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Chin. Phys. B, 2020, Vol. 29(2): 023105    DOI: 10.1088/1674-1056/ab6554
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Effect of isotope on state-to-state dynamics for reactive collision reactions O(3P)+H2+→OH++H and O(3P)+H2+→OH+H+ in ground state 12A" and first excited 12A' potential energy surfaces

Juan Zhao(赵娟)1, Ting Xu(许婷)2, Lu-Lu Zhang(张路路)1, Li-Fei Wang(王立飞)1
1 School of Science, Shandong Jiaotong University, Jinan 250357, China;
2 School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
Abstract  We carry out quantum scattering dynamics and quasi-classical trajectory (QCT) calculations for the O+H2+ reactive collision in the ground (12A') and first excited (12A') potential energy surface. We calculate the reaction probabilities of O+H2+(v=0,j=0)→OH++H and O+H2+(v=0,j=0)→OH+H+ reaction for total angular momentum J=0. The results calculated by QCT are consistent with those from quantum mechanical wave packet. Using the QCT method, we generate in the center-of-mass frame the product state-resolved integral cross-sections (ICSs); two commonly used generalized polarization-dependent differential cross-sections (PDDCSs), (2π/σ)(dσ00/dωt), (2π/σ)(dσ20/dωt); and three angular distributions of the product rotational vectors, P(θr ), P(φr ), and P(θr,φr). We discuss the influence on the scalar and vector properties of the potential energy surface, the collision energy, and the isotope mass. Since there are deep potential wells in these two potential energy surfaces, their kinetic characteristics are similar to each other and the isotopic effect is not obvious. However, the well depths and configurations of the two potential energy surfaces are different, so the effects of isotopic substitution on the integral cross-section and the rotational polarization of product are different.
Keywords:  quasi-classical trajectory      state-to-state      isotopic substitution      rotational polarization of product  
Received:  08 November 2019      Revised:  04 December 2019      Published:  05 February 2020
PACS:  31.15.xv (Molecular dynamics and other numerical methods)  
  34.50.-s (Scattering of atoms and molecules)  
  03.67.Lx (Quantum computation architectures and implementations)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11504206) and the Shandong Jiaotong University PhD Research Start-up Fund, China.
Corresponding Authors:  Juan Zhao     E-mail:  zhaojuan@sdjtu.edu.cn

Cite this article: 

Juan Zhao(赵娟), Ting Xu(许婷), Lu-Lu Zhang(张路路), Li-Fei Wang(王立飞) Effect of isotope on state-to-state dynamics for reactive collision reactions O(3P)+H2+→OH++H and O(3P)+H2+→OH+H+ in ground state 12A" and first excited 12A' potential energy surfaces 2020 Chin. Phys. B 29 023105

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