Christopher L. Morris
Los Alamos National Laboratory
Los Alamos, NM

Intermediate energy protons are being used for flash radiography. Proton beams are shown to provide a flexible time format, excellent position resolution, and adjustable contrast, for a wide range of experiments. Short pulses of protons, provided by the LANSCE 800 MeV linear accelerator at Los Alamos National Laboratory, are dispersed and focused using magnetic lenses. Typically, 50 ns wide pulses of 4?109 protons are dispersed across the 12 cm?12 cm object plane. The transmitted beam is then imaged on a detector plane using a magnetic lens . The magnet lens system images scattering angles in the object at an intermediate location. Angle collimators at this location are used to optimize the scene contrast for specific experiments. A system of gated, CCD cameras  is used to obtain up to 7 time frames per experiment. More time frames can be obtained by using a second proton lens and image plane, or by using framing cameras. Multiple images have been obtained with pulse spacings as small as 357 ns.