Physics – Plasma Physics
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dpp.k6f08r&link_type=abstract
American Physical Society, Division of Plasma Physics Meeting, November 16-20, 1998 New Orleans, LA, abstract #K6F.08
Physics
Plasma Physics
Scientific paper
The velocity of meteorites can reach 100 km/sec and higher. There is currently no facility that can accelerate a sample in the solid state up to such speeds to experimentally simulate a high velocity meteorite impact. But for velocities larger than 10 km/sec. the kinetic energy density in a meteorite is much larger then the material evaporation energy, so the impact can be simulated by an impulsive, local energy release. The time of release must be smaller than the impact time and the energy must be released on a scale comparable with the meteorite size. The PetaWatt Laser at LLNL, which can deliver 500 J of energy in ~ 50 =B5m spot over few picoseconds, is an ideal facility for studying high speed meteorite impact physics. We will present preliminary results from experiments using the PetaWatt to create craters in thick planar Au targets, together with scaling estimates. We will discuss potential avenues for such experiments and the supporting modeling efforts.
Brown Campbell
Budil Kimberly S.
Estabrook Kent
Glendinning Gail S.
Gold D.
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