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Time-resolved spectroscopy and energy-resolved imaging of coated wire arrays as the interwire spacing is decreased

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10 Author(s)
B. H. Failor ; Maxwell Phys. Int., San Leandro, CA, USA ; C. Deeney ; P. D. LePell ; J. C. Riordan
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We have spectroscopically observed, as suggested by Sanford et al. (1996), a transition from discrete wire implosions to the implosion of a more continuous plasma shell in aluminum-wire-array Z pinches driven by a 7-TW electrical generator. The time history of magnesium dopant K-shell X-ray emission depended on the interwire spacing, as well as whether the dopant was introduced as an alloy in or a coating on the aluminum wires. We diagnose the final assembly of the hot, dense K-shell emitting core, a region of the pinch not accessible to laser interferometry or optical/UV emission measurements.

Published in:

IEEE Transactions on Plasma Science  (Volume:30 ,  Issue: 2 )