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.
| Language | English |
|---|---|
| Article number | 015027 |
| Number of pages | 13 |
| Journal | New Journal of Physics |
| Volume | 15 |
| DOIs | |
| Publication status | Published - 31 Jan 2013 |
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Keywords
- laser plasma acceleration
- filamentation in plasmas
- plastic targets
- x-ray pinhole imaging
- planar geometry
- particle-in-cell simulations
- uniform irradiation
Cite this
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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 journal › Article
TY - JOUR
T1 - The effect of phase front deformation on the growth of the filamentation instability in laser–plasma interactions
AU - Higson, E.
AU - Trines, R.
AU - Jiang, J.
AU - Bingham, R.
AU - Lancaster, K. L.
AU - Davies, J. R.
AU - Norreys, P. A.
PY - 2013/1/31
Y1 - 2013/1/31
N2 - 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.
AB - 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.
KW - laser plasma acceleration
KW - filamentation in plasmas
KW - plastic targets
KW - x-ray pinhole imaging
KW - planar geometry
KW - particle-in-cell simulations
KW - uniform irradiation
UR - http://www.scopus.com/inward/record.url?scp=84873316414&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/15/1/015027
DO - 10.1088/1367-2630/15/1/015027
M3 - Article
VL - 15
JO - New Journal of Physics
T2 - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
M1 - 015027
ER -