High pressure generation by hot electrons driven ablation

Journal Article · Fri Nov 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4833680· OSTI ID:22218433

Piriz, A. R. ^[1]; Piriz, S. A. ^[2]; Tahir, N. A. ^[3]

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1. E.T.S.I. Industriales, CYTEMA, and Instituto de Investigaciones Energéticas, Universidad de Castilla-La Mancha, 13071 Ciudad Real (Spain)
2. Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040 Madrid (Spain)
3. GSI Helmholtzzentrum für Schwerionenforschung, Planckstrasse 1, 64291 Darmstadt (Germany)

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 θ{sub H} would be independent of the laser intensity I, on the resulting ablation pressure is considered. In comparison with the case when the scaling law θ{sub H}∼(Iλ{sup 2}){sup 1/3} is assumed, the generation of the high pressures needed for driving the ignitor shock may be more demanding. Intensities above 10{sup 17} W/cm{sup 2} would be required for θ{sub H}=25−30 keV.

• OSTI ID: 22218433
• Journal Information: Physics of Plasmas, Vol. 20, Issue 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
36 MATERIALS SCIENCE
07 ISOTOPES AND RADIATION SOURCES
ABLATION
BEAM-PLASMA SYSTEMS
COMPARATIVE EVALUATIONS
ELECTRON TEMPERATURE
ELECTRONS
ION TEMPERATURE
KEV RANGE
LASER RADIATION
LASERS
LIGHT TRANSMISSION
PLASMA
PLASMA PRESSURE
SCALING LAWS
THERMONUCLEAR IGNITION