RADIOACTIVE RAY MEASUREMENT DEVICE, RADIOACTIVE RAY MEASUREMENT METHOD AND COMPUTATION DEVICE

Japanese Patent JP2017058162

A

PROBLEM TO BE SOLVED: To secure sufficient overlapping of two types of measurement methods of a pulse counting method and a Campbell method.SOLUTION: A radioactive ray measurement device 100 comprises: a radioactive detector 1; a pre-amplifier 2 that amplifies a pulse signal to be output from the radioactive detector 1; a pulse count unit 12 that counts the pulse signal amplified by the pre-amplifier 2 over a measurement time T to output a counting rate; a dead time compensation unit 13 that corrects an error due to a dead time with respect to the counting rate to calculate a post-corrected counting rate; a dead time evaluation unit 20 that receives the counting rate output by the pulse counting unit 12, and the post-corrected counting rate calculated by the dead time correction unit 13 to output a modification value of the dead time; a Campbell method measurement unit 11 that measures the output signal of the radioactive ray detector 1 amplified by the pre-amplifier 2 by a Campbell method; and a signal selection unit 14 that compares the Campbell method counting rate with the post-corrected counting rate, and outputs a value nearer to a linear characteristic as a value of the counting rate.SELECTED DRAWING: Figure 1

ITO DAIJIRO
KONO SHIGEHIRO
KUMAGAI TAKESHI

JP2015181107A

March 23, 2017

September 14, 2015

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TOSHIBA CORP

G01T1/17

JPS6488179A	1989-04-03
JP2015517724A	2015-06-22
JP2015040720A	2015-03-02
JPS5991384A	1984-05-26

US4835703A

1989-05-30

Patent Business Corporation Sakura International Patent Office

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