Production of a beam of highly vibrationally excited CO using perturbations.

Bartels, N.; Schäfer, T.; Hühnert , J.; Field, R. W.; Wodtke, A. M.

doi:10.1063/1.4722090

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Production of a beam of highly vibrationally excited CO using perturbations.

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Bartels, N.
Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society;

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Schäfer, T.
Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society;

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Wodtke, A. M.
Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society;

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Citation

Bartels, N., Schäfer, T., Hühnert, J., Field, R. W., & Wodtke, A. M. (2012). Production of a beam of highly vibrationally excited CO using perturbations. The Journal of Chemical Physics, 136(21): 214201. doi:10.1063/1.4722090.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-A7F6-4

Abstract

An intense molecular beam of CO ( X 1 + ) in high vibrational states ( v = 17, 18) was produced by a new approach that we call PUMP – PUMP – PERTURB and DUMP . The basic idea is to access high vibrational states of CO e 3 − via a two-photon doubly resonant transition that is per- turbed by the A 1 state. DUMP -ing from this mixed (predominantly triplet) state allows access to high vibrational levels of CO ( X 1 + ). The success of the approach, which avoids the use of vacuum UV radiation in any of the excitation steps, is proven by laser induced fluorescence and resonance enhanced multi-photon ionization spectroscopy.