Mid-Atomic-Number Cylindrical Wire Array Precursor Plasma Studies on Zebra

作者：Stafford Austin^*; Safronova Alla S; Kantsyrev Victor L; Weller Michael E; Shrestha Ishor; Shlyaptseva Veronica V; Coverdale Christine A; Chuvatin Alexander S

来源：IEEE Transactions on Plasma Science, 2015, 43(8): 2497-2502.

DOI：10.1109/TPS.2014.2382072

• Kinetic modeling
• wire array
• X-ray spectra
• Z-pinch

Precursor plasmas from low wire number cylindrical wire arrays (CWAs) were previously shown to radiate at temperatures >300 eV for Ni-60 (94% Cu and 6% Ni) wires in experiments on the 1-MA Zebra generator. Continued research into precursor plasmas has studied additional midatomic-number materials including Cu and Alumel (95% Ni, 2% Al, 2% Mn, and 1% Si) to determine if the >300 eV temperatures are common for midatomic-number materials. In addition, current scaling effects were observed by performing CWA precursor experiments at an increased current of 1.5 MA using a load current multiplier. The results show an increase in a linear radiation yield of similar to 50% (16 versus 10 kJ/cm) for the experiments at increased current. However, plasma conditions inferred through the modeling of X-ray time-gated spectra are very similar for the precursor plasma in both current conditions.

• 出版日期2015-8