High energy density laser interactions with planetary and astrophysical materials: methodology and data

John L. Remo; Richard G. Adams

doi:10.1117/12.782492

13 May 2008 High energy density laser interactions with planetary and astrophysical materials: methodology and data

John L. Remo, Richard G. Adams

Proceedings Volume 7005, High-Power Laser Ablation VII; 70052M (2008) https://doi.org/10.1117/12.782492
Event: High-Power Laser Ablation 2008, 2008, Taos, New Mexico, United States

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.

Citation Download Citation

John L. Remo and Richard G. Adams "High energy density laser interactions with planetary and astrophysical materials: methodology and data", Proc. SPIE 7005, High-Power Laser Ablation VII, 70052M (13 May 2008); https://doi.org/10.1117/12.782492

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