Picosecond pulse radiolysis studies

A stroboscopic pulse radiolysis system is described which uses Cerenkov light produced by the fine structure pulses of a 45 MeV electron beam from the electron linear accelerator installed at Hokkaido University. Tests of this stroboscopic pulse radiolysis system are carried out using Cerenkov light without any samples. The Cerenkov light eliminated below 350 nm by a glass filter passed through a monochromator and is detected with a photomultiplier tube connected in a five stage configuration. Three types of signal are obtained and the light intensity is found to be highly satisfactory. The electron beam can be focused to about a 20 mm diameter at the sample position. A dose measured at this position is 46 rads per fine structure pulse. (auth.)