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公开(公告)号：US3659106A
公开(公告)日：1972-04-25
申请号：US3659106D
申请日：1970-09-21
Applicant: ATOMIC ENERGY COMMISSION
Inventor： CASON JOHN L
Abstract: A portable neutron source uses the isotope 252Cf as a source of neutrons. The isotope is mounted in a rotatable cylinder to permit the source to be ''''turned off''''. The thickness of the moderator for the neutron source can be varied to change the neutron spectrum. The neutron spectrum can also be varied by heating or cooling the moderator.
Abstract translation: 便携式中子源使用同位素252Cf作为中子源。 该同位素安装在一个可旋转的气缸中，以使“源”被“关闭”。 可以改变中子源的调节剂的厚度以改变中子谱。 也可以通过加热或冷却调节剂来改变中子谱。
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公开(公告)号：US3597613A
公开(公告)日：1971-08-03
申请号：US3597613D
申请日：1969-08-19
Applicant: ATOMIC ENERGY COMMISSION
Inventor： RAJAGOPAL VENKATESAN
Abstract: A method and apparatus for determining boron concentration in water. The principle of neutron absorption is used with an electronic arrangement for determining the time required to count a predetermined number of nonabsorbed neutrons. The time to reach the same number of counts with no boron present is subtracted. The remaining time is found to vary directly and linearly with boron concentration.
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公开(公告)号：US3532883A
公开(公告)日：1970-10-06
申请号：US3532883D
申请日：1967-03-27
Applicant: RHEINISCHE KALKSTEINWERKE
Inventor： DRESIA HEINRICH , BESSING REINHOLD , FISCHOTTER PETER , LUNAU WIGAND
IPC: G01N23/09 , G01N23/204 , G01T3/00
CPC classification number: G01N23/204 , G01N23/09
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24.发明授权
公开(公告)号：US3492479A
公开(公告)日：1970-01-27
申请号：US3492479D
申请日：1966-05-02
Applicant: TROXLER ELECTRONIC LAB INC
Inventor： LOWERY ANDREW , CLEMENTS RICHARD F
CPC classification number: G01N23/09
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公开(公告)号：US3426203A
公开(公告)日：1969-02-04
申请号：US3426203D
申请日：1965-01-04
Applicant: DRESSER IND
Inventor： YOUMANS ARTHUR H
CPC classification number: G01N23/09
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公开(公告)号：US3256434A
公开(公告)日：1966-06-14
申请号：US32518663
申请日：1963-11-20
Applicant: NUCLEAR CHICAGO CORP
Inventor： CARVER ROBERT L , PHILIP SHEVICK
IPC: G01N23/09
CPC classification number: G01N23/09
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公开(公告)号：US2845544A
公开(公告)日：1958-07-29
申请号：US61034845
申请日：1945-08-11
Applicant: SEABORG GLENN T , GERHART FRIEDLANDER , GOFMAN JOHN W
Inventor： SEABORG GLENN T , GERHART FRIEDLANDER , GOFMAN JOHN W
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公开(公告)号：US2486845A
公开(公告)日：1949-11-01
申请号：US63001745
申请日：1945-11-21
Applicant: TEXAS CO
Inventor： GERHARD HERZOG
CPC classification number: G01N23/09 , G01B15/025
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公开(公告)号：US20230266257A1
公开(公告)日：2023-08-24
申请号：US18020673
申请日：2021-08-11
Applicant: Dynaxion B.V.
IPC: G01N23/2206 , G01N23/222 , G01N23/09
CPC classification number: G01N23/2206 , G01N23/222 , G01N23/09 , G01N2223/3306 , G01N2223/643 , G01N2223/316 , G01N2223/204
Abstract: A detection system and method for investigating a content of an item to be inspected, comprising an inspection space for receiving said item and a neutron generator for generating a directional beam of energetic neutrons, directed towards said inspection space. A detector is responsive to interaction products coming from said inspection space and impinging substantially along a detection axis upon interaction of said energetic particles with nuclei of material of said item. Said neutron generator is configured to expose said inspection space to a uni-directional beam of energetic neutrons along an interrogation axis through said inspection space. Said directional beam has a smaller cross section than a corresponding cross section of said inspection space and smaller than a corresponding cross section of said item to be inspected. Said detector detects said interaction products along a detection axis upon interaction of said uni-directional beam of energetic neutrons with said item to be inspected.
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公开(公告)号：US20220163687A1
公开(公告)日：2022-05-26
申请号：US17667914
申请日：2022-02-09
Applicant: QUAESTA INSTRUMENTS, LLC
Inventor： MAREK ZREDA , STEVEN HAMANN , MARTIN SCHRÖN , MARKUS KÖHLI
Abstract: A local area, thermal cosmogenic neutron sensor is used for detecting moisture within a measurement surface. A neutron detector is positioned on a stand structure holding the detector above a measurement surface. A neutron shield is positioned around at least a portion of the neutron detector. The neutron shield substantially covers lateral sides of the neutron detector and substantially an entirety of a top of the neutron detector and is not positioned on a bottom side of the neutron detector. Local area, thermal cosmogenic neutrons propagating from the measurement surface travel through an air space before arriving at the neutron detector.
