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JPS57179772A - Measuring device of radiant ray - Google Patents

Measuring device of radiant ray

Info

Publication number
JPS57179772A
JPS57179772A JP6593281A JP6593281A JPS57179772A JP S57179772 A JPS57179772 A JP S57179772A JP 6593281 A JP6593281 A JP 6593281A JP 6593281 A JP6593281 A JP 6593281A JP S57179772 A JPS57179772 A JP S57179772A
Authority
JP
Japan
Prior art keywords
sample
measurement
count
during
value
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.)
Pending
Application number
JP6593281A
Other languages
Japanese (ja)
Inventor
Mitsuo Ishibashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6593281A priority Critical patent/JPS57179772A/en
Publication of JPS57179772A publication Critical patent/JPS57179772A/en
Pending legal-status Critical Current

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
    • G01T1/17—Circuit arrangements not adapted to a particular type of detector
    • G01T1/178—Circuit arrangements not adapted to a particular type of detector for measuring specific activity in the presence of other radioactive substances, e.g. natural, in the air or in liquids such as rain water

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

PURPOSE:To obtain the titled device with which the accuracy of measurement is greatly increased, by obtaining the measured value of a sample by subtracting the background value before and after the measurement of the sample or the averaged value of the count factor from the count value during the measurement of the sample. CONSTITUTION:The measured value of a sample is obtained by subtracting the background count value before and after the measurement of the sample or the averaged value of the count factor from the count value during the measurement of the sample. For instance, a radiation detector 13 is connected to an arithmetic circuit 16 via an amplifier 14 and a counter 15. At the same time, a control part 12 is also connected to the circuit 16. The part 12 delivers the timing control signals which are obtained right before the existence of a sample 11, during the existence of the sample and right after a moment when the sample does not exist any more respectively. The circuit 16 stores the count values in a certain period of time right before the measurement, during the measurement and right after the measurement of the sample 11 respectively into a memory based on the timing control signal given from the part 12. Then the background count value before and after the measurement of the sample is subtracted from the count value during the measurement of the sample.
JP6593281A 1981-04-30 1981-04-30 Measuring device of radiant ray Pending JPS57179772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6593281A JPS57179772A (en) 1981-04-30 1981-04-30 Measuring device of radiant ray

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6593281A JPS57179772A (en) 1981-04-30 1981-04-30 Measuring device of radiant ray

Publications (1)

Publication Number Publication Date
JPS57179772A true JPS57179772A (en) 1982-11-05

Family

ID=13301224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6593281A Pending JPS57179772A (en) 1981-04-30 1981-04-30 Measuring device of radiant ray

Country Status (1)

Country Link
JP (1) JPS57179772A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002263074A (en) * 2001-03-06 2002-09-17 Aloka Co Ltd Radiation measuring device and method
JP2013137237A (en) * 2011-12-28 2013-07-11 Hamamatsu Photonics Kk Distance meter
JP2014077747A (en) * 2012-10-12 2014-05-01 Shimadzu Corp Radiation screening test device
JP2016090228A (en) * 2014-10-29 2016-05-23 鹿島建設株式会社 Radioactive concentration measurement device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002263074A (en) * 2001-03-06 2002-09-17 Aloka Co Ltd Radiation measuring device and method
JP4627602B2 (en) * 2001-03-06 2011-02-09 アロカ株式会社 Radioactivity measuring device and radioactivity measuring method
JP2013137237A (en) * 2011-12-28 2013-07-11 Hamamatsu Photonics Kk Distance meter
US9151831B2 (en) 2011-12-28 2015-10-06 Hamamatsu Photonics K.K. Distance measurement device
JP2014077747A (en) * 2012-10-12 2014-05-01 Shimadzu Corp Radiation screening test device
JP2016090228A (en) * 2014-10-29 2016-05-23 鹿島建設株式会社 Radioactive concentration measurement device

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