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A new Stark decelerator based surface scattering instrument for studying energy transfer at the gas-surface interface.

MPS-Authors
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Engelhart,  D. P.
Department of Dynamics and Surfaces, MPI for biophysical chemistry, Max Planck Society;

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Grätz,  F.
Department of Dynamics and Surfaces, MPI for biophysical chemistry, Max Planck Society;

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Wagner,  R. J. V.
Department of Dynamics and Surfaces, MPI for biophysical chemistry, Max Planck Society;

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

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

Fulltext (public)

2157853.pdf
(Publisher version), 8MB

Supplementary Material (public)
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Citation

Engelhart, D. P., Grätz, F., Wagner, R. J. V., Haak, H., Meijer, G., Wodtke, A. M., et al. (2015). A new Stark decelerator based surface scattering instrument for studying energy transfer at the gas-surface interface. Review of Scientific Instruments, 86(4): 43306. doi:10/1063/1.4918797.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-7CBB-7
Abstract
We report on the design and characterization of a new apparatus for performing quantum-state resolved surface scattering experiments. The apparatus combines optical state-specific molecule preparation with a compact hexapole and a Stark decelerator to prepare carrier gas-free pulses of quantum-state pure CO molecules with velocities controllable between 33 and 1000 m/s with extremely narrow velocity distributions. The ultrahigh vacuum surface scattering chamber includes homebuilt ion and electron detectors, a closed-cycle helium cooled single crystal sample mount capable of tuning surface temperature between 19 and 1337 K, a Kelvin probe for non-destructive work function measurements, a precision leak valve manifold for targeted adsorbate deposition, an inexpensive quadrupole mass spectrometer modified to perform high resolution temperature programmed desorption experiments and facilities to clean and characterize the surface.