Grazing-incidence mirror streak camera diagnostic for emission measurements of imploding z pinches on the Sandia Z -machine

A soft x-ray (0.1–1 keV ) streak camera using a grazing-incidence mirror has been developed for the Sandia Z facility, a 20 MA , 100 ns rise-time accelerator that can generate >200 TW ,2 MJ , x-ray pulses. The streak camera is used to measure with one dimension of spatial resolution the continuous time history of sub-kilo-electron-volts emission from z -pinch and radiation flow experiments. Radiation >1 keV is eliminated by the use of a grazing-incidence mirror and transmission filters. The diagnostic has a magnification of 1.22, a 20 mm field-of-view and a spatial resolution of ∼350 μ m . The recording length of the instrument is variable in duration up to a maximum of 33 ns , making it well suited for the typical 100 ns Z pinch implosion times. The spatial resolution can readily be changed to be along either the axial or the radial direction.