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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/37277
Record Status
Checked
Record Id
37277
Title
Effect of laser-focusing conditions on propagation and monoenergetic electron production in laser-wakefield accelerators
Contributors
AGR Thomas
,
Z Najmudin
,
SPD Mangles
,
CD Murphy (CCLRC Rutherford Appleton Lab., and London Imperial Coll.)
,
AE Dangor
,
C Kamperidis
,
KL Lancaster (CCLRC Rutherford Appleton Lab.)
,
WB Mori
,
PA Norreys (CCLRC Rutherford Appleton Lab.)
,
W Rozmus
,
K Krushelnick
Abstract
The effect of laser-focusing conditions on the evolution of relativistic plasma waves in laser-wakefield accelerators is studied both experimentally and with particle-in-cell simulations. For short focal-length (w0<λp) interactions, beam breakup prevents stable propagation of the pulse. High field gradients lead to nonlocalized phase injection of electrons, and thus broad energy spread beams. However, for long focal-length geometries (w0>λp), a single optical filament can capture the majority of the laser energy and self-guide over distances comparable to the dephasing length, even for these short pulses (cτ≈λp). This allows the wakefield to evolve to the correct shape for the production of the monoenergetic electron bunches, as measured in the experiment
Organisation
CCLRC
,
CLF
,
CLF-HPL
,
CLF-ASTRA
,
CI
Keywords
beams
,
CLF 2006-2007
,
plasma
,
pulse duration
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Phys Rev B
98, no. 9 (2007): 095004.
doi:10.1103/PhysRevLett.98.095004
2007
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