Inner-shell radiation from wire array implosions on the Zebra generator
- Plasma Physics Division, Naval Research Laboratory, Washington, District of Columbia 20375 (United States)
- Physics Department, University of Nevada, Reno, Nevada 89557 (United States)
- Consultant to NRL through Engility Corp., Chantilly, Virginia 20151 (United States)
- Berkeley Research Associates, Beltsville, Maryland 20705 (United States)
Implosions of brass wire arrays on Zebra have produced L-shell radiation as well as inner-shell Kα and Kβ transitions. The L-shell radiation comes from ionization stages around the Ne-like charge state that is largely populated by a thermal electron energy distribution function, while the K-shell photons are a result of high-energy electrons ionizing or exciting an inner-shell (1s) electron from ionization stages around Ne-like. The K- and L-shell radiations were captured using two time-gated and two axially resolved time-integrated spectrometers. The electron beam was measured using a Faraday cup. A multi-zone non-local thermodynamic equilibrium pinch model with radiation transport is used to model the x-ray emission from experiments for the purpose of obtaining plasma conditions. These plasma conditions are used to discuss some properties of the electron beam generated by runaway electrons. A simple model for runaway electrons is examined to produce the Kα radiation, but it is found to be insufficient.
- OSTI ID:
- 22252011
- Journal Information:
- Physics of Plasmas, Vol. 21, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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