Enhancement and control of laser wakefields via a backward Raman amplifier
Abstract
The Backward Raman Amplifier (BRA) is proposed as a possible scheme for improving laser driven plasma wakefields. One- and two-dimensional particle-in-cell code simulations and a 3-Wave coupling model are presented and compared to demonstrate how the BRA can be applied to the laser wakefield accelerator (LWFA) in the non-relativistic regime to counteract limitations such as pump depletion and diffraction. This article provides a discussion on optimal parameters for the combination of BRA and LWFA and a prescription for a BRA pump frequency chirp to ensure coupling beyond the particle dephasing limit. Simulation results demonstrate a reduction or alleviation of the effects of diffraction and an increase in wake amplitude and sustainability and provide direct insights into new methods of controlling plasma wakes in LWFA and other applications.
- Authors:
-
- Univ. of Alberta, Edmonton, AB (Canada). Theoretical Physics Institute
- CEA, DAM, DIF, Arbajon (France)
- Univ. of Paris-Saclay (France). Centre de Physique Théorique, CNRS, Ecole Polytechnique
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1559913
- Alternate Identifier(s):
- OSTI ID: 1438281
- Report Number(s):
- LLNL-JRNL-745719
Journal ID: ISSN 1070-664X; 900179; TRN: US2000424
- Grant/Contract Number:
- AC52-07NA27344; LLNL-JRNL-745719
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 5; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Ludwig, J. D., Masson-Laborde, P. -E., Hüller, S., Rozmus, W., and Wilks, S. C. Enhancement and control of laser wakefields via a backward Raman amplifier. United States: N. p., 2018.
Web. doi:10.1063/1.5023387.
Ludwig, J. D., Masson-Laborde, P. -E., Hüller, S., Rozmus, W., & Wilks, S. C. Enhancement and control of laser wakefields via a backward Raman amplifier. United States. https://doi.org/10.1063/1.5023387
Ludwig, J. D., Masson-Laborde, P. -E., Hüller, S., Rozmus, W., and Wilks, S. C. Tue .
"Enhancement and control of laser wakefields via a backward Raman amplifier". United States. https://doi.org/10.1063/1.5023387. https://www.osti.gov/servlets/purl/1559913.
@article{osti_1559913,
title = {Enhancement and control of laser wakefields via a backward Raman amplifier},
author = {Ludwig, J. D. and Masson-Laborde, P. -E. and Hüller, S. and Rozmus, W. and Wilks, S. C.},
abstractNote = {The Backward Raman Amplifier (BRA) is proposed as a possible scheme for improving laser driven plasma wakefields. One- and two-dimensional particle-in-cell code simulations and a 3-Wave coupling model are presented and compared to demonstrate how the BRA can be applied to the laser wakefield accelerator (LWFA) in the non-relativistic regime to counteract limitations such as pump depletion and diffraction. This article provides a discussion on optimal parameters for the combination of BRA and LWFA and a prescription for a BRA pump frequency chirp to ensure coupling beyond the particle dephasing limit. Simulation results demonstrate a reduction or alleviation of the effects of diffraction and an increase in wake amplitude and sustainability and provide direct insights into new methods of controlling plasma wakes in LWFA and other applications.},
doi = {10.1063/1.5023387},
journal = {Physics of Plasmas},
number = 5,
volume = 25,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2018},
month = {Tue May 01 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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Figures / Tables found in this record: