High energy density interactions for near-earth orbit perturbations

John L. Remo; Peter X. Hammerling

doi:10.1117/12.547674

20 September 2004 High energy density interactions for near-earth orbit perturbations

John L. Remo, Peter X. Hammerling

Proceedings Volume 5448, High-Power Laser Ablation V; (2004) https://doi.org/10.1117/12.547674
Event: High-Power Laser Ablation, 2004, Taos, New Mexico, United States

Abstract

Energy requirements for near-Earth object (NEO) threat mitigation are addressed. Due to a large NEO mass range and the possibility of limited available time for orbit change, energy requirements can be large (~petajoules). To quantitatively determine energy requirements for a given momentum change use is made of the momentum coupling coefficient, C_M, that depends on the type of energy transfer, energy density, interaction time scale, and target material properties. Inhomogeneous and flawed NEO materials are empirically confronted through experimental methodologies that generate parameters on high energy density mechanical and radiative induced momentum coupling to (primarily) meteorite targets serving as near-Earth asteroid surrogates. Interactants include high speed (> 8 km/s) mechanical projectiles, high intensity (~ GW/cm²) infra-red laser radiation, and (~200 GW/cm²) soft X-ray radiation. Issues exists and are addressed regarding momentum coupling scaling from coupon sized (~mm²) to much larger (~m²) targets. Applications include high energy planetary and astrophysical momentum coupling dynamics.

Citation Download Citation

John L. Remo and Peter X. Hammerling "High energy density interactions for near-earth orbit perturbations", Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); https://doi.org/10.1117/12.547674

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