GB1548868A - Interface detection by neutron scatterng - Google Patents

Interface detection by neutron scatterng

Info

Publication number
GB1548868A
GB1548868A GB3477675A GB3477675A GB1548868A GB 1548868 A GB1548868 A GB 1548868A GB 3477675 A GB3477675 A GB 3477675A GB 3477675 A GB3477675 A GB 3477675A GB 1548868 A GB1548868 A GB 1548868A
Authority
GB
United Kingdom
Prior art keywords
detector
source
neutron
neutrons
interface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3477675A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to GB3477675A priority Critical patent/GB1548868A/en
Priority to CA256,527A priority patent/CA1067212A/en
Priority to CH1057776A priority patent/CH610664A5/en
Priority to NL7609214A priority patent/NL7609214A/en
Priority to FR7625195A priority patent/FR2321684A1/en
Priority to JP9826476A priority patent/JPS5226886A/en
Priority to SE7609252A priority patent/SE7609252L/en
Priority to DE19762637358 priority patent/DE2637358A1/en
Publication of GB1548868A publication Critical patent/GB1548868A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/288—X-rays; Gamma rays or other forms of ionising radiation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measurement Of Radiation (AREA)

Abstract

In order to detect the interface, a californium-252 neutron source (2) is employed, the scattered neutrons being observed by means of a helium-3 detector (1). Said detector is connected to a preamplifier (3) of a high-voltage source (4) for the bias, an analysing amplifier (5) and a digital counter (6). The detector system is arranged in a shield (7) which consists of a graphite reflector (8), a paraffin moderator (9) and a cadmium layer (10). In order to detect an interface of materials having different hydrogen content in a steel vessel, there is arranged on the outside thereof a neutron source and a detector, which are at a mutual distance of at most 50 cm. Such an arrangement of detector and source is permissible, because the detector is considerably more sensitive to the neutrons scattered by hydrogen nuclei than to neutrons radiated by the source. <IMAGE>
GB3477675A 1975-08-21 1975-08-21 Interface detection by neutron scatterng Expired GB1548868A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB3477675A GB1548868A (en) 1975-08-21 1975-08-21 Interface detection by neutron scatterng
CA256,527A CA1067212A (en) 1975-08-21 1976-07-07 Interface detection by neutron scattering
CH1057776A CH610664A5 (en) 1975-08-21 1976-08-19 Method and appliance for detecting an interface of materials having different hydrogen content
NL7609214A NL7609214A (en) 1975-08-21 1976-08-19 SIGNALING OF A PARTITION BY MEANS OF NEUTRON SCREENING.
FR7625195A FR2321684A1 (en) 1975-08-21 1976-08-19 METHOD OF DETECTION OF AN INTERFACE BY DIFFUSION OF NEUTRONS
JP9826476A JPS5226886A (en) 1975-08-21 1976-08-19 Detection of surface with neutron dispersion
SE7609252A SE7609252L (en) 1975-08-21 1976-08-19 METHOD AND APPARATUS FOR DETECTING A BUTTON SURFACE IN MATERIALS WITH DIFFERENT WHEAT CONTENT AND PRESENT IN A METAL CANLER OR TUBE
DE19762637358 DE2637358A1 (en) 1975-08-21 1976-08-19 METHOD AND DEVICE FOR DETERMINING AN INTERFACE OF MATERIALS WITH DIFFERENT HYDROGEN CONTENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3477675A GB1548868A (en) 1975-08-21 1975-08-21 Interface detection by neutron scatterng

Publications (1)

Publication Number Publication Date
GB1548868A true GB1548868A (en) 1979-07-18

Family

ID=10369808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3477675A Expired GB1548868A (en) 1975-08-21 1975-08-21 Interface detection by neutron scatterng

Country Status (7)

Country Link
JP (1) JPS5226886A (en)
CA (1) CA1067212A (en)
CH (1) CH610664A5 (en)
DE (1) DE2637358A1 (en)
FR (1) FR2321684A1 (en)
GB (1) GB1548868A (en)
NL (1) NL7609214A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340229A (en) * 1998-07-28 2000-02-16 British Nuclear Fuels Plc Neutron absorption monitoring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60250216A (en) * 1984-05-25 1985-12-10 Osaka Gas Co Ltd Discrimination of inside condition of pipe
JP2007163352A (en) * 2005-12-15 2007-06-28 Japan Energy Corp Liquid level meter and measuring of liquid level

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340229A (en) * 1998-07-28 2000-02-16 British Nuclear Fuels Plc Neutron absorption monitoring

Also Published As

Publication number Publication date
CH610664A5 (en) 1979-04-30
FR2321684A1 (en) 1977-03-18
NL7609214A (en) 1977-02-23
CA1067212A (en) 1979-11-27
FR2321684B1 (en) 1982-04-16
DE2637358A1 (en) 1977-03-03
JPS5226886A (en) 1977-02-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee