massey parameter for the system, the data were modelled using theoretical calculations based on adiabatic and diabatic models of the dissociation. while both models were able to describe some aspects of the dissociation accurately, neither was able to predict both the fine structure branching ratios of the o(p-3) products and the o(d-1(2)) alignment. we have also investigated o(d-1(2)) alignment arising from 203.8 and 205.5 nm photodissociation via the b-3 sigma(-)(u) state of o-2 vibrationally excited to v=6-11. as in the 157 nm photodissciation of vibrationally ground state o-2, strong polarisation of the o(d-1(2)) photofragments is observed. |
| 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] | 2-photon nonresonant excitation ; molecular-oxygen ; herzberg continuum ; atomic fragments ; photodissociation ; nm ; spectrum ; energy ; distributions ; alignment |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000278110600029 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141839]  |
| 专题 | 大连化学物理研究所_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, NL-6525 AJ Nijmegen, Netherlands 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China 3.Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England |
| 推荐引用方式 GB/T 7714 | Wu, Shiou-Min,Chestakov, Dmitri,Groenenboom, Gerrit C.,et al. Angular momentum polarisation in the O(D-1) products of O-2 photolysis via the B-3 Sigma u(-) state[J]. molecular physics,2010,108(7-9):1145-1157. |
| APA | Wu, Shiou-Min.,Chestakov, Dmitri.,Groenenboom, Gerrit C..,van der Zande, Wim J..,Parker, David H..,...&Vallance, Claire.(2010).Angular momentum polarisation in the O(D-1) products of O-2 photolysis via the B-3 Sigma u(-) state.molecular physics,108(7-9),1145-1157. |
| MLA | Wu, Shiou-Min,et al."Angular momentum polarisation in the O(D-1) products of O-2 photolysis via the B-3 Sigma u(-) state".molecular physics 108.7-9(2010):1145-1157. |
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来源：大连化学物理研究所
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