Imaging the state-To-state dynamics of the h + d2 → hd + d reaction at 1.42 ev

Yuan, Daofu1; Chen, Wentao1; Luo, Chang1; Tan, Yuxin1; Li, Shihao1; Huang, Yin2; Sun, Zhigang2; Yang, Xueming2,3; Wang, Xingan1

2020

10.1021/acs.jpclett.9b03820

Journal of Physical Chemistry Letters   影响因子和分区

19487185

High-resolution state-resolved differential cross sections (DCSs) are of great importance in understanding quantum reaction dynamics, and they are the most detailed observables that can be experimentally measured. Here we report a synergic crossed molecular beam and quantum reaction dynamics study on the H + D2 reaction. With the time-sliced velocity map ion imaging (VMI) technique and the near-Threshold ionization scheme, we acquired the product rovibrational state-resolved DCSs of the H + D2 (v = 0, j = 0) → HD (v′, j′) + D reaction at a collision energy of 1.42 eV. For HD products with small j′ quantum numbers, significant forward scattering with clear angular oscillations was observed. The forward scattering disappears for the rotational states with large j′ quantum numbers. Interestingly, as the j′ number increases, the peak of the DCS shifts from backward to sideways systematically. The experimental observation agrees very well with theoretical quantum mechanical dynamics results, which reveals that the systematic shift of the peak in the DCS from backward scattering to sideways scattering can be understood very well with the strong correlation between the product rotational quantum number j′ and the specific partial waves (J = 3-12), whereas the forward angular oscillations are from the coherent summation of larger partial waves.
Copyright © 2020 American Chemical Society.

SCI ; EI

英语

NI论文

其他

[2016YFF0200500] ; Chinese Academy of Sciences[] ; National Natural Science Foundation of China[21590802]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000515424300007

American Chemical Society

20201108281082

Coherent scattering ; Dynamics ; Forward scattering ; Molecular beams

Electromagnetic Waves:711 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Hefei National Laboratory for Physical Sciences at the Microscale and 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.College of Science, Southern University of Science and Technology, Shenzhen; 518055, China

Yuan, Daofu,Chen, Wentao,Luo, Chang,et al. Imaging the state-To-state dynamics of the h + d2 → hd + d reaction at 1.42 ev[J]. Journal of Physical Chemistry Letters,2020,11(4):1222-1227.

Yuan, Daofu.,Chen, Wentao.,Luo, Chang.,Tan, Yuxin.,Li, Shihao.,...&Wang, Xingan.(2020).Imaging the state-To-state dynamics of the h + d2 → hd + d reaction at 1.42 ev.Journal of Physical Chemistry Letters,11(4),1222-1227.

Yuan, Daofu,et al."Imaging the state-To-state dynamics of the h + d2 → hd + d reaction at 1.42 ev".Journal of Physical Chemistry Letters 11.4(2020):1222-1227.