Modeling Long Current-risetime Aluminum Experiments on the Saturn Generator

Details Modeling Long Current-risetime Aluminum Experiments on the Saturn Generator Modeling Long Current-risetime Aluminum Experiments on the Saturn Generator

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..dpprp1098w&link_type=abstract

American Physical Society, 43rd Annual Meeting of the APS Division of Plasma Physics October 29 - November 2, 2001 Long Beach, C

Physics

Plasma Physics

Scientific paper

The Saturn generator at Sandia National Laboratories operates in both a short current-risetime mode ( ~60 ns) and a long current-risetime mode ( ~160 ns). Aluminum wire array implosions in the long-risetime mode show dramatic increases in total radiated energies over those seen in the short risetime mode. This energy has been attributed to the generation and dissipation of magnetic flux-tube energy within the Z-pinch plasma(L. I. Rudakov, et. al., Phys. Rev. Lett., Vol. 84, 3326 (2000).). To investigate the applicability of this idea, three series of long-risetime aluminum experiments on Saturn are analyzed. In one series, the array radius was held fixed, and the array mass was varied; in another, radius and mass changes were made; in the third, the array length was varied while the mass and radius were held fixed. These implosions were modeled using a 1-D radiative-hydrodynamics code in which magnetic flux tube energy could generated and dissipated with an I^3 current dependence. Results will be presented comparing the x-ray data trends seen in both long- and short-risetime experiments with those seen in the modeling of these experiments.

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