We study the photodissociation dynamics of the hydrogen sulfide cations (H2S+) using the time-sliced velocity map ion imaging (VMI) technique and high-accuracy calculations. High-resolution ion images of the S+(4S) products were measured at four photolysis wavelengths of 325.158, 325.200, 325.243, 325.307 nm, which correspond to the excitation to the A2A1(0,13,0) K=1 state of H2S+. Rotational state-resolved total kinetic energy releases and angular distributions have been derived as a function of the photolysis wavelengths. Notably, photolysis wavelength dependent product rotational state and anisotropy parameter distributions have been clearly observed. Full-dimensional potential energy surface characterization suggests that nonadiabatic coupling between A2A1 and B2B2 states at C2v configurations, as well as relaxation of the symmetry to Cs in the conical intersection region between the two states, plays a key role in the photodissociation process.
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June 2023
Research Article|
June 01 2023
Photodissociation dynamics of H2S+ near 325 nm†
Special Collection:
Virtual issue on Chemical Dynamics 2023
Zhiwen Luan;
Zhiwen Luan
‡
a
Department of Chemical Physics, University of Science and Technology of China
, Hefei 230026, China
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Yanlin Fu;
Yanlin Fu
‡
b
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
, Dalian 116023, China
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Yuxin Tan;
Yuxin Tan
a
Department of Chemical Physics, University of Science and Technology of China
, Hefei 230026, China
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Yaling Wang;
Yaling Wang
a
Department of Chemical Physics, University of Science and Technology of China
, Hefei 230026, China
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Anwen Liu;
Anwen Liu
a
Department of Chemical Physics, University of Science and Technology of China
, Hefei 230026, China
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Tao Wang;
Tao Wang
b
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
, Dalian 116023, China
c
Department of Chemistry, School of Science, Southern University of Science and Technology
, Shenzhen 518055, China
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Xiaoguo Zhou;
Xiaoguo Zhou
a
Department of Chemical Physics, University of Science and Technology of China
, Hefei 230026, China
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Bina Fu;
Bina Fu
b
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
, Dalian 116023, China
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Dong H. Zhang;
Dong H. Zhang
b
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
, Dalian 116023, China
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Daofu Yuan;
Daofu Yuan
*
d
Hefei National Research Center for Physical Science at the Microscale, University of Science and Technology of China
, Hefei 230026, China
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Xingan Wang;
Xingan Wang
*
a
Department of Chemical Physics, University of Science and Technology of China
, Hefei 230026, China
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Xueming Yang
Xueming Yang
b
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
, Dalian 116023, China
c
Department of Chemistry, School of Science, Southern University of Science and Technology
, Shenzhen 518055, China
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Chin. J. Chem. Phys. 36, 289–297 (2023)
Article history
Received:
April 27 2023
Accepted:
May 17 2023
Citation
Zhiwen Luan, Yanlin Fu, Yuxin Tan, Yaling Wang, Anwen Liu, Tao Wang, Xiaoguo Zhou, Bina Fu, Dong H. Zhang, Daofu Yuan, Xingan Wang, Xueming Yang; Photodissociation dynamics of H2S+ near 325 nm. Chin. J. Chem. Phys. 1 June 2023; 36 (3): 289–297. https://doi.org/10.1063/1674-0068/cjcp2304041
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