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Studies of Radiative and Implosion Characteristics From Brass Planar Wire Arrays

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8 Author(s)
Ouart, N.D. ; Dept. of Phys., Univ. of Nevada, Reno, NV, USA ; Safronova, A.S. ; Kantsyrev, V.L. ; Esaulov, A.A.
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Experiments with single-planar wire arrays (SPWA) and double PWAs (DPWAs) with brass 310 wires were carried out on the 1-MA Zebra generator at the University of Nevada, Reno. Brass 310 (70% Cu and 30% Zn) PWAs have either 10 or 16 wires with diameters of 10.9 or 7.62 ??m, respectively. The diagnostic suite included a bolometer, fast X-ray detectors, an axially resolved time-integrated spectrometer, a time-gated spectrometer, a time-gated pinhole camera, and a streak camera. A wire dynamic model was applied to study implosion characteristics, and non-LTE Cu and Zn kinetic models were used to model L-shell radiation from brass. The analysis of the time-gated spectra showed a correlation between the modeled electron temperature and the X-ray signal, and it agrees well with the maximum values from the time-integrated spatially resolved spectra. Modeling of time-gated and time-integrated spectra from brass PWAs indicates stronger opacity effects in L-shell lines for DPWAs.

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Plasma Science, IEEE Transactions on  (Volume:38 ,  Issue: 4 )