Patent ID: 9006663
Filing Date: 2015-04-14
Classification: G01T

Abstract:
1. A radiation dosimeter detection system for recording dose information about ionizing radiation absorbed and stored in one or more dosimeters located in an environment exposed to a radiation source(s), comprising: at least one dosimeter comprising a phosphor-doped fluoroperovskite compound that is configured to absorb radiation from the environment within which it is located, the dosimeter being optically coupled to a detector by an optical fibre, the detector comprising: a first optical stimulation source that is operable to emit stimulating light over the optical fibre to the dosimeter at a wavelength(s) in a first wavelength range; a second optical stimulation source that is operable to emit stimulating light over the optical fibre to the dosimeter at a wavelength(s) in a second wavelength range; an optical detector that is configured to receive and sense light emitted from the dosimeter over the optical fibre and which in response generates light detection signals representing the dose information stored in the dosimeter; and a control system that is configured to read out the dose information by processing the light detection signals from the optical detector and outputting the dose information, and which is operable or configured to selectively control either or both of the first or second optical stimulation sources so as to selectively read-out the dose information, wherein the control system is selectively operable in Radio Luminescence (RL) mode or Radio and Optically Stimulated Luminescence (ROSL) mode, and wherein the control system is operable to selectively activate or deactivate either or both of the first or second optical stimulation sources for reading out dose information in the form of instantaneous dose rate from the dosimeter based on the RL or ROSL emitted light signal from the dosimeter.