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

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.

scholarly journals A compact streak camera for 150 fs time resolved measurement of bright pulses in ultrafast electron diffraction

2010 ◽  
Vol 81 (10) ◽  
pp. 105103 ◽  
Author(s):  
G. H. Kassier ◽  
K. Haupt ◽  
N. Erasmus ◽  
E. G. Rohwer ◽  
H. M. von Bergmann ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Streak Camera ◽  
Ultrafast Electron Diffraction ◽  
Time Resolved

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

scholarly journals Quantum state tomography of molecules by ultrafast diffraction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ming Zhang ◽  
Shuqiao Zhang ◽  
Yanwei Xiong ◽  
Hankai Zhang ◽  
Anatoly A. Ischenko ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Quantum State ◽  
Degrees Of Freedom ◽  
Molecular Structures ◽  
Electron Diffraction Data ◽  
Ultrafast Electron Diffraction ◽  
Time Resolved ◽  
Quantum State Tomography ◽  
New Variant ◽  
State Tomography

AbstractUltrafast electron diffraction and time-resolved serial crystallography are the basis of the ongoing revolution in capturing at the atomic level of detail the structural dynamics of molecules. However, most experiments capture only the probability density of the nuclear wavepackets to determine the time-dependent molecular structures, while the full quantum state has not been accessed. Here, we introduce a framework for the preparation and ultrafast coherent diffraction from rotational wave packets of molecules, and we establish a new variant of quantum state tomography for ultrafast electron diffraction to characterize the molecular quantum states. The ability to reconstruct the density matrix, which encodes the amplitude and phase of the wavepacket, for molecules of arbitrary degrees of freedom, will enable the reconstruction of a quantum molecular movie from experimental x-ray or electron diffraction data.

scholarly journals Optical fiber-driven low-energy electron gun for time-resolved streak diffraction

2019 ◽  
Vol 205 ◽  
pp. 08016
Author(s):  
Chiwon Lee ◽  
H. Kassier Gunther ◽  
R. J. Dwayne Miller
Keyword(s):  
Electron Diffraction ◽  
Optical Fiber ◽  
Low Energy ◽  
Energy Electron ◽  
Electron Gun ◽  
Single Shot ◽  
Optical Fibres ◽  
Time Resolved ◽  
Low Energy Electron Diffraction ◽  
Low Energy Electron

The wave guiding feature of the optical fibre optical fibres is specifically exploited to construct a novel type of electron gun to realize single-shot low-energy electron diffraction experiments with the sub-picosecond resolution for studying irreversible samples.

Time-Resolved Visualization of Laser-Induced Heating of Gold with MeV Ultrafast Electron Diffraction

2014 ◽  
Vol 31 (11) ◽  
pp. 116101 ◽  
Author(s):  
Peng-Fei Zhu ◽  
Fei-Chao Fu ◽  
Sheng-Guang Liu ◽  
Dao Xiang ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Ultrafast Electron Diffraction ◽  
Time Resolved
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