EXPERIMENT ON THE ACOUSTIC RADIATION EFFECT OF ELECTRON BEAMS

<正> An acoustic radiation effect may be produced by ultrahigh energy particles while traversing water. The idea of using the acoustic radiation effect to detect ultrahigh energy particle interaction was first suggested in 1975. This is a new subject for research. In the U.S.A. and the U.S.S.R., experiments of this idea were begun on the accelerator around 1976. In order to understand sound signal’s basic properties and their relations with the parameters of the medium and the energy of the particle beam so as to analyse the mechanism of sound production, more systematic experiments of the acoustic radiation effect produced by the electron beam were carried out on the 30 MeV electron linac in October 1979. All the walls and the bottom of the water tank and