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Imaging Isocyanic Acid Photodissociation at 193 nm: the NH(a1Δ)+ CO(X1Σ+) Channel
Zhi-guo Zhang*,Min Xin*,Shu-tao Zhao,Yang Chen*
Author NameAffiliationE-mail
Zhi-guo Zhang* School of Physics and Electronic Engineering, Fuyang Normal University, Fuyang 236041 China zhgzhang@mail.ustc.edu.cn 
Min Xin* School of Physics and Electronic Engineering, Fuyang Normal University, Fuyang 236041 China xinmin_0916@163.com 
Shu-tao Zhao School of Physics and Electronic Engineering, Fuyang Normal University, Fuyang 236041 China  
Yang Chen* Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China yangchen@ustc.edu.cn 
Abstract:
The photodissociation dynamics of isocyanic acid (HNCO) has been studied by the timesliced velocity map ion imaging technique at 193 nm. The NH(a1Δ) products were measured via (2+1) resonance enhanced multiphoton ionization. Images have been accumulated for the NH(a1Δ) rotational states in the ground and vibrational excited state (v=0 and 1). The center-of-mass translational energy distribution derived from the NH(a1Δ) images implies that the CO vibrational distributions are inverted for most of the measured 1NH(v|j) internal states. The anisotropic product angular distribution observed indicates a rapid dissociation process for the N-C bond cleavage. A bimodal rotational state distribution of CO(v) has been observed, this result implies that isocyanic acid dissociates in the S1 state in two different pathways.
Key words:  Isocyanic acid  Photodissociation dynamics  Sliced velocity map ion imaging
FundProject:
异氰酸分子NH(a1Δ)+CO(X1Σ+)通道在193nm的离子成像光解动力学研究
张志国*,辛敏*,赵书涛,陈旸*
摘要:
关键词:  
DOI:10.1063/1674-0068/31/cjcp1706120
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