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Proceedings Paper

High energy density laser interactions with planetary and astrophysical materials: methodology and data
Author(s): John L. Remo; Richard G. Adams
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Paper Abstract

Sandia National Laboratories NLS (1064 nm) and Z-Beamlet (527 nm) pulsed lasers @ ~ 100 GW/cm2 and 10 TW/cm2 were used to attain pressures at 20 - 525 GPa on a variety of metallic and mineral targets. A simple, inexpensive and innovative electro-optical real-time methodology monitored rear surface mechanical deformation and associated particle and shock wave velocities that differ considerably between metals and non-metals. A reference calibration metal (Aluminum) and a reference non-metal (graphite) were used to demonstrate the validity of this methodology. Normative equations of state and momentum coupling coefficients were obtained for dunite, carbonaceous meteorites, graphite, iron and nickel. These experimental results on inhomogeneous materials can be applied to a variety of high energy density interactions involving stellar and planetary material formation, dynamic interactions, geophysical models, space propulsion systems, orbital debris, materials processing, near-earth space (lunar and asteroid) resource recovery, and near-earth object mitigation models.

Paper Details

Date Published: 13 May 2008
PDF: 11 pages
Proc. SPIE 7005, High-Power Laser Ablation VII, 70052M (13 May 2008); doi: 10.1117/12.782492
Show Author Affiliations
John L. Remo, Harvard Univ. (United States)
Harvard Smithsonian Ctr. for Astrophysics (United States)
Sandia National Labs. (United States)
Richard G. Adams, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 7005:
High-Power Laser Ablation VII
Claude R. Phipps, Editor(s)

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