Optimization of nickel L-shell radiation from a wire array Z-pinch using initial array radius scaling
- 1 January 1989
- proceedings article
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 195 (1) , 55-61
- https://doi.org/10.1063/1.38891
Abstract
Time‐resolved diagnostics have been used to study nickel wire array Z‐pinch experiments on the DNA/Double‐EAGLE generator. When 4 MA currents are used to implode arrays of different initial diameters, a maximum yield of 40 kJ, around 1 keV from the nickel L‐shell, is produced by an array with a diameter of 15 mm. Filtered X‐ray pinhole photography and time‐resolved crystal X‐ray spectroscopy reveal that increasing the diameter beyond 15 mm causes a higher temperature but lower density plasma with the net effect of reducing the L‐shell radiation. At diameters less than the optimum, the bulk plasma is too cold to produce nickel L‐shell line emission except from localized hot spots.Keywords
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