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Measurement of the \sim 0.1- to > 10-keV Energy Distribution for an Argon Z-Pinch at the 15-MA Level

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10 Author(s)
Coleman, P.L. ; Alameda Appl. Sci. Corp., San Leandro, CA ; Apruzese, J.P. ; Velikovich, A.L. ; Thornhill, J.W.
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We report an approximate energy distribution (coarse spectrum) over the range ~0.1 to > 10 keV for the X-ray output of an argon Z-pinch. The tests, conducted at ~15-MA peak current, utilized an 8-cm diameter double-shell nozzle. Sze (2001) have previously described the performance of this Z-pinch with emphasis on the K-shell line emission at ~3 keV. Additional measurements that address the non-K-line output of the Z-pinches are presented here. On the one hand, > 4-keV photons due to the free-bound continuum constitute a significant fraction, almost 30%, of the nominal K-shell emission. On the other hand, the sub-3-keV L-shell lines and continuum show distinctive time histories and significant yields. These nonresonance-line emissions are important for a more complete understanding of the implosion physics, for proper analysis of diagnostic responses, and for their effects upon objects exposed to the Z-pinch's radiation

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Plasma Science, IEEE Transactions on  (Volume:35 ,  Issue: 1 )