JPS61265593A - Method for measuring radioactivity - Google Patents

Method for measuring radioactivity

Info

Publication number
JPS61265593A
JPS61265593A JP10619885A JP10619885A JPS61265593A JP S61265593 A JPS61265593 A JP S61265593A JP 10619885 A JP10619885 A JP 10619885A JP 10619885 A JP10619885 A JP 10619885A JP S61265593 A JPS61265593 A JP S61265593A
Authority
JP
Japan
Prior art keywords
α
measurement
container
reaction
rays
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
JP10619885A
Inventor
Akira Sano
Original Assignee
Nippon Atom Ind Group 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 Nippon Atom Ind Group Co Ltd filed Critical Nippon Atom Ind Group Co Ltd
Priority to JP10619885A priority Critical patent/JPS61265593A/en
Publication of JPS61265593A publication Critical patent/JPS61265593A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To measure radioactivity with high accuracy, by receiving a measuring specimen discharging α-rays in gas or liquid containing a light element having high probability generating (α, n) reaction and converting α-rays to neutron by (α, n) reaction when α-rays were discharged from a radiation source.
CONSTITUTION: A specimen 11 is received in a container 12 and hermetically sealed by a lid 12A. In this state, measurement (first measurement) for counting a neutron is performed by using a 3He neutron detector 19. The output of a preamplifier 23 is amplified by a main amplifier and measured by a counter through the peak analyser of a post-stage. After measurement, air in the container 12 is exhausted by an exhaust pipe 15. Next, gas containing a light element having high probability generating (α, n) reaction is injected in the container 12 by a suction pipe 14. In this state, BF3 gas is flowed even into the container 12 of the specimen 11 and the measurement (second measurement) for counting the neutron generated by (α, n) reaction between an α-ray radiation nuclide and each of elements B, F is performed. α-radioactive rays can be evaluated on the basis of the count value obtained by subtracting the first measured value from the second measured value.
COPYRIGHT: (C)1986,JPO&Japio
JP10619885A 1985-05-20 1985-05-20 Method for measuring radioactivity Pending JPS61265593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10619885A JPS61265593A (en) 1985-05-20 1985-05-20 Method for measuring radioactivity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10619885A JPS61265593A (en) 1985-05-20 1985-05-20 Method for measuring radioactivity

Publications (1)

Publication Number Publication Date
JPS61265593A true JPS61265593A (en) 1986-11-25

Family

ID=14427474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10619885A Pending JPS61265593A (en) 1985-05-20 1985-05-20 Method for measuring radioactivity

Country Status (1)

Country Link
JP (1) JPS61265593A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038531A1 (en) * 1997-02-26 1998-09-03 British Nuclear Fuels Plc Monitoring and/or detecting alpha-radiation sources
US7649183B2 (en) 2004-12-01 2010-01-19 Vt Nuclear Services Limited Apparatus for monitoring an item for radioactive material on or associated with the item

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038531A1 (en) * 1997-02-26 1998-09-03 British Nuclear Fuels Plc Monitoring and/or detecting alpha-radiation sources
US6455859B1 (en) 1997-02-26 2002-09-24 British Nuclear Fuels Plc Selective flow path alpha particle detector and method of use
US7649183B2 (en) 2004-12-01 2010-01-19 Vt Nuclear Services Limited Apparatus for monitoring an item for radioactive material on or associated with the item

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