Two-photon photodissociation dynamics of H2O via the D approximate to electronic state
文献类型：期刊论文
| 作者 | Yuan, Kaijun; Cheng, Lina; Cheng, Yuan; Guo, Qing; Dai, Dongxu; Yang, Xueming |
| 刊名 | journal of chemical physics
 |
| 出版日期 | 2009-08-21 |
| 卷号 | 131期号:7 |
| 关键词 | photodissociation predissociation reaction kinetics rotational-vibrational energy transfer Rydberg states spectrochemical analysis time of flight spectra two-photon spectra water |
| 英文摘要 | photodissociation dynamics of h2o via the d approximate to state by two-photon absorption have been investigated using the h-atom rydberg tagging time-of-flight technique. the action spectrum of the d approximate to <- x approximate to transition band has been measured. the predissociation lifetime of the d approximate to state is determined to be about 13.5 fs. the quantum state-resolved oh product translational energy distributions and angular distributions have also been measured. by carefully simulating these distributions, quantum state distributions of the oh product as well as the state-resolved angular anisotropy parameters were determined. the most important pathway of the h2o dissociation via the d approximate to state leads to the highly rotationally excited oh(x,v=0) products. vibrationally excited oh(x) products (up to v=10) and electronically excited oh(a,v=0,1,2) have also been observed. the oh(a)/oh(x) branching ratios are determined to be 17.9% at 244.540 nm (2 omega(1)=81 761.4 cm(-1)) and 19.9% at 244.392 nm (2 omega(2)=81 811 cm(-1)), which are considerably smaller than the value predicted by the theory. these discrepancies are attributed to the nonadiabatic coupling effect between the b approximate to and d approximate to surfaces at the bent geometry. |
| 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] | dissociation dynamics ; 121.6 nm ; predissociation-dynamics ; multiphoton ionization ; (d)over-tilde states ; rydberg states ; water ; d2o ; oh ; photofragmentation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000269287200016 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141482]  |
| 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 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Kaijun,Cheng, Lina,Cheng, Yuan,et al. Two-photon photodissociation dynamics of H2O via the D approximate to electronic state[J]. journal of chemical physics,2009,131(7). |
| APA | Yuan, Kaijun,Cheng, Lina,Cheng, Yuan,Guo, Qing,Dai, Dongxu,&Yang, Xueming.(2009).Two-photon photodissociation dynamics of H2O via the D approximate to electronic state.journal of chemical physics,131(7). |
| MLA | Yuan, Kaijun,et al."Two-photon photodissociation dynamics of H2O via the D approximate to electronic state".journal of chemical physics 131.7(2009). |
入库方式： OAI收割
来源：大连化学物理研究所
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