Crossed Molecular Beam Study of the H + HD ? H-2+ D Reaction at0.60 and 1.26 eV Using the Near-Threshold Ionization Velocity Map Ion Imaging

Luo, Chang1; Tan, Yuxin1; Li, Shihao1; Lu, Zhibing1; Shu, Yiyang1; Chen, Wentao1; Yuan, Daofu1; Yang, Xueming2,3; Wang, Xingan1

2022-07-01

10.1021/acs.jpca.2c032964444J

JOURNAL OF PHYSICAL CHEMISTRY A   Impact Factor & Quartile

1089-5639

1520-5215

By using the 1 + 1' near-threshold ionization velocity map ion imaging technique, state-to-state reactive differential cross sections have been measured for the H + HD -> H-2 + D reaction. High-resolution images of the D products, with the rotational states of the H-2 co-products clearly resolved, were acquired at the collision energies of 0.60 and 1.26 eV, respectively. It is found that the angular distribution is predominantly backward-scattering at the collision energy of 0.60 eV. However, at 1.26 eV, where the collision energy is higher, the angular distribution becomes forward-backward-scattering. Nota -bly, at both collision energies, the main peaks of backward-scattered products gradually shift from backward toward sideways direction as the rotational quantum number of H-2 increases. Moreover, in the forward direction, fast angular oscillations, which are induced by specific partial waves have also been observed at 1.26 eV. These features show a strong correlation between the product states and angular distributions and also indicate the unique role of partial waves in quantum reactive scattering.

SCI

English

Others

National Key R&D Program of China[2016YFF0200500] ; National Natural Science Foundation of China["22125302","21327901"]

Chemistry ; Physics

Chemistry, Physical ; Physics, Atomic, Molecular & Chemical

WOS:000830791300001

AMER CHEMICAL SOC

CHEMISTRY

Web of Science

1.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Southern Univ Sci & Technol, Sch Sci, Dept Chem, Shenzhen 518055, Peoples R China

Luo, Chang,Tan, Yuxin,Li, Shihao,et al. Crossed Molecular Beam Study of the H + HD ? H-2+ D Reaction at0.60 and 1.26 eV Using the Near-Threshold Ionization Velocity Map Ion Imaging[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2022.

Luo, Chang.,Tan, Yuxin.,Li, Shihao.,Lu, Zhibing.,Shu, Yiyang.,...&Wang, Xingan.(2022).Crossed Molecular Beam Study of the H + HD ? H-2+ D Reaction at0.60 and 1.26 eV Using the Near-Threshold Ionization Velocity Map Ion Imaging.JOURNAL OF PHYSICAL CHEMISTRY A.

Luo, Chang,et al."Crossed Molecular Beam Study of the H + HD ? H-2+ D Reaction at0.60 and 1.26 eV Using the Near-Threshold Ionization Velocity Map Ion Imaging".JOURNAL OF PHYSICAL CHEMISTRY A (2022).