A crossed molecular beam apparatus with multi-channel Rydberg tagging time-of-flight detection

Li, Lulu1,2; Wang, Heilong2; Jiao, Zhirun2,3; Li, Yu2,3; Wang, Tao4; Wang, Xingan1; Xiao, Chunlei2; Yang, Xueming1,2,4

2020-07

10.1063/5.0014046

REVIEW OF SCIENTIFIC INSTRUMENTS   影响因子和分区

0034-6748

1089-7623

We report a new crossed molecular beam apparatus with the H atom Rydberg tagging detection technique. The multi-channel detection scheme with 15 microchannel plate (MCP) detectors enables simultaneously accumulating time-of-flight spectra over a wide range of scattering angles (112 degrees). The efficiency of data acquisition has been enhanced by an order of magnitude. The angular distribution of H atoms from photodissociation of CH4 at 121.6 nm was used for calibrating the detection efficiency of different MCP detectors. The differential cross section of the reaction F + H-2 -> HF + H at the collision of 6.9 meV was measured, demonstrating the feasibility and accuracy of this multi-channel detection method. This apparatus could be a powerful tool for investigating the dynamics of reactions at very low collision energy.

SCI ; EI

英语

通讯

Ministry of Science and Technology[2017YFF0104500] ; National Natural Science Foundation of China[21573226][21822305][21688102] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB17000000] ; Dalian Science and Technology Innovation Foundation[2018J11CY017]

Instruments & Instrumentation ; Physics

Instruments & Instrumentation ; Physics, Applied

WOS:000554856400001

AMER INST PHYSICS

20204209351092

Data acquisition ; Photodissociation ; Molecular beams ; Image storage tubes

Electron Tubes:714.1 ; Data Processing and Image Processing:723.2 ; Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3

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, Liaoning, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Sci, Beijing 100049, Peoples R China
4.Southern Univ Sci & Technol, Coll Sci, Shenzhen 518055, Guangdong, Peoples R China

Li, Lulu,Wang, Heilong,Jiao, Zhirun,et al. A crossed molecular beam apparatus with multi-channel Rydberg tagging time-of-flight detection[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2020,91(7).

Li, Lulu.,Wang, Heilong.,Jiao, Zhirun.,Li, Yu.,Wang, Tao.,...&Yang, Xueming.(2020).A crossed molecular beam apparatus with multi-channel Rydberg tagging time-of-flight detection.REVIEW OF SCIENTIFIC INSTRUMENTS,91(7).

Li, Lulu,et al."A crossed molecular beam apparatus with multi-channel Rydberg tagging time-of-flight detection".REVIEW OF SCIENTIFIC INSTRUMENTS 91.7(2020).