Development and improvement in accuracy and reproducibility of dosimetry systems for X-ray intercomparison, neutron and high level gamma irradiation

Lyoluminescence measurements using the amino acid glutamine have shown that a practically linear dose curve from 1 kGy to 20 kGy (100 krad to 2 Mrad) can be obtained with a standard error of the data points of 2 or 3%. Variation in the environmental conditions during post-irradiation storage of the samples greatly influence the LL signal. Clear perspex samples stored under different conditions of relative humidity have also been used, the optical density indicating the radiation dose. (Auth.)