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A study of the spallation of copper by and 190-Mev deuterons has been made. Radiochemical methods have been employed to determine absolute cross sections for the production of a number of nuclides produced by the interaction of these high-energy particles with copper.

Soft x-ray contact microscopy, utilizing single-shot exposures of approximately 60 nanoseconds duration in polymethyl methacrylate, has been realized with a resolution of 300 angstroms. The radiation spectrum is intense in the "window" between 23 and 44 angstroms where water is transparent compared to biological materials, and therefore permits viewing of wet samples.