title: Tunable VUV photochemistry using Rydberg H-atom time-of-flight spectroscopy.
abstract: In this article, we report an experimental method for studying tunable vacuum ultraviolet (VUV) photochemistry using the H-atom Rydberg tagging technique. In this method, two VUV laser light beams were generated using nonlinear four-wave mixing scheme in a single Kr gas cell: one VUV beam is fixed at the 121.6 nm wavelength to probe the H-atom product through the Lyman alpha transition, the other beam can be tunable for photodissociating molecules in the wavelength range lambda(VUV)=121-190 nm. Preliminary results on the H(2)O photodissociation in the B state are reported here. These results suggest that the experimental method is a powerful tool for investigating photodissociation dynamics in the VUV region for molecules involving H-atom processes.
authors.affiliation: State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
authors.forename: Kaijun
authors.initials: K
authors.lastname: Yuan
authors.forename: Lina
authors.initials: L
authors.lastname: Cheng
authors.forename: Yuan
authors.initials: Y
authors.lastname: Cheng
authors.forename: Qing
authors.initials: Q
authors.lastname: Guo
authors.forename: Dongxu
authors.initials: D
authors.lastname: Dai
authors.forename: Xueming
authors.initials: X
authors.lastname: Yang