Abstract:A long and slender position-sensitive 3He proportional counter with an outer diameter Of 8 m m and an effective length of 1.2m has been developed to measure neutron flux distributions in a critical assembly. Because it is difficult to make such a long and slender counter of conventional structure where an anode wire is stretched a t the center of a cylindrical cathode tube. three prototype electrode systems of which anode wires are supported by insulator plates have been proposed. Among these three electrode s… Show more
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