Photodissociation dynamics of SO2 between 193 and 201 nm

Luo, Zijie1,2,3; Zhang, Zhaoxue2,3; Yang, Shuaikang2,3; Zhao, Yarui2,3; Li, Zhenxing2,3; He, Zhigang2,3; Chang, Yao2,3; Che, Li4; Yuan, Kaijun2,3,5,6; Yang, Xueming2,3,5,7,8

2023-07-14

10.1063/5.0157095

JOURNAL OF CHEMICAL PHYSICS   影响因子和分区

0021-9606

1089-7690

The nonadiabatic interactions between the (C) over tilde state and neighboring electronic states of SO2 have attracted much attention; however, the predissociation mechanisms are not yet completely understood. In this work, the predissociation dynamics of SO2 via its (C) over tilde state have been investigated at lambda = 193-201 nm by using the time-sliced velocity map ion imaging technique. The translational energy distributions and the branching ratios of the O(P-3(J=2,1,0)) spin-orbit products at six photolysis wavelengths have been acquired. The SO((3)Sigma(-)) product population gradually decreases in v = 0 and increases in v = 2 as the photolysis wavelength decreases. The branching ratios of O(P-3(J=2,1,0)) products are almost similar at most wavelengths, except at 194.8 nm. Our data suggest that the predissociation between 193 and 201 nm is via an avoided crossing between the (C) over tilde state and the repulsive triplet 2(3)A' state. The state-to-state dynamical pictures shown in this work provide a rigorous test of the potential energy surfaces (PESs) of the SO2 and the nonadiabatic couplings between these PESs.

SCI ; EI

英语

其他

National Natural Science Foundation of China["22288201","22225303","22103087","21973010","DICP I202112"] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[GJJSTD20220001] ; Innovation Program for Quantum Science and Technology[2021ZD0303304] ; Guangdong Science and Technology Program["2019JC01X091","ZDSYS20200421111001787"] ; Shenzhen Science and Technology Program[XLYC1907032] ; LiaoNing Revitalization Talents Program[22241304] ; null[2019ZT08L455]

Chemistry ; Physics

Chemistry, Physical ; Physics, Atomic, Molecular & Chemical

WOS:001029391600008

AIP Publishing

20233014428542

Photodissociation ; Photolysis ; Potential energy ; Quantum chemistry

Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Electronic Structure of Solids:933.3

CHEMISTRY

Web of Science

1.Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Coherent Light Source, Dalian 116023, Peoples R China
4.Dalian Maritime Univ, Sch Sci, Dept Phys, Dalian 116026, Peoples R China
5.Hefei Natl Lab, Hefei 230088, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Southern Univ Sci & Technol, Coll Sci, Dept Chem, Shenzhen 518055, Peoples R China
8.Southern Univ Sci & Technol, Coll Sci, Ctr Adv Light Source Res, Shenzhen 518055, Peoples R China

Luo, Zijie,Zhang, Zhaoxue,Yang, Shuaikang,et al. Photodissociation dynamics of SO2 between 193 and 201 nm[J]. JOURNAL OF CHEMICAL PHYSICS,2023,159(2).

Luo, Zijie.,Zhang, Zhaoxue.,Yang, Shuaikang.,Zhao, Yarui.,Li, Zhenxing.,...&Yang, Xueming.(2023).Photodissociation dynamics of SO2 between 193 and 201 nm.JOURNAL OF CHEMICAL PHYSICS,159(2).

Luo, Zijie,et al."Photodissociation dynamics of SO2 between 193 and 201 nm".JOURNAL OF CHEMICAL PHYSICS 159.2(2023).