Shock dynamics and neutron production in an explosive generator driven dense plasma focus

An explosive generator driven dense plasma focus is simulated numerically using a magnetohydrodynamic model which includes thermal conduction, resistive diffusion, and radiation in addition to the Lorentz force and shock hydrodynamics. It is shown that the dominant heating mechanism is shock heating...

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Bibliographic Details
Published in:Applied physics letters 1982-03, Vol.40 (6), p.462-465
Main Authors: Lindemuth, Irvin R., Freeman, Bruce L.
Format: Article
Language:English
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Summary:An explosive generator driven dense plasma focus is simulated numerically using a magnetohydrodynamic model which includes thermal conduction, resistive diffusion, and radiation in addition to the Lorentz force and shock hydrodynamics. It is shown that the dominant heating mechanism is shock heating. Neutron yield is shown to occur at the current minimum. The neutron yield is a result of the initial shock reflecting off the axis of symmetry, reflecting off the magnetic piston driving the focus, and reconverging on axis. Peak neutron production occurs when post-shock plasma converges on axis.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.93149