Radiation-induced thermally activated polarization transfers in CaF2

Abstract
The strong radiation‐induced thermally activated depolarization (RITAD) effect previously reported in CaF2 can be identified with a corresponding polarization (RITAP) phenomenon. These RITAP and RITAD effects are orders‐of‐magnitude more radiation sensitive than radioelectret phenomena and consist of polarization transfers among electron, hole, and ionic‐charge transport states of the material. Net sample polarization is independent of radiation exposure for exposures smaller than 103 R.