New developments in passive radiation dosimetry: radiation‐induced thermally activated currents

Radiation‐induced thermally activated currents (RITAC) in ultra‐high‐purity dielectrics provide a radiation dosimetry technique which is practical for applications at room temperature and is much more sensitive than other more well known, solid state dosimetry effects. The essential requirement for producing high‐radiation‐sensitivity RITAC readout, either in polarization or conductance modes of operation, is selective purification of the dosimetry material. Simple methods exist for monitoring the active impurity levels for fabrication of highly sensitive reproducible RITAC effect devices.