VUV photodissociation of DNCO: dynamics of the D atom elimination channel

Xie, Ting1,2; Su, Shu3; Yu, Shengrui4; Luo, Zijie3; Chen, Zhichao3; Wang, Xingan1,2; Yuan, Kaijun3; Yang, Xueming3,5

2020-09-17

10.1080/00268976.2020.1821923

MOLECULAR PHYSICS   影响因子和分区

0026-8976

1362-3028

The D atom Rydberg tagging time-of-flight technique was applied to investigate the photodissociation dynamics of DNCO in the vacuum ultraviolet 133-137 nm region. The D atom product was detected and the corresponding product translational energy distributions and angular distributions were obtained. Three product channels, D + NCO(X-2 pi), D + NCO(A(2)sigma(+)) and D + NCO(B-2 pi), which arise from different dissociation pathways have been observed. It is found that the D + NCO(X-2 pi) channel involves two different dissociation pathways; one is via internal conversion from the excited state to the S(0)state, and the other is via internal conversion from the excited state to the S(1)state. The D + NCO(A(2)sigma(+)) channel was ascribed to be from dissociation on S(2)surface, and the D + NCO(B-2 pi) channel possibly come from a relatively slow dissociation process. Vibrational structures observed in the D + NCO(A(2)sigma(+)) channel shows that there is dominant bending with a little stretching vibrational excitation of NCO(A(2)sigma(+)). This is consistent with what has been found in the previous study following VUV photodissociation of HNCO in a similar wavelength region.

Vacuum ultraviolet photodissociation dynamics isocyanic acid (HNCO) Rydberg tagging time-of-flight spectroscopy

SCI ; EI

英语

通讯

National Key R&D Programof China[2016YFF0200500] ; National Natural Science Foundation of China[21922306][21590802] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB17000000]

Chemistry ; Physics

Chemistry, Physical ; Physics, Atomic, Molecular & Chemical

WOS:000570274700001

TAYLOR & FRANCIS LTD

20203809213107

Atoms ; Dynamics ; Excited states

Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Univ Sci & Technol China, Hefei Natl Lab Mat Sci Microscale, 96 Jinzhai Rd, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Dept Chem Phys, 96 Jinzhai Rd, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, 457 Zhongshan Rd, Dalian 116023, Peoples R China
4.Zhejiang Normal Univ, Hangzhou Inst Adv Studies, Hangzhou, Peoples R China
5.Southern Univ Sci & Technol, Coll Sci, Dept Chem, 1088 Xueyuan Rd, Shenzhen 518055, Peoples R China

Xie, Ting,Su, Shu,Yu, Shengrui,et al. VUV photodissociation of DNCO: dynamics of the D atom elimination channel[J]. MOLECULAR PHYSICS,2020,119(1-2).

Xie, Ting.,Su, Shu.,Yu, Shengrui.,Luo, Zijie.,Chen, Zhichao.,...&Yang, Xueming.(2020).VUV photodissociation of DNCO: dynamics of the D atom elimination channel.MOLECULAR PHYSICS,119(1-2).

Xie, Ting,et al."VUV photodissociation of DNCO: dynamics of the D atom elimination channel".MOLECULAR PHYSICS 119.1-2(2020).