Single-Shot Electron Diffraction using a Cold Atom Electron Source
Abstract
Cold atom electron sources are a promising alternative to traditional photocathode sources for use in ultrafast electron diffraction due to greatly reduced electron temperature at creation, and the potential for a corresponding increase in brightness. Here we demonstrate single-shot, nanosecond electron diffraction from monocrystalline gold using cold electron bunches generated in a cold atom electron source. The diffraction patterns have sufficient signal to allow registration of multiple single-shot images, generating an averaged image with significantly higher signal-to-noise ratio than obtained with unregistered averaging. Reflection high-energy electron diffraction (RHEED) was also demonstrated, showing that cold atom electron sources may be useful in resolving nanosecond dynamics of nanometre scale near-surface structures.
Cite
@article{arxiv.1506.07442,
title = {Single-Shot Electron Diffraction using a Cold Atom Electron Source},
author = {Rory W. Speirs and Corey T. Putkunz and Andrew J. McCulloch and Keith A. Nugent and Benjamin M. Sparkes and Robert E. Scholten},
journal= {arXiv preprint arXiv:1506.07442},
year = {2015}
}
Comments
This is an author-created, un-copyedited version of an article published in Journal of Physics B: Atomic, Molecular and Optical Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0953-4075/48/21/214002