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Title: Velocity map photoelectron-photoion coincidence imaging on a single detector

Here we report on a new simplified setup for velocity map photoelectron-photoion coincidence imaging using only a single particle detector. We show that both photoelectrons and photoions can be extracted toward the same micro-channel-plate delay line detector by fast switching of the high voltages on the ion optics. This single detector setup retains essentially all the features of a standard two-detector coincidence imaging setup, viz., the high spatial resolution for electron and ion imaging, while only slightly decreasing the ion time-of-flight mass resolution. The new setup paves the way to a significant cost reduction in building a coincidence imaging setup for experiments aiming to obtain the complete correlated three-dimensional momentum distribution of electrons and ions.
Authors:
; ;  [1]
  1. LaserLaB Amsterdam, VU University Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam (Netherlands)
Publication Date:
OSTI Identifier:
22093724
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 83; Journal Issue: 9; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRON DETECTION; ELECTRONS; IONS; MASS RESOLUTION; MASS SPECTROSCOPY; MICROCHANNEL ELECTRON MULTIPLIERS; PARTICLE BEAMS; PHOTOEMISSION; POSITION SENSITIVE DETECTORS; SPATIAL RESOLUTION; THREE-DIMENSIONAL CALCULATIONS; TIME-OF-FLIGHT METHOD; VELOCITY