METHOD MEASURING ABSORBED DOSE OF IONIZING RADIATION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 1997 - IPC

FIELD: measuring technology. SUBSTANCE: method is based on radiation of radio photoluminescent detector by pulses of exciting optical radiation, on measurement of intensity of luminescence of detector within limits of measurement time interval and on calculation of value of absorbed dose. Detector in this case is irradiated by continuous spectrum which spectral range lies within bounds of spectral range of excitation of radio photoluminescent centers in detector and width of spectral range of exciting radiation is not less than value of inhomogeneous broadening of excitation radio photoluminescent centers in detector. Duration of pulses is established sufficient for excitation of radio photoluminescent centers in amount from 0.1 to 0.9 of its balanced value. Time of delay of measurement start is chosen such that number of excited radio photoluminescent centers is kept from 0.95 to 0.1 of value achieved by excitation. Duration of measurement interval is chosen such that number of remaining excited radio photoluminescent centers at moment of termination of measurement amount to 0.9 to 0.05 of value achieved by moment of measurement start. Intensity of radio photoluminescence is measured in spectral range which value of short-wave boundary is not less than value of long-wave boundary of spectrum of background luminescence of detectors. Device for implementation of method has radiation source, optical elements, photodetectors and recording electron unit. Source has continuous spectrum and microsecond interval of pulse duration. First light filter has spectral transmission range lying within limits of spectral range of excitation of radio photoluminescent centers in detector and width not less than value of inhomogeneous broadening of excitation spectrum of radio photoluminescent centers in detector. Second light filter is so manufactured that value of short-wave boundary of its spectral range of transmission is not less than value of long-wave boundary of spectrum of background luminescence of detectors. EFFECT: increased accuracy and authenticity of method. 2 cl, 3 dwg