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A graphene-based neutral particle detector

Journal article
Authors Jessica Warbinek
David Leimbach
Di Lu
K. Wendt
D. J. Pegg
A. Yurgens
Dag Hanstorp
Jakob Welander
Published in Applied Physics Letters
Volume 114
Issue 6
ISSN 0003-6951
Publication year 2019
Published at Department of Physics (GU)
Language en
Links dx.doi.org/10.1063/1.5080517
Keywords photodetachment, Physics
Subject categories Physical Sciences

Abstract

A neutral particle detector is presented, in which the traditionally used target material, indium tin oxide (ITO), is replaced by graphene. The graphene-based detector enables collinear photodetachment measurements at a significantly shorter wavelength of light down to 230nm compared to ITO-based detectors, which are limited at 335 nm. Moreover, the background signal from the photoelectric effect is drastically reduced when using graphene. The graphene based detector, reaching 1.7 eV further into the UV energy range, allows increased possibilities for photodetachment studies of negatively charged atoms, molecules, and clusters. Published under license by AIP Publishing.

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