High pressure generation by hot electrons driven ablation
A previous model [Piriz et al. Phys. Plasmas 19, 122705 (2012)] for the ablation driven by the hot electrons generated in collisionless laser-plasma interactions in the framework of shock ignition is revisited. The impact of recent results indicating that for a laser wavelength λ = 0.35 μm the hot e...
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Veröffentlicht in: | Physics of plasmas 2013-11, Vol.20 (11) |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A previous model [Piriz et al. Phys. Plasmas 19, 122705 (2012)] for the ablation driven by the hot electrons generated in collisionless laser-plasma interactions in the framework of shock ignition is revisited. The impact of recent results indicating that for a laser wavelength λ = 0.35 μm the hot electron temperature θH would be independent of the laser intensity I, on the resulting ablation pressure is considered. In comparison with the case when the scaling law θH∼(Iλ2)1/3 is assumed, the generation of the high pressures needed for driving the ignitor shock may be more demanding. Intensities above 1017 W/cm2 would be required for θH=25−30 keV. |
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ISSN: | 1070-664X 1089-7674 |
DOI: | 10.1063/1.4833680 |