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

Mangles, Stuart P. D. and Thomas, Alexander George Roy and Lundh, Olle and Lindau, Filip and Kaluza, M. C. and Persson, A. and Wahlstrom, C.-G. and Krushelnick, Karl and Najmudin, Zulfikar (2007) On the stability of laser wakefield electron accelerators in the monoenergetic regime. Physics of Plasmas, 14 (5). ISSN 1070-664X

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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 (a0≳3)(a0≳3) required for the occurrence of self-injection after accounting for pulse compression.

Item Type:
Journal Article
Journal or Publication Title:
Physics of Plasmas
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
85819
Deposited By:
Deposited On:
04 Apr 2017 13:08
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Jul 2020 03:31