Ultrafast electron diffraction using an ultracold source

Structural Dynamics
M W van MourikO J Luiten

Abstract

The study of structural dynamics of complex macromolecular crystals using electrons requires bunches of sufficient coherence and charge. We present diffraction patterns from graphite, obtained with bunches from an ultracold electron source, based on femtosecond near-threshold photoionization of a laser-cooled atomic gas. By varying the photoionization wavelength, we change the effective source temperature from 300 K to 10 K, resulting in a concomitant change in the width of the diffraction peaks, which is consistent with independently measured source parameters. This constitutes a direct measurement of the beam coherence of this ultracold source and confirms its suitability for protein crystal diffraction.

References

Oct 26, 2005·Physical Review Letters·B J ClaessensO J Luiten
Jan 9, 2009·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Majed Chergui, Ahmed H Zewail
Jul 7, 2009·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·S B van der GeerO J Luiten
Sep 28, 2010·Physical Review Letters·C P HauriH H Braun
Nov 3, 2010·Proceedings of the National Academy of Sciences of the United States of America·M AidelsburgerP Baum
Feb 5, 2011·Nature·Henry N ChapmanJohn C H Spence
Apr 18, 2013·Nature Communications·A J McCullochR E Scholten
Apr 18, 2013·Nature Communications·W J EngelenO J Luiten

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Citations

Apr 12, 2017·Structural Dynamics·J G H FranssenO J Luiten
Sep 7, 2018·The Review of Scientific Instruments·Hyeri LeeIvan V Bazarov
Jan 30, 2018·Structural Dynamics·Rafael AbelaLuc Patthey
Nov 20, 2016·Physical Review Letters·D J ThompsonB M Sparkes

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Methods Mentioned

BETA
X-ray
electron diffraction
protein crystal diffraction

Software Mentioned

GPT
General Particle Tracer ( GPT ) code

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Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
S B van der GeerO J Luiten
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