Radiative Properties of Implosions of Stainless Steel Wire Arrays with Application to Astrophysics
- University of Nevada, Reno, NV 89557 (United States)
- Sandia National Laboratories, Albuquerque, NM 87185 (United States)
- NNSA/DOE Headquarters, Washington D.C. 20585 (United States)
Experiments with different stainless steel (SS) wire loads were performed on the 1 MA Zebra Z-pinch generator at University of Nevada, Reno. The wire array loads consisted of 7.6 {mu}m SS wires and had 10 wires for the planar wire array with an interwire gap of 1 mm and 8 wires for the cylindrical wire array of a 16 mm diameter. In addition, a single-wire experiment with a 25 {mu}m SS wire was carried out. The different wire loads were used to provide a broader spectrum of plasma conditions. Time-integrated and time-gated x-ray images, as well as time-integrated, spatially-resolved and spatially-integrated x-ray spectra, were collected and analyzed. Both K-shell and L-shell radiation were recorded using LiF and KAP crystal spectrometers, respectively. Non-LTE kinetic models of Fe and Ni are employed to derive plasma parameters. For axially resolved L-shell spectra, the resulting electron temperatures are between 230 and 300 eV (higher near the cathode) and electron densities vary from 10{sup 19} to 10{sup 20} cm{sup -3} dependent on the load. The advantage of using Z-pinch plasmas for astrophysical applications is highlighted.
- OSTI ID:
- 21255322
- Journal Information:
- AIP Conference Proceedings, Vol. 1088, Issue 1; Conference: 7. international conference on dense Z-pinches, Alexandria, VA (United States), 12-21 Aug 2008; Other Information: DOI: 10.1063/1.3079711; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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