Tunable VUV photochemistry using Rydberg H-atom time-of-flight spectroscopy
- State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023 (China)
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}{sub VUV}=121-190 nm. Preliminary results on the H{sub 2}O photodissociation in the B-tilde 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.
- OSTI ID:
- 21266728
- Journal Information:
- Review of Scientific Instruments, Vol. 79, Issue 12; Other Information: DOI: 10.1063/1.2999545; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
Similar Records
Reactions of small molecular systems
Two-photon excitation and ionization of H-atoms with tunable VUV at Lyman-. cap alpha