Cellular thermal neutron detector

摘要

The present invention provides a cellular thermal neutron detector, comprising: a cellular structure comprised of one or more hollow regular hexagonal prism-shaped cellular units, wherein a neutron absorbing material is coated on an inner side of a pipe wall of each of the cellular units. Since the neutron-sensitive cellular structure is employed, the present invention can perform thermal neutron detection without using the scarce nuclide 3He, and effectively reduce the manufacture costs of the thermal neutron detector. Further, the present invention has characteristics such as a reduced or eliminated neutron detecting dead zone.

主权项

1. A thermal neutron detector comprising:
a cellular structure comprised of one or more hollow regular hexagonal prism-shaped cellular units, wherein a neutron absorbing material is coated on an inner side of a pipe wall of each of the cellular units, wherein the pipe wall of each of the cellular units is electrically grounded; an anode wire is provided along a central axis of each of the cellular units; a chamber of each of the cellular units is filled with a proportional working gas; a supporting frame surrounding a radial outer side of the cellular structure; a first template and a second template respectively having a central opening and being fixed on the supporting frame in a way of adjoining or being adjacent to either end of the cellular structure, wherein the cellular structure is connected to the supporting frame via a plurality of groups of springs evenly distributed along an envelope circumferential line of the cellular structure, to maintain spatial stability of the cellular structure, wherein each group of springs are comprised of at least two springs spaced apart from each other along a longitudinal axis of the supporting frame.