Velocity-map imaging at low extraction fields

Horke, D.A.; Roberts, G.M.; Lecointre, J.; Verlet, J.R.R.

doi:10.1063/1.4724311

Velocity-map imaging at low extraction fields

Horke, D.A.; Roberts, G.M.; Lecointre, J.; Verlet, J.R.R.

Authors

D.A. Horke

G.M. Roberts

J. Lecointre

Professor Jan Verlet j.r.r.verlet@durham.ac.uk
Professor

Abstract

We present a velocity-map imaging (VMI) setup for photoelectron imaging that utilizes low electric extraction fields. This avoids any complications that could arise from electrostatic interactions between the extraction field and the molecular properties that are probed and has a minimal effect on the trajectory of ions in ion beam experiments. By using an attractive potential supplied to the detector, and keeping the electrodes at ground (zero) potential, we show that fringe fields between the VMI arrangement and the vacuum chamber can be eliminated, which is important in experiments on ions.

Citation

Horke, D., Roberts, G., Lecointre, J., & Verlet, J. (2012). Velocity-map imaging at low extraction fields. Review of Scientific Instruments, 83(6), https://doi.org/10.1063/1.4724311

Journal Article Type	Article
Publication Date	Jun 1, 2012
Deposit Date	Jan 28, 2016
Publicly Available Date	Feb 5, 2016
Journal	Review of Scientific Instruments
Print ISSN	0034-6748
Electronic ISSN	1089-7623
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	83
Issue	6
DOI	https://doi.org/10.1063/1.4724311

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Copyright Statement
© 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Horke, D. A. and Roberts, G. M. and Lecointre, J. and Verlet, J. R. R. (2012) 'Velocity-map imaging at low extraction fields.', Review of scientific instruments., 83 (6): 063101 and may be found at http://dx.doi.org/10.1063/1.4724311