Phase space tomography of beams with extreme space charge

2007 ◽  
Author(s):  
D. Stratakis ◽  
R. A. Kishek ◽  
I. Haber ◽  
M. Walter ◽  
R. B. Fiorito ◽  
...  
Keyword(s):  
Phase Space ◽  
Space Charge

Phase Space Tomography: A Simple, Portable and Accurate Technique to Map Phase Spaces of Beams with Space Charge

2006 ◽  
Author(s):  
D. Stratakis ◽  
R. A. Kishek ◽  
H. Li ◽  
S. Bernal ◽  
M. Walter ◽  
...  
Keyword(s):  
Phase Space ◽  
Space Charge

Experimental verification of tomographic phase-space imaging for beams with space-charge using a pinhole-scan

2010 ◽  
Vol 107 (10) ◽  
pp. 104905 ◽  
Author(s):  
D. Stratakis ◽  
R. A. Kishek ◽  
I. Haber ◽  
R. B. Fiorito ◽  
M. Reiser ◽  
...  
Keyword(s):  
Phase Space ◽  
Space Charge ◽  
Experimental Verification ◽  
Pinhole Scan

scholarly journals Benchmarking of 3D space charge codes using direct phase space measurements from photoemission high voltage dc gun

2008 ◽  
Vol 11 (10) ◽  
Author(s):  
Ivan V. Bazarov ◽  
Bruce M. Dunham ◽  
Colwyn Gulliford ◽  
Yulin Li ◽  
Xianghong Liu ◽  
...  
Keyword(s):  
Phase Space ◽  
Space Charge ◽  
High Voltage ◽  
3D Space

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

Electron holography of interfaces in electroceramics

1993 ◽  
Vol 51 ◽  
pp. 1088-1089
Author(s):  
Vinayak P. Dravid ◽  
V. Ravikumar ◽  
Richard Plass
Keyword(s):  
Space Charge ◽  
Direct Evidence ◽  
Materials Science ◽  
Theoretical Work ◽  
Electron Holography ◽  
Resolution Limit ◽  
Interference Phenomenon ◽  
X Ray ◽  
Electron Sources ◽  
Science Community

With the advent of coherent electron sources with cold field emission guns (cFEGs), it has become possible to utilize the coherent interference phenomenon and perform “practical” electron holography. Historically, holography was envisioned to extent the resolution limit by compensating coherent aberrations. Indeed such work has been done with reasonable success in a few laboratories around the world. However, it is the ability of electron holography to map electrical and magnetic fields which has caught considerable attention of materials science community.There has been considerable theoretical work on formation of space charge on surfaces and internal interfaces. In particular, formation and nature of space charge have important implications for the performance of numerous electroceramics which derive their useful properties from electrically active grain boundaries. Bonnell and coworkers, in their elegant STM experiments provided the direct evidence for GB space charge and its sign, while Chiang et al. used the indirect but powerful technique of x-ray microchemical profiling across GBs to infer the nature of space charge.

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