Isothermic irradiation of nonfissionable materials in the RFT reactor by means of calorimetric devices

Abstract

The present article is concerned with the generation of heat due to the absorption of the energy of γ-radiation from the reactor spectrum in nonfissionable materials when they are irradiated in the reactor core. The calculated dependence of the γ-radiation energy mass absorption coefficient on the atomic number for the RFT spectrum was plotted [1], A steady-state method for determining the amount of heatq generated per unit mass of nonfissionable materials when they are irradiated in heat-producing assemblages, which has been developed in using RFT, is described here. The obtained values for aluminum, Steel 30, tin, and lead vary from 2.2 to 3,7 w/g for cylindrical specimens with diameters equal to 13.5 and 10 mm and a 10-Mw reactor power level. The dependence ofq on the distance to the reactor central line within the core zone has a cosinusoidal character. A method which is used for isothermic irradiation of specimens and containers at temperatures above the coolant temperature is described.