In-Pile Calorimetric Dosimetry, (II)

概要

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An in-pile calorimeter of twin-rod conduction type has been developed for measuring simultaneously neutron-induced and γ-induced energies. Calorimetric measurements with the apparatus were carried out in the horizontal experimental hole of JRR-1 (water boiler reactor) at a position 41.5cm from the core edge. The thermal neutron flux was 4.55×1011 n/cm2•sec at 40kW reactor power. The rates of γ-induced and neutron-induced energies per unit mass of polyethylene were 2.72(mW/g) and 1.04 (mW/g) respectively. These measured data were reasonably consistent with the values obtained with adiabatic calorimeter.
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