Vacuum ultraviolet photodissociation dynamics of OCS via the F Rydberg state: The O (3PJ=2,1,0) product channels

Luo，Chang1; Zhou，Lin1; Chen，Wentao1; Yuan，Daofu1; Yu，Shengrui1; Wang，Siwen1; Parker，David H.2; Yang，Xueming3,4; Wang，Xingan1

2023-04-28

10.1063/5.0146754

Journal of Chemical Physics   影响因子和分区

0021-9606

1089-7690

We study the vacuum ultraviolet (VUV) photodissociation dynamics of carbonyl sulfide (OCS) by using the time sliced velocity map ion imaging technique. Experimental images of the dissociative O (P) products were acquired at five VUV photolysis wavelengths from 133.26 to 139.96 nm that correspond to the F Rydberg state of OCS. High vibrational states of the carbon monosulfide (CS) co-products are partially resolved in the images. The product total kinetic energy releases, angular distributions, and the product state branching ratios were derived from the experimental images. Notably, it is found that the anisotropic parameters change systematically with the photolysis wavelength. The anisotropic parameters and the product state branching ratios are significantly sensitive to the J quantum number of the O (P) products. The phenomenon indicates that multiple nonadiabatic pathways are strongly involved in the photodissociation processes.

SCI ; EI

英语

其他

National Natural Science Foundation of China[22125302] ; Guangdong Science and Technology Program["2019ZT08L455","2019JC01X091"]

Chemistry ; Physics

Chemistry, Physical ; Physics, Atomic, Molecular & Chemical

WOS:001010676000015

AIP Publishing

20231914068482

Anisotropy ; Kinetic energy ; Kinetics ; Photolysis ; Quantum theory ; Rydberg states ; Sulfur compounds

Fluid Flow, General:631.1 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Classical Physics; Quantum Theory; Relativity:931 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Quantum Theory; Quantum Mechanics:931.4

CHEMISTRY

2-s2.0-85153687557

Scopus

1.Department of Chemical Physics,University of Science and Technology of China,Hefei,230026,China
2.Institute for Molecules and Materials,Radboud University Nijmegen,Nijmegen,Netherlands
3.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
4.Department of Chemistry,School of Science,Southern University of Science and Technology,Shenzhen,518055,China

Luo，Chang,Zhou，Lin,Chen，Wentao,et al. Vacuum ultraviolet photodissociation dynamics of OCS via the F Rydberg state: The O (3PJ=2,1,0) product channels[J]. Journal of Chemical Physics,2023,158(16).

Luo，Chang.,Zhou，Lin.,Chen，Wentao.,Yuan，Daofu.,Yu，Shengrui.,...&Wang，Xingan.(2023).Vacuum ultraviolet photodissociation dynamics of OCS via the F Rydberg state: The O (3PJ=2,1,0) product channels.Journal of Chemical Physics,158(16).

Luo，Chang,et al."Vacuum ultraviolet photodissociation dynamics of OCS via the F Rydberg state: The O (3PJ=2,1,0) product channels".Journal of Chemical Physics 158.16(2023).