Abstract
The absorbed dose measurements in a mixed field of fast neutrons and γ-rays have been carried out with the Fricke and ceric sulfate dosimeters of water and heavy water. The absorption coefficients and the radiation-chemical yields of the dosimeters were calculated on the basis of the data from literature. This combination of chemical dosimeters has proved to be useful as a routine method for determining the γ-ray and fast-neutron contributions to the total absorbed dose in low atomic number materials. The dependence of the obtained result on the neutron spectrum used in the computation was evaluated, and was found to be small for hydrogen but significant for deuterium, carbon, nitrogen and oxygen.
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