JPS5763440A - Moisture measuring method - Google Patents

Moisture measuring method

Info

Publication number
JPS5763440A
JPS5763440A JP55137666A JP13766680A JPS5763440A JP S5763440 A JPS5763440 A JP S5763440A JP 55137666 A JP55137666 A JP 55137666A JP 13766680 A JP13766680 A JP 13766680A JP S5763440 A JPS5763440 A JP S5763440A
Authority
JP
Japan
Prior art keywords
gamma
ray
neutron
converted
phosphor
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
JP55137666A
Other languages
Japanese (ja)
Inventor
Hiroshi Tominaga
Nobuo Wada
Noboru Tachikawa
Shoichi Horiuchi
Yoshihiro Sase
Masayoshi Tosa
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.)
NIPPON GENSHIRYOKU KENKYUSHO
Hitachi Ltd
Japan Atomic Energy Agency
Original Assignee
NIPPON GENSHIRYOKU KENKYUSHO
Hitachi Ltd
Japan Atomic Energy Research Institute
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 NIPPON GENSHIRYOKU KENKYUSHO, Hitachi Ltd, Japan Atomic Energy Research Institute filed Critical NIPPON GENSHIRYOKU KENKYUSHO
Priority to JP55137666A priority Critical patent/JPS5763440A/en
Publication of JPS5763440A publication Critical patent/JPS5763440A/en
Pending 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
    • G01N23/12—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 flowing fluid or a flowing granular solid

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

PURPOSE:To measure specimens of smaller to large dimension and eliminate influence of filling coefficient and voids of measured specimens, by a method wherein radioistope to generate neutron and gamma-ray and a phosphor in a detecting element are employed. CONSTITUTION:Neutron and gamma-ray which emanate from a radioisotope 2 in a radiation device 3 are irradiated onto a specimen 1 to be measured, and the neutron and gamma-ray whicn penetrate the specimen are entered in a phosphor 5A. Light which emanates from the phosphor 5A is converted into electrons by a photomultiplier 5B, and the converted electron are led through a preamplifier 6 into delay circuits 7, 9 and attenuator circuits 8, 10. Output of comparators 11, 12 is converted by a synthesizing circuit 13 into plus width signal corresponding to time difference, and further converted by a conversion circuit 14 into crest value. The output is subjected to crest analyzing in a crest analyzing circuit 15 and separated into spectrum of neutron component and gamma-ray component, and correction of filling coefficient and voids is performed in a correction circuit 16 thereby moisture is determined. In this constitution, moisture can be measured accurately without limiting the amount of specimen.
JP55137666A 1980-10-03 1980-10-03 Moisture measuring method Pending JPS5763440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55137666A JPS5763440A (en) 1980-10-03 1980-10-03 Moisture measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55137666A JPS5763440A (en) 1980-10-03 1980-10-03 Moisture measuring method

Publications (1)

Publication Number Publication Date
JPS5763440A true JPS5763440A (en) 1982-04-16

Family

ID=15203970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55137666A Pending JPS5763440A (en) 1980-10-03 1980-10-03 Moisture measuring method

Country Status (1)

Country Link
JP (1) JPS5763440A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219445A (en) * 1982-06-16 1983-12-20 Aloka Co Ltd Method of and apparatus for measuring percentage of moisture content by gamma ray
JPS59154347A (en) * 1983-02-23 1984-09-03 Soiru & Lock Eng Kk Measuring method of water content
US4884288A (en) * 1985-12-31 1989-11-28 Commonwealth Scientific And Industrial Research Organization Neutron and gamma-ray moisture assay

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5214474A (en) * 1975-06-24 1977-02-03 Us Energy Method of detecting and discriminating neutron and gamma ray
JPS5310492A (en) * 1976-05-19 1978-01-30 Kernenergieverwert Ges Fuer Method and apparatus for obtaining volume percentage of ternary mixture system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5214474A (en) * 1975-06-24 1977-02-03 Us Energy Method of detecting and discriminating neutron and gamma ray
JPS5310492A (en) * 1976-05-19 1978-01-30 Kernenergieverwert Ges Fuer Method and apparatus for obtaining volume percentage of ternary mixture system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219445A (en) * 1982-06-16 1983-12-20 Aloka Co Ltd Method of and apparatus for measuring percentage of moisture content by gamma ray
JPS6359101B2 (en) * 1982-06-16 1988-11-17
JPS59154347A (en) * 1983-02-23 1984-09-03 Soiru & Lock Eng Kk Measuring method of water content
US4884288A (en) * 1985-12-31 1989-11-28 Commonwealth Scientific And Industrial Research Organization Neutron and gamma-ray moisture assay

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