Time-resolved Cu K-shell spectra from four wire Manganin X pinches*

Four wire 25 micron diameter Manganin (86 Cu, 14 Mn) X pinches were driven with a 450 kA current pulse in Cornell's XP Pulser and Cu K-shell spectra from the emitted plasma was analyzed. Time-resolved spectra were obtained using an x-ray streak camera together with a spherically bent mica crystal spectrometer. Time-integrated data was also obtained using an FSSR-1D with a spherically bend mica crystal and compared with the time-dependent data. A simple Gabriel model has been developed to model the experimental spectra and to extract the electron temperature as a function of time. An electron temperature of 1.7 - 2 keV has been inferred from Cu K-shell spectra from both the time-integrated and time-dependent experiments. The results of the experiments as well as the application of the model are discussed.