Large diameter copper wire array implosions for K-shell x-ray generation on the refurbished Z machine

Copper wire arrays have previously been fielded in large diameter (up to 70 mm) nested configurations on the 20 MA Z machine, with average Cu K-shell (8.4 keV) yields of 20 kJ typical. More recently, Cu K-shell source development studies have been performed on the refurbished Z machine, which in initial commissioning shots has produced just over 20 MA current in these loads. At full capability, the refurbished Z is anticipated to drive 25 MA z-pinch implosions with double the stored energy as previously available at the facility.