State-to-state reactive dynamics of H+HD→H2+D at 2.20 eV

Li，Shihao1; Shu，Yiyang1; Lu，Zhibing1; Luo，Chang1; Tan，Yuxin1; Chen，Wentao1; Yang，Xueming2,3; Wang，Xingan1,2

2023

10.1016/j.fmre.2023.01.013

Fundamental Research   Impact Factor & Quartile

2096-9457

2667-3258

As the simplest neutral triatomic reaction system, the H+H bimolecular reaction and its isotope variants are critically important for understanding elementary chemical reactions at the microscopic level. A high-resolution crossed molecular beams method was used in this work to explore the H+HD→H+D elementary chemical reaction at a collision energy of 2.20 eV. The product D atoms were detected using the 1+1′ (vacuum ultraviolet and ultraviolet laser) D-atom near-threshold ionization technique. Differential cross sections with vibrational and rotational state resolutions were experimentally acquired, covering the full scattering angular range. Particularly, fast forward oscillations were presented at several rovibrational states, such as v'=0, j'=10 and v'=1, j'=5. Our analysis shows that scattering partial waves close to J=36 mainly contribute to the oscillatory structures. Moreover, the branching ratios of the odd j' and even j' were also derived, revealing that the rotational populations of the H (v'=0) co-product strongly depend on the nuclear spin statistics.

D-atom near-threshold ionization Differential cross sections Fast forward-scattering oscillations Product branching ratios Velocity map ion imaging

English

Others

National Natural Science Foundation of China[21327901];National Natural Science Foundation of China[22125302];

2-s2.0-85152259920

Scopus

1.Center for Advanced Chemical Physics 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.Department of Chemistry,School of Science,Southern University of Science and Technology,Shenzhen,518055,China

Li，Shihao,Shu，Yiyang,Lu，Zhibing,et al. State-to-state reactive dynamics of H+HD→H2+D at 2.20 eV[J]. Fundamental Research,2023.

Li，Shihao.,Shu，Yiyang.,Lu，Zhibing.,Luo，Chang.,Tan，Yuxin.,...&Wang，Xingan.(2023).State-to-state reactive dynamics of H+HD→H2+D at 2.20 eV.Fundamental Research.

Li，Shihao,et al."State-to-state reactive dynamics of H+HD→H2+D at 2.20 eV".Fundamental Research (2023).