Title :
Spectroscopic study of implosions of combined double and prism-like planar wire arrays produced on the 1 MA Zebra at UNR
Author :
Yilmaz, F. ; Safronova, A.S. ; Kantsyrev, V.L. ; Esaulov, A.A. ; Williamson, K.M. ; Shrestha, I. ; Ouart, N.D. ; Weller, M.E. ; Osborne, G.C. ; Shlyaptseva, V. ; Rudakov, L.I.
Author_Institution :
Phys. Dept., Univ. of Nevada, Reno, NV, USA
Abstract :
Summary form only given. 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 and L-shell Mo radiation from the implosion of compact single and double PWAs 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). 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. X-ray 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.
Keywords :
Z pinch; aluminium; aluminium alloys; exploding wires; molybdenum; plasma X-ray sources; plasma density; plasma diagnostics; plasma production; plasma temperature; Al; Al 5056 PWA; AlMgJkJk; DPWA load implosion dynamics; K-shell radiation; Mo; PCD current signals; PPWA load implosion dynamics; UNR; X-ray time gated spectra; X-ray time integrated spectra; XRD current signals; Z pinch loads; Zebra facility; alternating Aluminium-Molybdenum wires; bright spot generation; compact cylindrical wire arrays; compact single planar wire arrays; current 1 MA; double planar wire arrays; electron density; electron temperature; implosion radiative properties; nonLTE models; opacity axial gradient; pinhole images; prism like planar wire arrays; skewed wire configuraton; straight z-axis oriented wire configuraton; wire array implosion spectroscopy; Electrons; Image analysis; Signal analysis; Signal resolution; Spatial resolution; Spectroscopy; Temperature; Wire; X-ray imaging; X-ray scattering;
Conference_Titel :
Plasma Science - Abstracts, 2009. ICOPS 2009. IEEE International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2617-1
DOI :
10.1109/PLASMA.2009.5227587