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Title: Fluid simulation of relativistic electron beam driven wakefield in a cold plasma

Abstract

Excitation of wakefield in a cold homogeneous plasma, driven by an ultra-relativistic electron beam is studied in one dimension using fluid simulation techniques. For a homogeneous rigid beam having density (n{sub b}) less than or equal to half the plasma density (n{sub 0}), simulation results are found to be in good agreement with the analytical work of Rosenzweig [Phys. Rev. Lett. 58, 555 (1987)]. Here, Rosenzweig's work has been analytically extended to regimes where the ratio of beam density to plasma density is greater than half and results have been verified using simulation. Further in contrast to Rosenzweig's work, if the beam is allowed to evolve in a self-consistent manner, several interesting features are observed in simulation viz. splitting of the beam into beam-lets (for l{sub b} > λ{sub p}) and compression of the beam (for l{sub b} < λ{sub p}), l{sub b} and λ{sub p}, respectively, being the initial beam length and plasma wavelength.

Authors:
; ;  [1]
  1. Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)
Publication Date:
OSTI Identifier:
22490984
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COLD PLASMA; COMPUTERIZED SIMULATION; ELECTRON BEAMS; EXCITATION; FLOW MODELS; HOMOGENEOUS PLASMA; LASER RADIATION; PLASMA DENSITY; RELATIVISTIC RANGE; WAKEFIELD ACCELERATORS

Citation Formats

Bera, Ratan Kumar, Sengupta, Sudip, and Das, Amita. Fluid simulation of relativistic electron beam driven wakefield in a cold plasma. United States: N. p., 2015. Web. doi:10.1063/1.4926816.
Bera, Ratan Kumar, Sengupta, Sudip, & Das, Amita. Fluid simulation of relativistic electron beam driven wakefield in a cold plasma. United States. https://doi.org/10.1063/1.4926816
Bera, Ratan Kumar, Sengupta, Sudip, and Das, Amita. 2015. "Fluid simulation of relativistic electron beam driven wakefield in a cold plasma". United States. https://doi.org/10.1063/1.4926816.
@article{osti_22490984,
title = {Fluid simulation of relativistic electron beam driven wakefield in a cold plasma},
author = {Bera, Ratan Kumar and Sengupta, Sudip and Das, Amita},
abstractNote = {Excitation of wakefield in a cold homogeneous plasma, driven by an ultra-relativistic electron beam is studied in one dimension using fluid simulation techniques. For a homogeneous rigid beam having density (n{sub b}) less than or equal to half the plasma density (n{sub 0}), simulation results are found to be in good agreement with the analytical work of Rosenzweig [Phys. Rev. Lett. 58, 555 (1987)]. Here, Rosenzweig's work has been analytically extended to regimes where the ratio of beam density to plasma density is greater than half and results have been verified using simulation. Further in contrast to Rosenzweig's work, if the beam is allowed to evolve in a self-consistent manner, several interesting features are observed in simulation viz. splitting of the beam into beam-lets (for l{sub b} > λ{sub p}) and compression of the beam (for l{sub b} < λ{sub p}), l{sub b} and λ{sub p}, respectively, being the initial beam length and plasma wavelength.},
doi = {10.1063/1.4926816},
url = {https://www.osti.gov/biblio/22490984}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 7,
volume = 22,
place = {United States},
year = {Wed Jul 15 00:00:00 EDT 2015},
month = {Wed Jul 15 00:00:00 EDT 2015}
}