APPARATUS AND METHOD FOR DETERMINING A DOSE OF IONIZING RADIATION

摘要

An apparatus for determining a dose of ionizing radiation absorbed by a dosimeter (105) comprises a holder (110) for holding said dosimeter (105); a first light source (120), a second light source (130) and a measurement unit (140a, 140b). The first light source (120) irradiates a first light (121) on said dosimeter (105) when held by said holder (110). The second light source (130) irradiates a second light (131) on said dosimeter (105) when held by said holder (110) to excite radio photo luminescence centers in said dosimeter (105). The measurement unit (140a, 140b) is configured to measure a photo luminescence light (141) from said excited radio photoluminescence centers and to measure a transmission light (142) related to said first light (121) after passing said dosimeter (105), wherein said measurement unit (140) is further configured to determine said dose based on said measured photoluminescence light (141) and on said measured transmission light (142).