GB1171173A - Improvements in or relating to Instruments for Radiation Measurement - Google Patents

Improvements in or relating to Instruments for Radiation Measurement

Info

Publication number
GB1171173A
GB1171173A GB40494/66A GB4049466A GB1171173A GB 1171173 A GB1171173 A GB 1171173A GB 40494/66 A GB40494/66 A GB 40494/66A GB 4049466 A GB4049466 A GB 4049466A GB 1171173 A GB1171173 A GB 1171173A
Authority
GB
United Kingdom
Prior art keywords
radiation
output
source
photo
passing
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
GB40494/66A
Inventor
Brian Jerrold Jordan
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.)
Saunders Roe and Nuclear Enterprises Ltd
Saunders Roe Developments Ltd
Original Assignee
Saunders Roe and Nuclear Enterprises Ltd
Saunders Roe Developments 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 Saunders Roe and Nuclear Enterprises Ltd, Saunders Roe Developments Ltd filed Critical Saunders Roe and Nuclear Enterprises Ltd
Priority to GB40494/66A priority Critical patent/GB1171173A/en
Priority to NL6711824A priority patent/NL6711824A/xx
Priority to BE703682D priority patent/BE703682A/xx
Publication of GB1171173A publication Critical patent/GB1171173A/en
Expired 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
    • G01N23/02—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
    • G01N23/16—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 the material being a moving sheet or film

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

1,171,173. Photo-electric absorption measurement. SAUNDERS - ROE DEVELOPMENTS Ltd. Sept.8, 1967 [Sept. 9, 1966], No. 40494/66. Heading G1A. In a radiation absorption measurement where radiation after passing through a sample and a reference radiation is alternately received by a detecting system, the mean value of the varying output of the system is maintained constant by adjustment of the amplification of the detector system so that the alternating component of the output, which is the difference between the reference radiation and the attenuated radiation, is corrected for inherent drift in the amplification system and for decay in the sources of radiation and is also linearly related to the parameter of the sample causing an exporential attenuation of the radiation. As shown in Fig. 1, # or γ radiation from source 1 after passing through a pipe 3 carrying petroleum irradiates a phosphor 11. A reference source 6 of similar radiation is mounted upon the rotating shaft 5 of a shutter 8, so that a photo-multiplier 13 alternately receives light scintillations from phosphor 11 and light scintillations from another phosphor 12 when irradiated by the rotating reference radiation source 6. The photo-multiplier output is amplified at 14 and 15 and the mean value of the amplified signal appears at the low pan filter 21 to be compared with a reference voltage 22. The difference voltage is amplified at 20 to supply indirectly heated thermistors 18, 19 in a feed-back path of amplifier 15 to thereby maintain the mean value of the output of amplifier 20 at the value of reference source 22. The alternating component of this output appears at capacitor 23 and is rectified synchronously with shutter 8. This output is linearly proportional to the parameter of the petroleum causing an exponential attenuation of the radiation passing there through.
GB40494/66A 1966-09-09 1966-09-09 Improvements in or relating to Instruments for Radiation Measurement Expired GB1171173A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB40494/66A GB1171173A (en) 1966-09-09 1966-09-09 Improvements in or relating to Instruments for Radiation Measurement
NL6711824A NL6711824A (en) 1966-09-09 1967-08-29
BE703682D BE703682A (en) 1966-09-09 1967-09-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40494/66A GB1171173A (en) 1966-09-09 1966-09-09 Improvements in or relating to Instruments for Radiation Measurement

Publications (1)

Publication Number Publication Date
GB1171173A true GB1171173A (en) 1969-11-19

Family

ID=10415186

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40494/66A Expired GB1171173A (en) 1966-09-09 1966-09-09 Improvements in or relating to Instruments for Radiation Measurement

Country Status (3)

Country Link
BE (1) BE703682A (en)
GB (1) GB1171173A (en)
NL (1) NL6711824A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027382A1 (en) * 1979-10-15 1981-04-22 Technicare Corporation A computerised tomographic scanning apparatus including a current amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027382A1 (en) * 1979-10-15 1981-04-22 Technicare Corporation A computerised tomographic scanning apparatus including a current amplifier

Also Published As

Publication number Publication date
BE703682A (en) 1968-02-01
NL6711824A (en) 1968-03-11

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