GB2242520B - Explosives detector - Google Patents

Explosives detector

Info

Publication number
GB2242520B
GB2242520B GB9103100A GB9103100A GB2242520B GB 2242520 B GB2242520 B GB 2242520B GB 9103100 A GB9103100 A GB 9103100A GB 9103100 A GB9103100 A GB 9103100A GB 2242520 B GB2242520 B GB 2242520B
Authority
GB
United Kingdom
Prior art keywords
neutron
source
identify
chamber
proton beam
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 - Fee Related
Application number
GB9103100A
Other versions
GB9103100D0 (en
GB2242520A (en
Inventor
Peter Howard Fowler
Peter Antony Eabry Stewart
John Douglas Rogers
Martin John Allen
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.)
Rolls Royce Submarines Ltd
Original Assignee
Rolls Royce Marine Power Operations Ltd
Rolls Royce and Associates Ltd
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 Rolls Royce Marine Power Operations Ltd, Rolls Royce and Associates Ltd filed Critical Rolls Royce Marine Power Operations Ltd
Priority to US07/656,942 priority Critical patent/US5124554A/en
Publication of GB9103100D0 publication Critical patent/GB9103100D0/en
Publication of GB2242520A publication Critical patent/GB2242520A/en
Application granted granted Critical
Publication of GB2242520B publication Critical patent/GB2242520B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
    • G01N23/221—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis
    • G01N23/222—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/36—Other airport installations
    • B64F1/368—Arrangements or installations for routing, distributing or loading baggage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/234—Measuring induced radiation, e.g. thermal neutron activation analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/07—Investigating materials by wave or particle radiation secondary emission
    • G01N2223/074—Investigating materials by wave or particle radiation secondary emission activation analysis
    • G01N2223/0745—Investigating materials by wave or particle radiation secondary emission activation analysis neutron-gamma activation analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/20—Sources of radiation
    • G01N2223/204—Sources of radiation source created from radiated target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/20—Sources of radiation
    • G01N2223/206—Sources of radiation sources operating at different energy levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/30—Accessories, mechanical or electrical features
    • G01N2223/302—Accessories, mechanical or electrical features comparative arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/50—Detectors
    • G01N2223/501—Detectors array
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/22—Fuels; Explosives

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

Apparatus for non-invasively inspecting an object, such as an item of luggage, for explosives material comprises a multi-channel thermal neutron inspection system having a plurality of neutron irradiation chambers. Simultaneous operation of several channels increases maximum system throughput several times. Each chamber has a lithium neutron source, 56, (72 Fig. 2 not shown) which is stimulated to neutron production by a proton beam. Beam switching magnets (60 Fig. 2 not shown) are energised by pulsing to divert a common proton beam to each source in turn. The initial beam is generated by a radio frequency quadrupole accelerator 66. The advantages of this system are very low residual source activity and controllable neutron production thereby minimising safety hazards. The irradiation chamber may contain several different gamma ray detectors (80, 82, 84, 86 Figs. 2 and 3 not shown) to identify the elements present in explosives material. In addition a neutron radiography imaging means (88 Fig. 2 not shown) may be employed to identify the presence of potential shielding materials. <IMAGE>
GB9103100A 1990-02-20 1991-02-14 Explosives detector Expired - Fee Related GB2242520B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/656,942 US5124554A (en) 1990-02-20 1991-02-19 Explosives detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909003851A GB9003851D0 (en) 1990-02-20 1990-02-20 Explosives detector

Publications (3)

Publication Number Publication Date
GB9103100D0 GB9103100D0 (en) 1991-04-03
GB2242520A GB2242520A (en) 1991-10-02
GB2242520B true GB2242520B (en) 1994-06-01

Family

ID=10671337

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909003851A Pending GB9003851D0 (en) 1990-02-20 1990-02-20 Explosives detector
GB9103100A Expired - Fee Related GB2242520B (en) 1990-02-20 1991-02-14 Explosives detector

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909003851A Pending GB9003851D0 (en) 1990-02-20 1990-02-20 Explosives detector

Country Status (1)

Country Link
GB (2) GB9003851D0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742427A1 (en) * 1995-12-19 1997-06-20 Somefi Fabrications Sa Re-routing device of suspect baggage from conveyor after detection.
US7353955B2 (en) 2003-07-16 2008-04-08 Siemens Energy & Automation, Inc. Baggage screening system and method
RU2262097C1 (en) * 2004-03-17 2005-10-10 Открытое акционерное общество "Научно-технический центр "РАТЭК" Meethod for detection of explosive in inspected subject
EP1820047B1 (en) 2004-08-12 2014-05-21 Gradel S.à.r.L. Process for neutron interrogation of objects in relative motion or of large extent
EP2102063B1 (en) * 2006-08-23 2011-07-27 Erich Kratzmaier Loading and unloading items of flight luggage
JP4576368B2 (en) * 2006-10-16 2010-11-04 三菱重工業株式会社 Neutron moderator, neutron irradiation method, and hazardous substance detection apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1392169A (en) * 1972-09-28 1975-04-30 Westinghouse Electric Corp Nuclear techniques for detecting the presence of explosive
GB2150737A (en) * 1983-11-30 1985-07-03 Atomic Energy Authority Uk Lithium target
GB2151837A (en) * 1983-11-30 1985-07-24 United Kingdom Atomic Emergy A Lithium target
EP0295429A2 (en) * 1987-05-26 1988-12-21 Science Applications International Corporation Explosive detection system
EP0297249A1 (en) * 1987-05-26 1989-01-04 Science Applications International Corporation Composite cavity structure for an explosive detection system
GB2217009A (en) * 1988-03-31 1989-10-18 Cogent Ltd Detection system for explosives

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1392169A (en) * 1972-09-28 1975-04-30 Westinghouse Electric Corp Nuclear techniques for detecting the presence of explosive
GB2150737A (en) * 1983-11-30 1985-07-03 Atomic Energy Authority Uk Lithium target
GB2151837A (en) * 1983-11-30 1985-07-24 United Kingdom Atomic Emergy A Lithium target
EP0295429A2 (en) * 1987-05-26 1988-12-21 Science Applications International Corporation Explosive detection system
EP0297249A1 (en) * 1987-05-26 1989-01-04 Science Applications International Corporation Composite cavity structure for an explosive detection system
GB2217009A (en) * 1988-03-31 1989-10-18 Cogent Ltd Detection system for explosives

Also Published As

Publication number Publication date
GB9103100D0 (en) 1991-04-03
GB2242520A (en) 1991-10-02
GB9003851D0 (en) 1990-04-18

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Legal Events

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

Effective date: 19950214