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Abstract
Target normal measurements of proton energy spectra from ultrathin (50-200 nm) planar foil targets irradiated by 10(19) W cm(-2) 40 fs laser pulses exhibit broad maxima that are not present in the energy spectra from micron thickness targets (6 mu m). The proton flux in the peak is considerably greater than the proton flux observed in the same energy range in thicker targets. Numerical modelling of the experiment indicates that this spectral modification in thin targets is caused by magnetic fields that grow at the rear of the target during the laser-target interaction.
Original language | English |
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Article number | 83018 |
Number of pages | 15 |
Journal | New Journal of Physics |
Volume | 11 |
DOIs | |
Publication status | Published - 13 Aug 2009 |
Keywords
- plasma interactions
- solid interactions
- relativistic ions
- driven
- transport
- foils
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Dive into the research topics of 'Spectral modification of laser-accelerated proton beams by self-generated magnetic fields'. Together they form a unique fingerprint.Projects
- 1 Finished
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KEY PHYSICS FOR INERTIAL CONFINEMENT DIAGNOSED BY ION EMISSION
McKenna, P. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/10/07 → 30/09/11
Project: Research