Photodissociation dynamics of OCS near 128 nm: S(P-3(J=2,1,0)), S(D-1(2)) and S(S-1(0)) channels(dagger)

Wang, Si-wen1,2; Yuan, Dao-fu1,2; Chen, Wen-tao1,2; Tang, Ling1,2; Yu, Sheng-rui3; Yan, Xue-ming4,5; Wang, Xing-an1,2

2020-04

10.1063/1674-0068/cjcp1911179

化学物理学报   影响因子和分区

1674-0068

2327-2244

Here we report the study of the photodissociation dynamics of carbonyl sulfide in the vacuum ultraviolet region using the time-sliced velocity map ion imaging technique. Images of S(P-3(J=2,1,0)), S(D-1(2)) and S(S-1(0)) products were measured at four photolysis wave-lengths of 129.32, 128.14, 126.99, and 126.08 nm, respectively. Four main dissociation channels: S(P-3(J=2,1,0))+CO(X-1 sigma(+)), S(P-3(J=2,1,0))+CO(A(3)pi), S(D-1(2))+CO(X-1 sigma(+)) and S(S-1(0))+CO(X-1 sigma(+)) channels, have been clearly observed and identified. Vibrational states of the CO co-products were partially resolved in the experimental images. From these images, the product total kinetic energy releases, the branching ratios and angular distributions of products have been derived. While the S(P-3(J=2,1,0))+CO(A(3)pi) product channel is formed through the adiabatic dissociation process after the excitation to the (3(1)sigma(+)) excited state, the results suggest that strong nonadiabatic coupling plays an important role in the formation of other three channels.

Vacuum ultraviolet photodissociation Carbonyl sulfide Velocity map ion imaging

SCI ; EI ; CPCI-S

英语

其他

National Key R&D Program of China[2016YFF0200500] ; National Natural Science Foundation of China[21473173][21590802][21327901][21773213]

Physics

Physics, Atomic, Molecular & Chemical

WOS:000537143100008

CHINESE PHYSICAL SOC

20213210737087

Excited states ; Imaging techniques ; Kinetic energy ; Kinetics ; Photolysis ; Sulfur compounds

Imaging Techniques:746 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Classical Physics; Quantum Theory; Relativity:931

Web of Science

1.Univ Sci & Technol China, Hefei Natl Lab Mat Sci Microscale, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China
3.Zhejiang Normal Univ, Hangzhou Inst Adv Studies, Hangzhou 311231, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
5.Southern Univ Sci & Technol, Sch Sci, Shenzhen 518055, Peoples R China

Wang, Si-wen,Yuan, Dao-fu,Chen, Wen-tao,et al. Photodissociation dynamics of OCS near 128 nm: S(P-3(J=2,1,0)), S(D-1(2)) and S(S-1(0)) channels(dagger)[J]. 化学物理学报,2020,33(2):167-172.

Wang, Si-wen.,Yuan, Dao-fu.,Chen, Wen-tao.,Tang, Ling.,Yu, Sheng-rui.,...&Wang, Xing-an.(2020).Photodissociation dynamics of OCS near 128 nm: S(P-3(J=2,1,0)), S(D-1(2)) and S(S-1(0)) channels(dagger).化学物理学报,33(2),167-172.

Wang, Si-wen,et al."Photodissociation dynamics of OCS near 128 nm: S(P-3(J=2,1,0)), S(D-1(2)) and S(S-1(0)) channels(dagger)".化学物理学报 33.2(2020):167-172.