Energy Deposition onto an Asteroid or Comet Nucleus from a Nuclear Burst

Details Energy Deposition onto an Asteroid or Comet Nucleus from a Nuclear Burst Energy Deposition onto an Asteroid or Comet Nucleus from a Nuclear Burst

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p13a1360p&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P13A-1360

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Computation

[0545] Computational Geophysics / Modeling, [3238] Mathematical Geophysics / Prediction, [6000] Planetary Sciences: Comets And Small Bodies, [6205] Planetary Sciences: Solar System Objects / Asteroids

Scientific paper

There is substantial controversy about the potential use and efficacy of a nuclear burst for the prevention of an impact of an asteroid or cometary nucleus on the Earth. Previous papers (e.g. Holsapple 2004) have called for a more careful analysis of the physics of this process, specifically energy deposition and internal shock processes. We begin to explore this question quantitatively by modeling the deposition of energy onto materials relevant to cosmic objects from a simulated nuclear burst. We use Los Alamos National Laboratory (LANL) particle transport codes and cross-section libraries to explore the deposition of neutrons and gamma rays onto various targets. We also use LANL radiation hydrocodes, tabular equations of state and opacities to study the deposition of x-ray energy within the material. We will report the amount and spatial distribution of energy deposition and the effects of burst height, target material variation, and mesh resolution on the simulation results.

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