Enhanced Isochoric Heating from Fast Electrons Produced by High-Contrast, Relativistic-Intensity Laser Pulses
Enhanced Isochoric Heating from Fast Electrons Produced by High-Contrast, Relativistic-Intensity Laser Pulses
Perez, F.; Gremillet, L.; Koenig, M.; Baton, S. D.; Audebert, P.; Chahid, M.; Rousseaux, C.; Drouin, M.; Lefebvre, E.; Vinci, T.; Rassuchine, J.; Cowan, T.; Gaillard, S. A.; Flippo, K. A.; Shepherd, R.
Abstract
Thin, mass-limited targets composed of V/Cu/Al layers with diameters ranging from 50 to 300 μm have been isochorically heated by a 300 fs laser pulse delivering up to 10 J at 2×1019 W/cm2 irradiance. Detailed spectral analysis of the Cu x-ray emission indicates that the highest temperatures, of the order of 100 eV, have been reached when irradiating the smallest targets with a high-contrast, frequency-doubled pulse despite a reduced laser energy. Collisional particle-in-cell simulations confirm the detrimental influence of the preformed plasma on the bulk target heating.
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Physical Review Letters 104(2010), 085001
DOI: 10.1103/PhysRevLett.104.085001
Cited 51 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-13844