Large diameter (45-80 mm) nested stainless steel wire arrays at the Z accelerator
- Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
- Plasma Physics Division, Naval Research Labs, Washington, D.C. 20375 (United States)
Experiments have been performed at the Z accelerator to elucidate the effects of initial load diameter on the radiated output of a 7 keV wire array x-ray source. Nested wire arrays with initial outer diameters of 45-80 mm were fielded, with the masses chosen to maintain a nominally constant coupling to the Z generator. The total radiated output decreased from {approx}1.1 MJ to <0.5 MJ for the largest diameter arrays, while the >1 keV and K-shell radiation decreased at both small and large diameters. The >1 keV output peaked at {approx}340 kJ, while the K-shell yield peaked at {approx}55 kJ. The observed trends in radiated output and stagnated plasma parameters are consistent with a phenomenological K-shell scaling theory, and are reproduced in one-dimensional modeling, although multidimensional effects, such as, growth of the Rayleigh-Taylor instability, are observed in the experiments and appear to impact the stagnated plasma for the larger diameter arrays.
- OSTI ID:
- 21103836
- Journal Information:
- Physics of Plasmas, Vol. 15, Issue 2; Other Information: DOI: 10.1063/1.2840641; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pulsed-power-driven high energy density physics and inertial confinement fusion research
Pulsed-power-driven high energy density physics and inertial confinement fusion research.