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Plasma-wakefield acceleration of a positron beam

Journal Article · · Physical Review E
Plasma-wakefield excitation by positron beams is examined in a regime for which the plasma dynamics are highly nonlinear. Three dimensional particle-in-cell simulations and physical models are presented. In the nonlinear wake regime known as the blowout regime for electrons, positron wakes exhibit an analogous ''suck-in'' behavior. Although analogous, the two wakefield cases are quite different in terms of their amplitudes, wavelengths, waveforms, transverse profiles, and plasma density dependence. In a homogenous plasma, nonlinear positron wakes are smaller than those of the corresponding electron case. However, hollow channels are shown to enhance the amplitude of the positron wakes.
Research Organization:
University of California
Sponsoring Organization:
(US)
DOE Contract Number:
FG03-92ER40727; FG03-92ER40745; FG03-98DP00211
OSTI ID:
40277192
Journal Information:
Physical Review E, Journal Name: Physical Review E Journal Issue: 4 Vol. 64; ISSN 1063-651X
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English

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