A new crossed molecular beam apparatus using time-sliced ion velocity imaging technique

Guorong Wu; Weiqing Zhang; Huilin Pan; Quan Shuai; Bo Jiang; Dongxu Dai; Xueming Yang

doi:10.1063/1.2978004

A new crossed molecular beam apparatus using time-sliced ion velocity imaging technique

Rev Sci Instrum. 2008 Sep;79(9):094104. doi: 10.1063/1.2978004.

Authors

Guorong Wu¹, Weiqing Zhang, Huilin Pan, Quan Shuai, Bo Jiang, Dongxu Dai, Xueming Yang

Affiliation

¹ State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People's Republic of China.

PMID: 19044435
DOI: 10.1063/1.2978004

Abstract

A new crossed molecular beam apparatus has been constructed for investigating polyatomic chemical reactions using the time-sliced ion velocity map imaging technique. A unique design is adopted for one of the two beam sources and allows us to set up the molecular beam source either horizontally or vertically. This can be conveniently used to produce versatile atomic or radical beams from photodissociation and as well as electric discharge. Intensive H-atom beam source with high speed ratio was produced by photodissociation of the HI molecule and was reacted with the CD(4) molecule. Vibrational-state resolved HD product distribution was measured by detecting the CD(3) product. Preliminary results were also reported on the F+SiH(4) reaction using the discharged F atom beam. These results demonstrate that this new instrument is a powerful tool for investigating chemical dynamics of polyatomic reactions.