Hard X-rays from Hybrid X Pinches.

X pinches are well known to produce very small, dense plasma pinches ("hot spots") that emit short bursts of 1.5-8 keV radiation. Hard X-ray radiation in the 8-100 keV range is also emitted, only a small portion of which is associated with the X-pinch hot spot. In hybrid X-pinches, the "long" X-ray pulse is terminated by fast closure of t he gap between the two conical electrodes by rapidly expanding electrode plasmas. The temporal, spectral, and spatial properties of this higher energy radiation, 10-60 keV, have been studied. This radiation was used for point-projection imaging with magnification between 1.5 and 3, and spatial resolution less than 100 micrometers was demonstrated. [ABSTRACT FROM AUTHOR]