The Scaling of Z-pinch Temperature and Density Gradients with Load Current

Details The Scaling of Z-pinch Temperature and Density Gradients with Load Current The Scaling of Z-pinch Temperature and Density Gradients with Load Current

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..dppptp406w&link_type=abstract

American Physical Society, Division of Plasma Physics Meeting, November 17-21, 1997, abstract #pThpP406.

Physics

Plasma Physics

Scientific paper

It was found, in the analysis of a 90-wire Al shot on the Saturn generator at Sandia National Laboratories, that strong gradients in temperature and density were generated in the on-axis z-pinch and that these gradients resulted in less than 20% mass participation in the K-shell emission(K. G. Whitney, et. al., ``Analyzing Time-resolved Spectroscopic Data from an Azimuthally Symmetric, Aluminum-wire Array, Z-pinch Implosion'', Phys. Rev. E, to be published.). Similar large wire number Al experiments have now been conducted on the PBFA-Z generator at Sandia. These experiments allow investigation of how the gradients seen in the 90-wire Saturn experiment scale with the current driving the load. We investigate this scaling using 1-D MHD simulations of the PBFA-Z experiments, similar to ones used to analyze the 90-wire Saturn experiment. Comparisons of predicted K-shell output in the presence of these gradients are compared to experimentally observed outputs from the PBFA-Z shots.

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