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Large diameter nested wire array z-pinches imploded on the Z-generator at Sandia National Laboratories have been used extensively to generate high intensity K-shell radiation. Large initial radii are required to obtain the high implosion velocities needed to efficiently radiate in the K-shell. This necessitates low wire numbers and large inter-wire gaps which introduce large azimuthal non-uniformities...
Summary form only given. EUV spectroscopy is a feasible tool for diagnosing of Z-pinch plasma before and after stagnation in complement to X-ray spectroscopy, which is conventionally used in studying of the stagnating hot dense plasmas. A collection of aluminum EUV spectra from implosions of traditional cylindrical wire arrays and new planar wire arrays (PWA) on the 1 MA Zebra generator at UNR are...
Summary form only given. Magneto-hydrodynamic simulations provide a powerful tool for improving our understanding of the complex physical processes underlying the behavior of wire array Z-pinches. With the advent of large scale parallel computing and three dimensional models, it is now becoming possible to model the entire plasma volume with sufficient resolution to capture the important physical...
We present 3D resistive MHD modeling of the implosion and stagnation of single and nested wire array Z-pinches on the Z generator. Compact tungsten wire array Z-pinches have proven to be a powerful, reproducible X-ray source. The use of nested wire arrays has provided further gains in X-ray power and the pulse shaping capability necessary for application to inertial confinement fusion. Radiography...
Summary form only given. The planar wire arrays with multi-plane configuration (triple- TPWA and cross-plane-CPWA) were studied and compared with single and double-planar wire arrays (SPWA and DPW A) on the 1 MA, 100 ns Zebra generator at the University of Nevada, Reno. The uniform arrays were made of Al or Mo, and the combined made of both materials. The DPWA and TPWA consist of two and three wire...
Summary form only given. Development of a predictive computational model for wire array z-pinches has been inhibited by the 3D nature of the dynamics. We have developed a 3D computational model for simulating cylindrical wire array z-pinches. In lieu of trying to simulate individual wires in the array from the beginning of the initiation phase, which is computationally impractical, we have incorporated...
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