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GB2509673A - Detector apparatus and method - Google Patents

Detector apparatus and method Download PDF

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Publication number
GB2509673A
GB2509673A GB1407747.3A GB201407747A GB2509673A GB 2509673 A GB2509673 A GB 2509673A GB 201407747 A GB201407747 A GB 201407747A GB 2509673 A GB2509673 A GB 2509673A
Authority
GB
United Kingdom
Prior art keywords
detector
radiation
detectors
spectral
data
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.)
Granted
Application number
GB1407747.3A
Other versions
GB201407747D0 (en
GB2509673B (en
Inventor
Stephen Whitaker Snow
Ian Radley
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.)
Kromek Ltd
Original Assignee
Kromek 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 Kromek Ltd filed Critical Kromek Ltd
Publication of GB201407747D0 publication Critical patent/GB201407747D0/en
Publication of GB2509673A publication Critical patent/GB2509673A/en
Application granted granted Critical
Publication of GB2509673B publication Critical patent/GB2509673B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/167—Measuring radioactive content of objects, e.g. contamination
    • 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
    • G01N23/02—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 transmitting the radiation through the material
    • G01N23/06—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 transmitting the radiation through the material and measuring the absorption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
    • G01T1/361—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry with a combination of detectors of different types, e.g. anti-Compton spectrometers
    • 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
    • G01N2223/345—Accessories, mechanical or electrical features mathematical transformations on beams or signals, e.g. Fourier
    • 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
    • G01N2223/60—Specific applications or type of materials
    • G01N2223/618—Specific applications or type of materials food
    • 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
    • G01N2223/60—Specific applications or type of materials
    • G01N2223/626—Specific applications or type of materials radioactive material
    • 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
    • G01N33/02—Food

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Molecular Biology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Measurement Of Radiation (AREA)

Abstract

A method is described for the detection of radiation from an item (2) intended for human consumption such as a food or drink item by combined processing of spectral data from a plurality of radiation detectors (4, 6), in particular with a plurality of response functions, comprising: collecting data from radiation incident at each detector (4, 6); producing a spectral histogram for the collected data from each detector (4, 6); deconvoluting the histograms from each detector (4, 6) by applying a suitable numerical deconvolution such as a Bayesian deconvolution and in particular that makes use of the response matrix for each detector (4, 6) to derive a single spectral histogram that representatively combines information from the plurality of detectors (4, 6). An apparatus, such as a hybrid detector apparatus, to which the method can be applied is also described.
GB1407747.3A 2011-11-23 2012-11-23 Detector apparatus and method Active GB2509673B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1120166.2A GB201120166D0 (en) 2011-11-23 2011-11-23 Detector apparatus and method
PCT/GB2012/052909 WO2013076505A1 (en) 2011-11-23 2012-11-23 Detector apparatus and method

Publications (3)

Publication Number Publication Date
GB201407747D0 GB201407747D0 (en) 2014-06-18
GB2509673A true GB2509673A (en) 2014-07-09
GB2509673B GB2509673B (en) 2020-11-11

Family

ID=45475559

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB1120166.2A Ceased GB201120166D0 (en) 2011-11-23 2011-11-23 Detector apparatus and method
GB1407747.3A Active GB2509673B (en) 2011-11-23 2012-11-23 Detector apparatus and method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1120166.2A Ceased GB201120166D0 (en) 2011-11-23 2011-11-23 Detector apparatus and method

Country Status (2)

Country Link
GB (2) GB201120166D0 (en)
WO (1) WO2013076505A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218208A (en) * 1990-12-11 1993-06-08 L'etat Francais Device for measuring radioactive contamination of a body
WO2002031536A2 (en) * 2000-10-11 2002-04-18 University Of Southampton Gamma-ray spectrometry
EP1659419A1 (en) * 2004-11-23 2006-05-24 Bil Solutions Limited Method and apparatus for monitoring a volume of waste for radioactive material and correcting the monitored result for geometry and attenuation
GB2445578A (en) * 2007-01-15 2008-07-16 Symetrica Ltd Radioactive isotope identification
WO2009082587A2 (en) * 2007-11-27 2009-07-02 Canberra Industries, Inc. Hybrid radiation detection system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218208A (en) * 1990-12-11 1993-06-08 L'etat Francais Device for measuring radioactive contamination of a body
WO2002031536A2 (en) * 2000-10-11 2002-04-18 University Of Southampton Gamma-ray spectrometry
EP1659419A1 (en) * 2004-11-23 2006-05-24 Bil Solutions Limited Method and apparatus for monitoring a volume of waste for radioactive material and correcting the monitored result for geometry and attenuation
GB2445578A (en) * 2007-01-15 2008-07-16 Symetrica Ltd Radioactive isotope identification
WO2009082587A2 (en) * 2007-11-27 2009-07-02 Canberra Industries, Inc. Hybrid radiation detection system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BERENSTEIN C A ET AL: "EXACT DECONVOLUTION FOR MULTIPLE CONVOLUTION OPERATORS-AN OVERVIEW, PLUS PERFORMANCE CHARACTERIZATIONS FOR IMAGING SENSORS", PROCEEDINGS OF THE IEEE, IEEE. NEW YORK, US, vol. 78, no. 4, 1 April 1990 (1990-04-01), pages 723-734, XP000138461, ISSN: 0018-9219, DOI: 10.1109/5.5481 *
SIEVERS P ET AL: "Bayesian deconvolution as a method for the spectroscopy of X-rays with highly pixelated photon counting detectors", JOURNAL OF INSTRUMENTATION, INSTITUTE OF PHYSICS PUBLISHING, BRISTOL, GB, vol. 7, no. 3, 9 March 2012 (2012-03-09), page P03003, XP020220436, ISSN: 1748-0221, DOI: 10 *

Also Published As

Publication number Publication date
GB201407747D0 (en) 2014-06-18
WO2013076505A1 (en) 2013-05-30
GB2509673B (en) 2020-11-11
GB201120166D0 (en) 2012-01-04

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