ATTEMPT TO EVALUATE CHLORINATED HYDROCARBON DOSIMETERS BY CROSS CALIBRATING ELEVENnGAMMA RAY SOURCES

摘要

An evaluation of the chlorinated hydrocarbon dosimetry system of Convair, Fort Worth was attempted by the Materials Laboratory, Wright Air Development Center with the cooperation of a number of high intensity irradiation facilities throughout the country* The evaluation consisted of two phases. The first phase tested the precision of the dosimetry system. It involved the irradiation of thirty five single dosimeters at Wright Air Development Center. The second phase was intended to field test the dosimetry system. It was also hoped that data from this phase would permit the cross calibration of the participating facilities.nData obtained in this program is presented with an analysis of the results. Variations from facility to facility, and within the same facility, were noted which can not be explained by the available information, however, the program was not specifically designed to separate rate effects, spectrum effects, and temperature, storage, and handling effects which could have influenced the results.nAlthough the data appear inconclusive they illustrate the problems that may arise in applying such dosimetry systems, and demonstrate the desirability of further work to cross calibrate the many -irradiation-facilities.