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Title: Control of laser-wakefield acceleration by the plasma-density profile

Abstract

We show that both the maximum energy gain and the accelerated beam quality can be efficiently controlled by the plasma-density profile. Choosing a proper density gradient one can uplift the dephasing limitation and keep the phase synchronism between the bunch of relativistic particles and the plasma wave over extended distances. Putting electrons into the nth wake period behind the driving laser pulse, the maximum energy gain is increased by the factor, which is proportional to n, over that in the case of uniform plasma. Layered plasma is suggested to keep the resonant condition for laser-wakefield excitation. The acceleration is limited then by laser depletion rather than by dephasing. Further, we show that the natural energy spread of the particle bunch acquired at the acceleration stage can be effectively removed by a matched deceleration stage, where a larger plasma density is used.

Authors:
;  [1]
  1. Institut fur Theoretische Physik I, Heinrich-Heine-Universitat Duesseldorf, 40225 Duesseldorf (Germany)
Publication Date:
OSTI Identifier:
21101942
Resource Type:
Journal Article
Journal Name:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)
Additional Journal Information:
Journal Volume: 77; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevE.77.025401; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1539-3755
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; CONTROL THEORY; DENSITY; ELECTRONS; EXCITATION; LASERS; LIGHT TRANSMISSION; PLASMA DENSITY; PLASMA GUNS; PLASMA WAVES; PULSES; RELATIVISTIC PLASMA; RELATIVISTIC RANGE; WAKEFIELD ACCELERATORS

Citation Formats

Pukhov, A, Kostyukov, I, and Institute of Applied Physics, Russian Academy of Science, 46 Uljanov Street, 603950 Nizhny Novgorod. Control of laser-wakefield acceleration by the plasma-density profile. United States: N. p., 2008. Web. doi:10.1103/PHYSREVE.77.025401.
Pukhov, A, Kostyukov, I, & Institute of Applied Physics, Russian Academy of Science, 46 Uljanov Street, 603950 Nizhny Novgorod. Control of laser-wakefield acceleration by the plasma-density profile. United States. https://doi.org/10.1103/PHYSREVE.77.025401
Pukhov, A, Kostyukov, I, and Institute of Applied Physics, Russian Academy of Science, 46 Uljanov Street, 603950 Nizhny Novgorod. 2008. "Control of laser-wakefield acceleration by the plasma-density profile". United States. https://doi.org/10.1103/PHYSREVE.77.025401.
@article{osti_21101942,
title = {Control of laser-wakefield acceleration by the plasma-density profile},
author = {Pukhov, A and Kostyukov, I and Institute of Applied Physics, Russian Academy of Science, 46 Uljanov Street, 603950 Nizhny Novgorod},
abstractNote = {We show that both the maximum energy gain and the accelerated beam quality can be efficiently controlled by the plasma-density profile. Choosing a proper density gradient one can uplift the dephasing limitation and keep the phase synchronism between the bunch of relativistic particles and the plasma wave over extended distances. Putting electrons into the nth wake period behind the driving laser pulse, the maximum energy gain is increased by the factor, which is proportional to n, over that in the case of uniform plasma. Layered plasma is suggested to keep the resonant condition for laser-wakefield excitation. The acceleration is limited then by laser depletion rather than by dephasing. Further, we show that the natural energy spread of the particle bunch acquired at the acceleration stage can be effectively removed by a matched deceleration stage, where a larger plasma density is used.},
doi = {10.1103/PHYSREVE.77.025401},
url = {https://www.osti.gov/biblio/21101942}, journal = {Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)},
issn = {1539-3755},
number = 2,
volume = 77,
place = {United States},
year = {Fri Feb 15 00:00:00 EST 2008},
month = {Fri Feb 15 00:00:00 EST 2008}
}