Preheat Measurements for Supernova Hydrodynamics Experiments

Details Preheat Measurements for Supernova Hydrodynamics Experiments Preheat Measurements for Supernova Hydrodynamics Experiments

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aps..dpppp8066k&link_type=abstract

American Physical Society, 49th Annual Meeting of the Division of Plasma Physics, November 12-16, 2007, abstract #PP8.066

Physics

Plasma Physics

Scientific paper

The use of multi-kilojoule, ns lasers to launch shock waves has become a standard method for initiating hydrodynamic experiments in the field of Laboratory Astrophysics. However, the intense laser ablation that creates moving plasma also leads to the production of unwanted energetic x-rays and suprathermal electrons, both of which can be sources of material preheating. In principle, this preheat can alter the conditions of the experimental setup prior to the desired experiment actually taking place. At the University of Michigan, ongoing Rayleigh-Taylor instability experiments are defined by precise initial conditions, and potential deformation due to preheat could greatly affect their accuracy. An experiment devised and executed in an attempt to assess the preheat in this specific case will be presented, along with the quantitative analysis of the data obtained.

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