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 ◽  
...  
2021 ◽  
Vol 15 (2) ◽  
pp. 2170013
Author(s):  
Junho Shin ◽  
Hyun Woo Kim ◽  
In Hyung Baek ◽  
Sunjeong Park ◽  
Hyeon Sang Bark ◽  
...  

2020 ◽  
pp. 2000326
Author(s):  
Junho Shin ◽  
Hyun Woo Kim ◽  
In Hyung Baek ◽  
Sunjeong Park ◽  
Hyeon Sang Bark ◽  
...  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ming Zhang ◽  
Shuqiao Zhang ◽  
Yanwei Xiong ◽  
Hankai Zhang ◽  
Anatoly A. Ischenko ◽  
...  

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.


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

2010 ◽  
Vol 81 (3) ◽  
pp. 036110 ◽  
Author(s):  
Renkai Li ◽  
Wenhui Huang ◽  
Yingchao Du ◽  
Lixin Yan ◽  
Qiang Du ◽  
...  

2019 ◽  
Vol 205 ◽  
pp. 04009
Author(s):  
Timm Rohwer ◽  
Alfred Zong ◽  
Anshul Kogar ◽  
Ya-Qing Bie ◽  
Changmin Lee ◽  
...  

The combination of EUV based time-resolved Angle-Resolved-Photo-Electron-Spectroscopy (trARPES), Ultrafast-Electron-Diffraction (UED) and Transient-Optical-Spectroscopy (TOS) facilitates a comprehensive study and all-embracing analysis of correlated dynamics, exemplified on the system of Charge-Density-Waves (CDW’s) in rare earth tritellurides (RTe3).


Author(s):  
David C. Joy

Electron channeling patterns (ECP) were first found by Coates (1967) while observing a large bulk, single crystal of silicon in a scanning electron microscope. The geometric pattern visible was shown to be produced as a result of the changes in the angle of incidence, between the beam and the specimen surface normal, which occur when the sample is examined at low magnification (Booker, Shaw, Whelan and Hirsch 1967).A conventional electron diffraction pattern consists of an angularly resolved intensity distribution in space which may be directly viewed on a fluorescent screen or recorded on a photographic plate. An ECP, on the other hand, is produced as the result of changes in the signal collected by a suitable electron detector as the incidence angle is varied. If an integrating detector is used, or if the beam traverses the surface at a fixed angle, then no channeling contrast will be observed. The ECP is thus a time resolved electron diffraction effect. It can therefore be related to spatially resolved diffraction phenomena by an application of the concepts of reciprocity (Cowley 1969).


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