Abstract
The interaction of a theta-pinch plasma with cold-material end plugs is investigated with a numerical hydrodynamic and heat flow model. A very appreciable improvement in energy confinement is obtained for the 5-m system considered compared to the same system plugs. The improvement is due to the elimination of convective energy loss, a reduction of thermal conductive loss when Z > 1 end plugs are used, and some recompression of the plasma by ablated plug material.
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