Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 163-166 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 829 |
| Early online date | 19 Feb 2016 |
| DOIs | |
| Publication status | Published - 1 Sep 2016 |
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Keywords
- laser-driven ion acceleration
- plasma jet
- intense laser-plasma interaction
- relativistic induced transparency
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Ion acceleration and plasma jet formation in ultra-thin foils undergoing expansion and relativistic transparency. / King, M.; Gray, R.J.; Powell, H.W.; Maclellan, D.A.; Izquierdo, Bruno; Stockhausen, L.C.; Hicks, G.S.; Dover, N.P.; Rusby, D.R.; Carroll, D.C.; Padda, H.; Torres, R.; Kar, S.; Clarke, R.J.; Musgrave, I.O.; Najmudin, Z.; Borghesi, M.; Neely, D.; Mckenna, P.
In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 829, 01.09.2016, p. 163-166.Research output: Contribution to journal › Special issue
TY - JOUR
T1 - Ion acceleration and plasma jet formation in ultra-thin foils undergoing expansion and relativistic transparency
AU - King, M.
AU - Gray, R.J.
AU - Powell, H.W.
AU - Maclellan, D.A.
AU - Izquierdo, Bruno
AU - Stockhausen, L.C.
AU - Hicks, G.S.
AU - Dover, N.P.
AU - Rusby, D.R.
AU - Carroll, D.C.
AU - Padda, H.
AU - Torres, R.
AU - Kar, S.
AU - Clarke, R.J.
AU - Musgrave, I.O.
AU - Najmudin, Z.
AU - Borghesi, M.
AU - Neely, D.
AU - Mckenna, P.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - At sufficiently high laser intensities, the rapid heating to relativistic velocities and resulting decompression of plasma electrons in an ultra-thin target foil can result in the target becoming relativistically transparent to the laser light during the interaction. Ion acceleration in this regime is strongly affected by the transition from an opaque to a relativistically transparent plasma. By spatially resolving the laser-accelerated proton beam at near-normal laser incidence and at an incidence angle of 30°, we identify characteristic features both experimentally and in particle-in-cell simulations which are consistent with the onset of three distinct ion acceleration mechanisms: sheath acceleration; radiation pressure acceleration; and transparency-enhanced acceleration. The latter mechanism occurs late in the interaction and is mediated by the formation of a plasma jet extending into the expanding ion population. The effect of laser incident angle on the plasma jet is explored.
AB - At sufficiently high laser intensities, the rapid heating to relativistic velocities and resulting decompression of plasma electrons in an ultra-thin target foil can result in the target becoming relativistically transparent to the laser light during the interaction. Ion acceleration in this regime is strongly affected by the transition from an opaque to a relativistically transparent plasma. By spatially resolving the laser-accelerated proton beam at near-normal laser incidence and at an incidence angle of 30°, we identify characteristic features both experimentally and in particle-in-cell simulations which are consistent with the onset of three distinct ion acceleration mechanisms: sheath acceleration; radiation pressure acceleration; and transparency-enhanced acceleration. The latter mechanism occurs late in the interaction and is mediated by the formation of a plasma jet extending into the expanding ion population. The effect of laser incident angle on the plasma jet is explored.
KW - laser-driven ion acceleration
KW - plasma jet
KW - intense laser-plasma interaction
KW - relativistic induced transparency
UR - http://www.sciencedirect.com/science/journal/01689002
U2 - 10.1016/j.nima.2016.02.032
DO - 10.1016/j.nima.2016.02.032
M3 - Special issue
VL - 829
SP - 163
EP - 166
JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
ER -