Fluorite-teflon and fluorite-lithium fluoride-teflon thermoluminescent dosimeters for measurements in mixed and homogeneous radiation fields of gamma rays and thermal neutrons

Some optimum conditions were found for preparation of personnel thermoluminescent dosimeters from the systems fluorite-lithium fluoride-teflon and fluorite-teflon intended for measurements of the dose in mixed and homogeneous radiation fields of gamma rays and thermal neutrons. It was found that the dosimeters with 50% teflon content have a sufficient radiation sensitivity, mechanical strength and constancy in the dosimetric parameters at multiple use. Ten fluorite-teflon and ten fluorite-lithium fluoride-teflon dosimeters were prepared and a radiation dose of 5 rem by means of them was measured. It was found that the standard deviation of the average result of ten measurements is about 5% and that the maximum deviation of each result from the average one - less than 20%. It was also found that the difference between the average result obtained at the first use of the dosimeters and this one at the hundredth was about 4%. (author)