scholarly journals Single-shot ultrafast electron diffraction with a laser-accelerated sub-MeV electron pulse

2009 ◽  
Vol 95 (11) ◽  
pp. 111911 ◽  
Author(s):  
Shigeki Tokita ◽  
Shunsuke Inoue ◽  
Shinichiro Masuno ◽  
Masaki Hashida ◽  
Shuji Sakabe
Keyword(s):  
Electron Diffraction ◽  
Single Shot ◽  
Electron Pulse ◽  
Ultrafast Electron Diffraction

Ultracold Electron Source for Single-Shot, Ultrafast Electron Diffraction

2009 ◽  
Vol 15 (4) ◽  
pp. 282-289 ◽  
Author(s):  
S.B. van der Geer ◽  
M.J. de Loos ◽  
E.J.D. Vredenbregt ◽  
O.J. Luiten
Keyword(s):  
Electron Diffraction ◽  
Relative Energy ◽  
Electron Source ◽  
Single Shot ◽  
Coulomb Interactions ◽  
Ultrafast Electron Diffraction ◽  
Acceleration Techniques ◽  
Transverse Emittance ◽  
Laser Photoemission ◽  
New Type

AbstractUltrafast electron diffraction (UED) enables studies of structural dynamics at atomic length and timescales, i.e., 0.1 nm and 0.1 ps, in single-shot mode. At present UED experiments are based on femtosecond laser photoemission from solid state cathodes. These photoemission sources perform excellently, but are not sufficiently bright for single-shot studies of, for example, biomolecular samples. We propose a new type of electron source, based on near-threshold photoionization of a laser-cooled and trapped atomic gas. The electron temperature of these sources can be as low as 10 K, implying an increase in brightness by orders of magnitude. We investigate a setup consisting of an ultracold electron source and standard radio-frequency acceleration techniques by GPT tracking simulations. The simulations use realistic fields and include all pairwise Coulomb interactions. We show that in this setup 120 keV, 0.1 pC electron bunches can be produced with a longitudinal emittance sufficiently small for enabling sub-100 fs bunch lengths at 1% relative energy spread. A transverse root-mean-square normalized emittance of εx = 10 nm is obtained, significantly better than from photoemission sources. Correlations in transverse phase-space indicate that the transverse emittance can be improved even further, enabling single-shot studies of biomolecular samples.

Femtosecond electron pulse compression by using the time focusing technique in ultrafast electron diffraction

2011 ◽  
Vol 20 (11) ◽  
pp. 114102 ◽  
Author(s):  
Wen-Long Wen ◽  
Xiao-Hong Lei ◽  
Xin Hu ◽  
Xiang-Yan Xu ◽  
Jun-Feng Wang ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Pulse Compression ◽  
Electron Pulse ◽  
Ultrafast Electron Diffraction

Note: Single-shot continuously time-resolved MeV ultrafast electron diffraction

2010 ◽  
Vol 81 (3) ◽  
pp. 036110 ◽  
Author(s):  
Renkai Li ◽  
Wenhui Huang ◽  
Yingchao Du ◽  
Lixin Yan ◽  
Qiang Du ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Single Shot ◽  
Ultrafast Electron Diffraction ◽  
Time Resolved

Extreme Beams for Single-shot Ultrafast Electron Diffraction

2008 ◽  
Vol 14 (S2) ◽  
pp. 494-495
Author(s):  
J Luiten ◽  
T Van Oudheusden ◽  
B Siwick ◽  
E De Jong ◽  
W Op 't Root ◽  
...  
Keyword(s):  
New Mexico ◽  
Electron Diffraction ◽  
Single Shot ◽  
Ultrafast Electron Diffraction

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008

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