A novel plasma pinch device that produces a relatively large nanosecond burst of neutrons and fully stripped ions is being developed at the University of California (Livermore and Berkeley). The electrical efficiency for the burst is in the percent range, and there is evidence that nuclear burn is occurring in the pinch. The device appears to operate like an imploding ion beam, with MeV ion temperatures, using the Bennett pinch as a virtual electrode. Reactions observed in a C/sup 6+/, D/sup +/ plasma produce 10/sup 11/ (D, D) neutrons, and a jet of 10/sup 14/ almost monochromatic ions, many of which are C/sup 6+/. H/sup +/ and D/sup +/ at 30 MeV from a 2- to 5-MeV electrode potential, show that a collective acceleration process must be invoked. (auth)