Gamma-ray compensated neutron ionization chamber
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsToyokazu Gotou, Shinji Fukakusa
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Abstract
To eliminate deterioration in the saturation characteristics of gamma-rays, the total area of holes formed in a signal electrode which is arranged within a high-voltage electrode concentrically is set to a value equal to or smaller than 5% of the surface area of the signal electrode.
Claims3
A gamma-ray compensated neutron ionization chamber comprising a cylindrical or plate-like high-voltage electrode to which a high voltage is applied, a cylindrical or plate-like signal electrode for taking out a neutron current, and a cylindrical or plate-like compensating electrode to which a compensating voltage is applied, these electrodes being arranged concentrically in the order named with predetermined spacing therebetween, and a plurality of holes being formed in part of the signal electrode, wherein the total area of the holes is set to a value equal to or smaller than 5% of the surface area of the signal electrode.
Dependencies are inferred from the claim text.