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Title: On the stability of laser wakefield electron accelerators in the monoenergetic regime

Abstract

The effects of plasma density and laser energy on the stability of laser produced monoenergetic electron beams are investigated. Fluctuations in the principal beam parameters, namely, electron energy, energy-spread, charge, and pointing, are demonstrated to be minimized at low densities. This improvement in stability is attributed to the reduced time for pulse evolution required before self-injection occurs; i.e., that the pulse is closest to the matched conditions for these densities. It is also observed that electrons are only consistently produced above a density-dependent energy threshold. These observations are consistent with there being a threshold intensity (a{sub 0} > or approx. 3) required for the occurrence of self-injection after accounting for pulse compression.

Authors:
; ; ; ; ; ; ; ;  [1];  [2];  [3];  [2];  [3]
  1. Blackett Laboratory, Imperial College, London SW7 2BZ (United Kingdom)
  2. (Sweden)
  3. (United Kingdom)
Publication Date:
OSTI Identifier:
20975081
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 5; Other Information: DOI: 10.1063/1.2436481; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ELECTRON BEAMS; ELECTRONS; FLUCTUATIONS; LASERS; PLASMA; PLASMA DENSITY; PLASMA GUNS; PULSES; STABILITY; WAKEFIELD ACCELERATORS

Citation Formats

Mangles, S. P. D., Thomas, A. G. R., Lundh, O., Lindau, F., Kaluza, M. C., Persson, A., Wahlstroem, C.-G., Krushelnick, K., Najmudin, Z., Department of Physics, Lund University, PO Box 118, S-22100 Lund, Blackett Laboratory, Imperial College, London SW7 2BZ, Department of Physics, Lund University, PO Box 118, S-22100 Lund, and Blackett Laboratory, Imperial College, London SW7 2BZ. On the stability of laser wakefield electron accelerators in the monoenergetic regime. United States: N. p., 2007. Web. doi:10.1063/1.2436481.
Mangles, S. P. D., Thomas, A. G. R., Lundh, O., Lindau, F., Kaluza, M. C., Persson, A., Wahlstroem, C.-G., Krushelnick, K., Najmudin, Z., Department of Physics, Lund University, PO Box 118, S-22100 Lund, Blackett Laboratory, Imperial College, London SW7 2BZ, Department of Physics, Lund University, PO Box 118, S-22100 Lund, & Blackett Laboratory, Imperial College, London SW7 2BZ. On the stability of laser wakefield electron accelerators in the monoenergetic regime. United States. doi:10.1063/1.2436481.
Mangles, S. P. D., Thomas, A. G. R., Lundh, O., Lindau, F., Kaluza, M. C., Persson, A., Wahlstroem, C.-G., Krushelnick, K., Najmudin, Z., Department of Physics, Lund University, PO Box 118, S-22100 Lund, Blackett Laboratory, Imperial College, London SW7 2BZ, Department of Physics, Lund University, PO Box 118, S-22100 Lund, and Blackett Laboratory, Imperial College, London SW7 2BZ. Tue . "On the stability of laser wakefield electron accelerators in the monoenergetic regime". United States. doi:10.1063/1.2436481.
@article{osti_20975081,
title = {On the stability of laser wakefield electron accelerators in the monoenergetic regime},
author = {Mangles, S. P. D. and Thomas, A. G. R. and Lundh, O. and Lindau, F. and Kaluza, M. C. and Persson, A. and Wahlstroem, C.-G. and Krushelnick, K. and Najmudin, Z. and Department of Physics, Lund University, PO Box 118, S-22100 Lund and Blackett Laboratory, Imperial College, London SW7 2BZ and Department of Physics, Lund University, PO Box 118, S-22100 Lund and Blackett Laboratory, Imperial College, London SW7 2BZ},
abstractNote = {The effects of plasma density and laser energy on the stability of laser produced monoenergetic electron beams are investigated. Fluctuations in the principal beam parameters, namely, electron energy, energy-spread, charge, and pointing, are demonstrated to be minimized at low densities. This improvement in stability is attributed to the reduced time for pulse evolution required before self-injection occurs; i.e., that the pulse is closest to the matched conditions for these densities. It is also observed that electrons are only consistently produced above a density-dependent energy threshold. These observations are consistent with there being a threshold intensity (a{sub 0} > or approx. 3) required for the occurrence of self-injection after accounting for pulse compression.},
doi = {10.1063/1.2436481},
journal = {Physics of Plasmas},
number = 5,
volume = 14,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}