Velocity map photoelectron-photoion coincidence imaging on a single detector

Journal Article · Sat Sep 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4749843· OSTI ID:22093724

Lehmann, C. Stefan; Ram, N. Bhargava; Janssen, Maurice H. M. ^[1]

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1. LaserLaB Amsterdam, VU University Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam (Netherlands)

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.

• OSTI ID: 22093724
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 9; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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