公开(公告)号：US4582991A

公开(公告)日：1986-04-15

申请号：US476952

申请日：1983-03-21

申请人： Anthony M. Leonardi-Cattolica ,  Dale H. McMillan ,  John D. Jobe

发明人： Anthony M. Leonardi-Cattolica ,  Dale H. McMillan ,  John D. Jobe

IPC分类号： G01N9/24 ,  G01N23/09 ,  G01N23/00

CPC分类号： G01N9/24 ,  G01N23/09

摘要： A method of measuring the density of a first material containing a moderator of fast neutrons comprising the steps of: emitting fast neutrons into a sample having a predetermined volume confined in a predetermined shape and sensing the rate of slow neutrons emerging from the sample for each of a plurality of samples of a second material, each of the plurality of samples of the second material having a different known density and neutron moderating and absorbing characteristics that are substantially the same as the neutron moderating and absorbing characteristics of the first material; emitting fast neutrons into a sample of the first material having a predetermined volume confined in a predetermined shape; sensing the rate of slow neutrons emerging from the sample of first material; and comparing the rate sensed in the sensing of the sample of the first material with the rates sensed in the sensing of the plurality of samples of the second material to determine the density of the first material.

摘要翻译： 一种测量包含快中子慢化剂的第一材料的密度的方法，包括以下步骤：将具有预定体积的快中子发射到具有预定形状的样品中，并检测每个样品中出现的慢中子速率 多个第二材料的样品，第二材料的多个样品中的每一个具有与第一材料的中子调节和吸收特性基本相同的已知密度和中子调节和吸收特性; 将快中子发射到具有限定在预定形状的预定体积的第一材料的样品中; 感测从第一种材料样品中出现的慢中子的速率; 以及将在第一材料的样品的感测中感测到的速率与在感测第二材料的多个样品中感测到的速率进行比较，以确定第一材料的密度。

公开(公告)号：US4956763A

公开(公告)日：1990-09-11

申请号：US226171

申请日：1988-07-29

申请人： William B. Stewart, Jr. ,  Henry K. Lau ,  Anthony M. Leonardi-Cattolica

发明人： William B. Stewart, Jr. ,  Henry K. Lau ,  Anthony M. Leonardi-Cattolica

IPC分类号： G05D9/12

CPC分类号： G05D9/12 ,  Y10T137/7287 ,  Y10T137/7313

摘要： A portable self-contained surge level controller detects the liquid level in a vessel, such as by neutron backscatter, and adjusts inlet or outlet flow to compensate for incoming surges while minimizing outgoing flow disturbances.

摘要翻译： 便携式独立浪涌电平控制器例如通过中子反向散射来检测容器中的液位，并且调节入口或出口流量以补偿输入浪涌，同时最小化流出扰动。

公开(公告)号：US4870278A

公开(公告)日：1989-09-26

申请号：US203977

申请日：1988-06-08

申请人： Anthony M. Leonardi-Cattolica ,  Dale H. McMillan ,  Alexander Telfer

发明人： Anthony M. Leonardi-Cattolica ,  Dale H. McMillan ,  Alexander Telfer

IPC分类号： G01F23/288

CPC分类号： G01F23/288

摘要： The range of a neutron backscatter fluid level detector is extended to provide essentially continuous level indication by interpolating neutron backscatter counts of neutrons supplied from a plurality of sources at various heights.

摘要翻译： 中子后向散射液位检测器的范围被扩展以通过内插来自多个源的不同高度的中子的中子后向散射计数提供基本上连续的电平指示。