The effect of phase front deformation on the growth of the filamentation instability in laser–plasma interactions

E. Higson, R. Trines, J. Jiang, R. Bingham, K. L. Lancaster, J. R. Davies, P. A. Norreys

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Laser pulses of 0.9 kJ/1 ns/1053 nm were focused onto low-Z plastic targets in both spherical and planar geometry. The uniformity of the resulting plasma production was studied using x-ray pinhole imaging. Evidence is provided suggesting that thermal filamentation starts to occur for irradiances on the target of I lambda(2) >= 10(14) W cm(-2) mu m(2), even on deployment of phase plates to improve the focal spot spatial uniformity. The experiments are supported by both analytical modelling and two-dimensional particle-in-cell simulations. The implications for the applications of laser-plasma interactions that require high degrees of uniform irradiation are discussed.

LanguageEnglish
Article number015027
Number of pages13
JournalNew Journal of Physics
Volume15
DOIs
Publication statusPublished - 31 Jan 2013

Fingerprint

laser plasma interactions
pinholes
irradiance
plastics
irradiation
geometry
pulses
cells
lasers
x rays
simulation

Keywords

  • laser plasma acceleration
  • filamentation in plasmas
  • plastic targets
  • x-ray pinhole imaging
  • planar geometry
  • particle-in-cell simulations
  • uniform irradiation

Cite this

Higson, E. ; Trines, R. ; Jiang, J. ; Bingham, R. ; Lancaster, K. L. ; Davies, J. R. ; Norreys, P. A. / The effect of phase front deformation on the growth of the filamentation instability in laser–plasma interactions. In: New Journal of Physics. 2013 ; Vol. 15.
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The effect of phase front deformation on the growth of the filamentation instability in laser–plasma interactions. / Higson, E.; Trines, R.; Jiang, J.; Bingham, R.; Lancaster, K. L.; Davies, J. R.; Norreys, P. A.

In: New Journal of Physics, Vol. 15, 015027, 31.01.2013.

Research output: Contribution to journalArticle

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AU - Trines, R.

AU - Jiang, J.

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AU - Davies, J. R.

AU - Norreys, P. A.

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