Spectroscopic study of implosions of combined double and prism-like planar wire arrays produced on the 1 MA Zebra at UNR

2009 
Recently, radiative properties of implosions of new Z-pinch loads such as compact single and double planar wire arrays (PWA) and cylindrical wire arrays, uniform as well as combined from different wire materials were extensively studied. In particular, K-shell radiation of Al and Mg from implosions of compact single planar and cylindrical wire arrays 1 and L-shell Mo radiation from the implosion of compact single and double PWAs 2 on the 1 MA UNR Zebra generator were modeled. In the present work, we study radiative performance of the new types of Al PWAs and compact alternate cylindrical wire arrays. Specifically, we have spectroscopically modeled radiation from Al-5056 double planar wire arrays (DPWA) and prism-like planar wire arrays (PPWA) 3 . DPWAs were studied in two configurations: with wires arranged straight along the z-axis or skewed wires. Alternate Al wire arrays, where Al and Mo wires were arranged in an alternating pattern, have been considered. Xray time-gated and time integrated spectra and pinhole images, PCD and XRD current signals were analyzed. Previously developed non-LTE models were applied to model axially resolved time integrated as well as time-gated spatially integrated K-shell spectra from Al and Mg and L-shell Mo spectra. Derived electron temperature, density and opacity axial gradients were studied and compared. Furthermore, bright spot generations and correlations between time integrated spectra and pinhole images were investigated. In addition, WADM was used to study the implosion dynamics of DPWA and PPWA loads.
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