Abstract
Certain dielectric materials show transient phenomena on heating following X- or γ- irradiation. There are three related phenomena which display the same pattern of behaviour, (a) thermoluminescence (T.L.); (b) thermally stimulated conductivity (T.S.C.); (c) exoelectron emission (T.S.E.). The physics of these thermally stimulated effects is discussed and the development of dosemeters utilising them is described. So far only T.L. is used in a commercially available dose measuring system. Dosimetry using T.S.C. and T.S.E. is still at the research stage.