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Feasibility of CoreCollapse Supernova Experiments at the National Ignition Facility. Timothy Handy. Euler Equations. H yperbolic system of conservation laws Requires an additional closure relation. de Laval Nozzle – A Basic Example. Assumptions: Ideal Gas
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Feasibility of CoreCollapse Supernova Experiments at the National Ignition Facility
Timothy Handy
Gravity
Gravity + Heating
Iron core grows
Mass is added from silicon burning
TOO BIG!
Bigger
Big
Okay
Gravity > Degeneracy Pressure
Electrons and Protons combine to form Neutrons and Neutrinos
+
+
=
+

Sudden loss of pressure at the core
to move through the
shock
The above are essential nozzle components
Highlight difference with SN
Settling
Cooling by Neutrinos
Gravity
Convection
Heating by Neutrinos
The problem can now be reformulated as the composite of two problems
Shock Stability Problem
Settling Flow Problem
Here our focus is on the first problem and initially without Heating