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

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.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Institute for Physical Chemistry, Georg-August University of Göttingen, Tammannstraße 6, 37077 Göttingen (Germany)
  2. (Germany)
  3. Fritz Haber Insitute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin (Germany)
  4. Radboud University, 6500 HC Nijmegen (Netherlands)
Publication Date:
OSTI Identifier:
22392451
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CARBON MONOXIDE; DEPOSITION; ENERGY TRANSFER; HELIUM; INTERFACES; IONS; MASS SPECTROMETERS; MONOCRYSTALS; QUANTUM STATES; RESOLUTION; SCATTERING; SURFACES; VALVES; WORK FUNCTIONS