diocotron instability
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2021 ◽  
Vol 11 (10) ◽  
pp. 4357
Author(s):  
Toby Nonnenmacher ◽  
Titus-Stefan Dascalu ◽  
Robert Bingham ◽  
Chung Lim Cheung ◽  
Hin-Tung Lau ◽  
...  

An electron plasma lens is a cost-effective, compact, strong-focusing element that can ensure efficient capture of low-energy proton and ion beams from laser-driven sources. A Gabor lens prototype was built for high electron density operation at Imperial College London. The parameters of the stable operation regime of the lens and its performance during a beam test with 1.4 MeV protons are reported here. Narrow pencil beams were imaged on a scintillator screen 67 cm downstream of the lens. The lens converted the pencil beams into rings that show position-dependent shape and intensity modulation that are dependent on the settings of the lens. Characterisation of the focusing effect suggests that the plasma column exhibited an off-axis rotation similar to the m=1 diocotron instability. The association of the instability with the cause of the rings was investigated using particle tracking simulations.


2018 ◽  
Vol 25 (1) ◽  
pp. 011607 ◽  
Author(s):  
Y. H. Jo ◽  
J. S. Kim ◽  
G. Stancari ◽  
M. Chung ◽  
H. J. Lee

2015 ◽  
Vol 22 (9) ◽  
pp. 092125 ◽  
Author(s):  
V. V. Mikhailenko ◽  
V. S. Mikhailenko ◽  
Younghyun Jo ◽  
Hae June Lee

2015 ◽  
Vol 66 (6) ◽  
pp. 935-940 ◽  
Author(s):  
Y. H. Jo ◽  
V. V. Mikhailenko ◽  
V. S. Mikhailenko ◽  
H. J. Lee

2014 ◽  
Vol 68 (9) ◽  
Author(s):  
Nicolas Crouseilles ◽  
Pierre Glanc ◽  
Sever A. Hirstoaga ◽  
Eric Madaule ◽  
Michel Mehrenberger ◽  
...  

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