Los Alamos Radiation Hydrocode Models of Asteroid Mitigation by an Internal Explosion

Details Los Alamos Radiation Hydrocode Models of Asteroid Mitigation by an Internal Explosion Los Alamos Radiation Hydrocode Models of Asteroid Mitigation by an Internal Explosion

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.1306w&link_type=abstract

American Astronomical Society, DPS meeting #42, #13.06; Bulletin of the American Astronomical Society, Vol. 42, p.1053

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Mitigation of a potentially hazardous object (PHO) by a conventional or nuclear subsurface burst is considered. This intervention methodology has been popularized in media presentations and is considered as one possible method of impact-hazard mitigation. We present RAGE radiation hydrocode models of the shock-generated disruption of PHOs by subsurface nuclear bursts and deflection from shallow buried bursts using scenario-specific models from authentic RADAR shape models. We will show 2D and 3D models for the disruption by a large energy source at the center and near the edge (mitigation) of such PHO models (1-10 Mton TNT equivalent), specifically for asteroid 25143 Itokawa. Parametric studies will be done on: the value of the source energy (from 1 Mton to 10 Mton), the parameters in the Steinberg-Guinan strength model used and the internal composition of the object from uniform composition to a "rubble pile” distribution. Specifically we are interested in assessing the optimum depth of burial and energy required to essentially disrupt and/or move the PHO and therefore mitigate the hazard. Recollection will be considered.

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