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Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
A simple yet effective multipass reflector for vibrational excitation in molecular beams
Jens Riedel1, Shannon Yan, Hiroshi Kawamata
1Institute of Atomic and Molecular Sciences (IAMS), Academia Sinica, P.O. Box 23-166, Taipei 10617, Taiwan.
Abstract:
The fraction of molecules that can be vibrationally excited is often the limiting factor in many infrared laser excitation experiments, in particular, when using weak absorption bands. Reported here is a simple multipass reflector designed to overcome that obstacle. Its enhancement in pumping efficiency is demonstrated in a crossed-beam scattering experiment on the Cl+CH2D2(v1 or v6=1) reactions. Compared to a double-pass arrangement, the effective laser fluence for excitation is also characterized.
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