公开(公告)号：US4447727A

公开(公告)日：1984-05-08

申请号：US278958

申请日：1981-06-30

Applicant: Stanley J. Friesenhahn

Inventor： Stanley J. Friesenhahn

IPC: G01T3/00 ,  H01J47/12 ,  G01T1/18

CPC classification number: G01T3/00 ,  H01J47/1244

Abstract: A large area neutron proportional counter is constructed utilizing a large sealed metal box. The interior walls of the box are coated with .sup.6 Li enriched metal. A multicelled proportional counter structure within the internal space defined by the box is fabricated using a hydrogenous plastic. The interior of the box is filled with a counting gas. Wires running through the box, and insulated therefrom, are raised to a suitably high potential so that the counting gas functions in the proportional region to amplify and collect charge from ionizing events in the gas, the wires acting as a anodes and the box as cathode. The cell dimensions are chosen so that .sup.6 Li(n,.alpha.).sup.3 H reaction products will, with high probability, stop in the gas. Compton electrons, on the other hand, will mostly be stopped in the walls or in the hydrogenous plastic cell boundaries. An array of such counters may be utilized for detection of neutron emitting materials passing through a portal.

Abstract translation: 利用大型密封金属盒构建大面积中子比例计数器。 箱子的内壁涂有6Li富集金属。 使用氢塑料制造由盒子限定的内部空间内的多层比例计数器结构。 箱子的内部装满了计数气体。 通过箱体进行绝缘的电线被提升到适当的高电位，使得计数气体在比例区域中起作用，以放大并收集来自气体中的电离事件的电荷，用作阳极的电线和阴极盒 。 选择电池尺寸使得6Li（n，α）3 H反应产物将很可能在气体中停止。 另一方面，康普顿电子将主要停留在墙壁或氢塑料细胞边界。 这种计数器的阵列可用于检测通过入口的中子发射材料。

公开(公告)号：US4365159A

公开(公告)日：1982-12-21

申请号：US203006

申请日：1980-11-03

Applicant: Charles A. Young

Inventor： Charles A. Young

IPC: H01J47/12 ,  G01J1/18

CPC classification number: H01J47/1244

Abstract: A neutron detection apparatus is provided which includes a selected numberf flat surfaces of lithium-6 foil, and which further includes a gas mixture in contact with each of the flat surfaces for selectively reacting to charged particles emitted by or radiated from the lithium foil. A container is provided to seal the lithium foil and the gas mixture in a volume from which water vapor and atmospheric gases are excluded, the container having one or more walls which are transmissive to neutrons. Monitoring equipment in contact with the gas mixture detects reactions taking place in the gas mixture, and, in response to such reactions, provides notice of the flux of neutrons passing through the volume of the detector.

Abstract translation: 提供一种中子检测装置，其包括选定数量的锂-6箔的平坦表面，并且还包括与每个平坦表面接触的气体混合物，用于选择性地对从锂箔发射或辐射的带电粒子反应。 提供容器以将锂箔和气体混合物密封在排除水蒸汽和大气的气体的体积内，容器具有一个或多个对中子透射的壁。 与气体混合物接触的监测设备检测气体混合物中发生的反应，并且响应于这种反应，提供通过检测器体积的中子通量的通知。