Coincidence velocity map imaging using a single detector

Arthur Zhao; Péter Sándor; Thomas Weinacht

doi:10.1063/1.4981917

Coincidence velocity map imaging using a single detector

J Chem Phys. 2017 Jul 7;147(1):013922. doi: 10.1063/1.4981917.

Authors

Arthur Zhao¹, Péter Sándor², Thomas Weinacht¹

Affiliations

¹ Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA.
² Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA.

PMID: 28688443
DOI: 10.1063/1.4981917

Abstract

We demonstrate a single-detector velocity map imaging setup which is capable of rapidly switching between coincidence and non-coincidence measurements. By rapidly switching the extraction voltages on the electrostatic lenses, both electrons and ions can be collected in coincidence with a single detector. Using a fast camera as the 2D detector avoids the saturation problem associated with traditional delay line detectors and allows for easy transitions between coincidence and non-coincidence data collection modes. This is a major advantage in setting up a low-cost and versatile coincidence apparatus. We present both coincidence and non-coincidence measurements of strong field atomic and molecular ionization.