Photodissociation dynamics of H2S+ near 325 nm

Luan，Zhiwen1; Fu，Yanlin2; Tan，Yuxin1; Wang，Yaling1; Liu，Anwen1; Wang，Tao2,3; Zhou，Xiaoguo1; Fu，Bina2; Zhang，Dong H.2; Yuan，Daofu4; Wang，Xingan1; Yang，Xueming2,3

2023-06-01

10.1063/1674-0068/cjcp2304041

Chinese Journal of Chemical Physics   影响因子和分区

1674-0068

2327-2244

We study the photodissociation dynamics of the hydrogen sulfide cations (HS) using the time-sliced velocity map ion imaging (VMI) technique and high-accuracy calculations. High-resolution ion images of the S(S) products were measured at four photolysis wavelengths of 325.158, 325.200, 325.243, 325.307 nm, which correspond to the excitation to the AA(0,13,0) K=1 state of HS. 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 AA and BB states at C configurations, as well as relaxation of the symmetry to C in the conical intersection region between the two states, plays a key role in the photodissociation process.

Full-dimensional potential energy surface Hydrogen sulfide cation Rotational state-resolved image Velocity map ion imaging

SCI ; EI

英语

其他

National Natural Science Foundation of China["22125302","22173099","22288201","21873089","21973037"] ; Guangdong Science and Technology Program["2019ZT08L455","2019JC01X091"] ; Shenzhen Science and Technology Program[ZDSYS20200421111001787]

Physics

Physics, Atomic, Molecular & Chemical

WOS:001038602300006

CHINESE PHYSICAL SOC

20233114468419

Excited states ; Kinetic energy ; Kinetics ; Molecular physics ; Photodissociation ; Photolysis ; Positive ions ; Potential energy ; Potential energy surfaces ; Quantum chemistry ; Rate constants ; Sulfur determination

Fluid Flow, General:631.1 ; Chemistry:801 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Mathematical Statistics:922.2 ; Classical Physics; Quantum Theory; Relativity:931 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

2-s2.0-85166119636

Scopus

1.Department of Chemical Physics,University of Science and Technology of China,Hefei,230026,China
2.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
3.Department of Chemistry,School of Science,Southern University of Science and Technology,Shenzhen,518055,China
4.Hefei National Research Center for Physical Science at the Microscale,University of Science and Technology of China,Hefei,230026,China

Luan，Zhiwen,Fu，Yanlin,Tan，Yuxin,et al. Photodissociation dynamics of H2S+ near 325 nm[J]. Chinese Journal of Chemical Physics,2023,36(3):289-297.

Luan，Zhiwen.,Fu，Yanlin.,Tan，Yuxin.,Wang，Yaling.,Liu，Anwen.,...&Yang，Xueming.(2023).Photodissociation dynamics of H2S+ near 325 nm.Chinese Journal of Chemical Physics,36(3),289-297.

Luan，Zhiwen,et al."Photodissociation dynamics of H2S+ near 325 nm".Chinese Journal of Chemical Physics 36.3(2023):289-297.