Effects of single quantum rotational excitation on reaction of F+D2at collision energies between 44 and 164 cm-1

Jiao，Zhirun1,2; Wang，Heilong1; Li，Yu1,2; Zhang，Hongtao1,4; Xiao，Chunlei1,4; Yang，Xueming1,3

2022-04-01

10.1063/1674-0068/cjcp2201002

化学物理学报   影响因子和分区

1674-0068

2327-2244

There is no general picture to describe the influences of reagent rotational excitation on the reaction, which proceeds via the tunnelling mechanism at collision energies far below the reaction barrier. Here we report a crossed beam study on the prototypical reaction of F + D2(v=0, j=0,1) → DF(v′) + D at collision energies between 44 and 164 cm-1 with the scheme of multichannel D-atom Rydberg tagging time-of-flight detection. Vibrational state resolved differential cross sections are obtained at v′=2, 3, 4 levels. The effects of reagent rotational excitation were investigated at an equivalent amount of total energy by precise tuning of translational energies. Compared with translation, the rotation of D2 is found to be more efficient to promote the title reaction. Profound differences introduced by rotation of D2 are also observed on the angular distribution and quantum state distribution of DF products. We hope the present work could provide an example for understanding the effects of reagent rotational excitation on the chemical reaction at energies that are much lower than the reaction barrier.

Crossed beam experiment Differential cross section Rotational excitation

SCI ; EI

英语

通讯

National Natural Sci-ence Foundation of China[21822305,21688102,22003067] ; Chinese Academy of Sciences[XDB17000000]

Physics

Physics, Atomic, Molecular & Chemical

WOS:000793461200004

CHINESE PHYSICAL SOC

20222012107751

Chemical reactions ; Excited states ; Quantum theory

Chemical Reactions:802.2 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

2-s2.0-85129800546

Scopus

1.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
2.School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing,100049,China
3.College of Science,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Chemical Physics,University of Science and Technology of China,Hefei,230026,China

Jiao，Zhirun,Wang，Heilong,Li，Yu,et al. Effects of single quantum rotational excitation on reaction of F+D2at collision energies between 44 and 164 cm-1[J]. 化学物理学报,2022,35(2):263-269.

Jiao，Zhirun,Wang，Heilong,Li，Yu,Zhang，Hongtao,Xiao，Chunlei,&Yang，Xueming.(2022).Effects of single quantum rotational excitation on reaction of F+D2at collision energies between 44 and 164 cm-1.化学物理学报,35(2),263-269.

Jiao，Zhirun,et al."Effects of single quantum rotational excitation on reaction of F+D2at collision energies between 44 and 164 cm-1".化学物理学报 35.2(2022):263-269.