A New Principle for Radiation Dosimetry and Control

A new principle which can be used for radiation dosimetry and control is described. It is based on the behaviour of a moving electrode subjected to two opposite forces ; one of them is created by the field of an electret, which decreases during irradiation the other force, of mechanical or magnetic origin for instance, is independent of the irradiation dose. A small, light weight, individual dosimeter is described ; it gives a sound alarm when a pretedermined dose is reached ; preliminary experimental results are presented.