Abstract

In the calculational model developed by Warren and Shah for the computation of the gamma sensitivity ( S γ ) it has been observed that the computed S γ value is quite sensitive to the space charge distribution function assumed for the insulator region and the energy of the gamma photons. The S γ of SPNDs with Pt, Co and V emitters (manufactured by Thermocoax, France) has been measured at 60Co photon energy and a good correlation between the measured and computed values has been obtained using a composite space charge density function (CSCD), the details of which are presented in this paper. The arguments are extended for evaluating the S γ values of several SPNDs for which Warren and Shah reported the measured values for a prompt fission gamma spectrum obtained in a swimming pool reactor. These results are also discussed.

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