Investigating Volumetric Inclusions of Semiconductor Materials to Improve Flashover Resistance in Dielectrics
Abstract not provided.
Publications
Developing An Extended Convolute Post to Drive An X-Pinch for Radiography at the Z Facility
IEEE International Conference on Plasma Science
X-ray radiography has been used to diagnose a wide variety of experiments at the Z facility including inertial confinement fusion capsule implosions, the growth of the magneto-Rayleigh-Taylor instability in solid liners, and the development of helical structures in axially magnetized liner implosions. In these experiments, the Z Beamlet laser (1 kJ, 1 ns) was used to generate the x-ray source. An alternate x-ray source is desirable in experiments where the Z Beamlet laser is used for another purpose (e.g., preheating the fuel in magnetized liner inertial fusion experiments) or when multiple radiographic lines of sight are necessary.
CHARACTERISTIC EFFECTS OF PULSED POWER GENERATORS OF DIFFERENT ARCHITECTURE ON THE IMPLOSION DYNAMICS OF MID-Za DOUBLE PLANAR WIRE ARRAYS
Abstract not provided.
Load dynamics of double planar foil liners and double planar wire arrays on the UM MAIZE LTD generator
Physics of Plasmas
In previous studies using the University of Nevada, Reno's (UNR's) high-impedance Zebra Marx generator (1.9 ω, 1.7 MA, 100 ns), Double Planar Wire Arrays (DPWAs) proved to be excellent radiators, and Double Planar Foil Liners (DPFLs) proved useful for future inertial confinement fusion applications. This article presents the results of joint UNR/UM (University of Michigan) experiments with aluminum (Al) DPWAs, Al DPFLs, and tungsten (W) DPWAs using UM's Michigan Accelerator for Inductive Z-Pinch Experiments (MAIZE) generator, a low-impedance Linear Transformer Driver (LTD) (0.1 ω, 0.5-1 MA, and 100-250 ns). The main goals of this study were twofold: the first was a pioneering effort to test whether a relatively heavy Al DPFL could successfully be imploded on a low-impedance university-scale LTD like the MAIZE generator, and, if so, to analyze the results and make comparisons to the optimized, lighter DPWA configurations that have been previously studied. The DPWAs consisted of two planes of micrometer-scale diameter Al or W wires, while the DPFLs consisted of two planes of micrometer-scale thickness Al foils. Diagnostics include filtered Si-diodes, an absolutely calibrated filtered PCD, x-ray pinhole cameras, spectrometers, and gated optical self-emission imaging. The implosion dynamics and radiative properties of Al DPWAs and DPFLs and W DPWAs on the MAIZE LTD are discussed and compared. Time-dependent load inductance calculations derived from measurements of the load current and a MAIZE circuit model provide a relative measurement of pinch strength. In experiments on MAIZE, W planar wire arrays exhibited a higher peak load inductance throughout the pinch than Al DPWAs and DPFLs, while x-ray pulses from Al DPFLs had the longest emission duration.
Tungsten Z-pinch Behavior on 1 MA Generators of Different Architecturepinch Behavior on 1 MA Generators of Different Architecture
Abstract not provided.
Inductively driven transmission lines: Passively coupled devices for driving secondary loads on the Z Pulsed Power Facility
Abstract not provided.
Small-Capacitor Pulsed Power Architecture Options
Abstract not provided.
First demonstration of an inductively driven X-pinch for diagnosing high energy density experiments on the Z Pulsed Power Facility
Abstract not provided.
Inductively driven transmission lines (IDTLs): fringe-field-driven devices for powering diagnostic X-ray sources on the Z Pulsed Power Facility
Abstract not provided.
9 Results