Isentropic Compression on the 10-MA Saturn Pulsed Power Generator

Details Isentropic Compression on the 10-MA Saturn Pulsed Power Generator Isentropic Compression on the 10-MA Saturn Pulsed Power Generator

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..dppbp1068d&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

Over the past few years, a very useful technique has been developed at SNL to obtain accurate, equation-of-state data by means of isentropic loading via magnetic pressure.[1] This isentropic compression experimental (ICE) technique has been pioneered on the 20-MA Z generator[2], with each experiment capable of producing continuous EOS data for several materials simultaneously from zero pressure to a stress which may exceed one megabar. However, much of the demand for experiments are in the 20 to 500 kbar pressure regime. In this paper, we report on the first measurements using ICE on the 10-MA Saturn generator in the long pulse mode[3] with pressures up to 300 kbar. Saturn offers a lower shot cost, higher shot rate capability to meet the demand for lower pressure EOS data. VISAR diagnostics of the 6-mm-diameter, 100- to 1000-µm-thick samples (eight per shot) demonstrates the sample to sample uniformity, as well as the transition from a wave to shock profile. This data will be presented along with a discussion of pulsed power modifications to lengthen and shape the current pulse to ensure shockless loading. (1) C. Hall, et al, Phys. Plasmas 7, 2069, (2000). (2) R.B. Spielman, et al, Phys. Plasmas 5, 2105, (1998). (3) C. Deeney, et al, Phys. Plasmas 6, 3576, (1999).

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