Ji-wei Sang, Dao-fu Yuan, Wen-tao Chen, Sheng-rui Yu, Chang Luo, Si-wen Wang, Tao Wang, Xue-ming Yang, Xing-an Wang. High Resolution Crossed Molecular Beams Study of the H+HD→H2+D Reaction[J]. Chinese Journal of Chemical Physics , 2019, 32(1): 123-128. doi: 10.1063/1674-0068/cjcp1901010
Citation: Ji-wei Sang, Dao-fu Yuan, Wen-tao Chen, Sheng-rui Yu, Chang Luo, Si-wen Wang, Tao Wang, Xue-ming Yang, Xing-an Wang. High Resolution Crossed Molecular Beams Study of the H+HD→H2+D Reaction[J]. Chinese Journal of Chemical Physics , 2019, 32(1): 123-128. doi: 10.1063/1674-0068/cjcp1901010

High Resolution Crossed Molecular Beams Study of the H+HD→H2+D Reaction

doi: 10.1063/1674-0068/cjcp1901010
Funds:  This work was supported by the National Key R&D Program of China (No.2016YFF0200500), the National Natural Science Foundation of China (No.21473173, No.21590802, No.21403207, No.21503206), and the Strategic Priority Research Program of Chinese Academy of Sciences (No.XDB17000000).
  • Received Date: 2019-01-12
  • The H+H2 reaction is the simplest chemical reaction system and has long been the prototype model in the study of reaction dynamics. Here we report a high resolution experimental investigation of the state-to-state reaction dynamics in the H+HD→H2+D reaction by using the crossed molecular beams method and velocity map ion imaging technique at the collision energy of 1.17 eV. D atom products in this reaction were probed by the near threshold 1+1'(vacuum ultraviolet+ultraviolet) laser ionization scheme. The ion image with both high angular and energy resolution were acquired. State-to-state differential cross sections was accurately derived. Fast forward scattering oscillations, relating with interference effects in the scattering process, were clearly observed for H2 products at H2(v'=0,j'=1) and H2(v'=0,j'=3) rovibrational levels. This study further demonstrates the importance of measuring high-resolution differential cross sections in the study of state-to-state reaction dynamics in the gas phase.

     

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