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题名: Imaging the Pair-Correlated HNCO Photodissociation: The NH(a(1)Delta) + CO(X-1 Sigma(+)) Channel
作者: Zhang, Zhiguo1, 2;  Chen, Zhichao2;  Huang, Cunshun2;  Chen, Yang1;  Dai, Dongxu2;  Parker, David H.3;  Yang, Xueming1, 2
刊名: JOURNAL OF PHYSICAL CHEMISTRY A
发表日期: 2014-04-03
DOI: 10.1021/jp500625m
卷: 118, 期:13, 页:2413-2418
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: The NH(a(1)Delta) + CO((XE+)-E-1) product channel for the photodissociation of HNCO at 201 nm was investigated using the sliced velocity map ion imaging technique with the detection of NH(a(1)Delta) products via (2 + 1) resonance enhanced multiphoton ionization (REMPI). Images were measured for the NH(a(1)Delta) rotational states in the ground and vibrational excited states (v = 0 and 1). Correlation between the NH(a(1)Delta) and CO rovibrational state distributions were determined from these images. Experimental results show that the vibrational distribution of the CO fragment in the NH(a(1)Delta) + CO(X-1 Sigma(+)) channel peaks at v = 1. The negative anisotropy parameter measured for the NH(a(1)Delta) (v = 0 and 1lj) products indicates a direct dissociation process for the N-C bond cleavage in the 5, state. A bimodal CO rotational distribution was observed, suggesting that HNCO dissociates in the S-1 state in two distinctive pathways.
关键词[WOS]: INTERNAL ENERGY-DISTRIBUTION ;  ISOCYANIC ACID HNCO ;  PHOTOINITIATED DECOMPOSITION ;  STATE DISTRIBUTIONS ;  ELECTRONIC STATES ;  AB-INITIO ;  193 NM ;  DISSOCIATION ;  PATHWAYS ;  DYNAMICS
语种: 英语
WOS记录号: WOS:000333948100004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145462
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
3.Univ Nijmegen, Dept Mol & Laser Phys, NL-6525 ED Nijmegen, Netherlands

Recommended Citation:
Zhang, Zhiguo,Chen, Zhichao,Huang, Cunshun,et al. Imaging the Pair-Correlated HNCO Photodissociation: The NH(a(1)Delta) + CO(X-1 Sigma(+)) Channel[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2014,118(13):2413-2418.
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