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RADIOACTIVITY ABSOLUTE MEASUREMENT METHOD BY LIQUID SCINTILLATION, AND CALIBRATION METHOD OF RADIOACTIVITY MEASURING DEVICE

机译：液闪法绝对放射性测量方法及放射性测量装置的标定方法

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摘要

PROBLEM TO BE SOLVED: To experimentally determine calculation parameters which could not be experimentally determined before, to determine a radioactivity absolute value from an experimentation result, and to improve uncertainty of measurement of the radioactivity absolute value and also to improve uncertainty of calibration of a radioactivity measuring device by excluding fitting of apparent radioactivity.;SOLUTION: In a radioactivity measuring method by liquid scintillation in which nuclear species to be measured and a liquid scintillator are mixed to create a radiation source 10, which is measured by three optical detectors (photoelectron multipliers 20, 30 and 40), an evaluation index R_D indicative of a matching property between a theoretical calculation value and an experimental counting value is set on a plane on which one axis is assigned to counting efficiency or counting rates and the other axis is assigned to TDCR values (counting efficiency or counting rate, TDCR value), and a parameter (kB value) and a radioactivity absolute value A, indicating a degree of quenching, which minimize a difference between the theoretical calculation value and experimental counting value are determined through repetitive calculation using the evaluation index R_D.;COPYRIGHT: (C)2012,JPO&INPIT

机译：要解决的问题：通过实验确定以前无法通过实验确定的计算参数，从实验结果确定放射性绝对值，提高放射性绝对值测量的不确定度，并提高放射性校准的不确定性解决方案：在通过液体闪烁的放射性测量方法中，将要测量的核素和液体闪烁体混合以创建辐射源10，该辐射源由三个光学探测器（光电子倍增器）测量20、30和40），在分配了一个轴以进行计数效率或计数的平面上设置表示理论计算值与实验计数值之间的匹配特性的评估指标R _{D 率和另一轴分配给TDCR值（计数效率或计数率，TDCR通过使用评价指标R 进行重复计算，求出使理论计算值与实验计数值之差最小的表示淬火度的参数（kB值）和放射性绝对值A。 .;版权所有：（C）2012，JPO＆INPIT}

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公开/公告号JP2012047517A

专利类型
公开/公告日2012-03-08

原文格式PDF
申请/专利权人 NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL & TECHNOLOGY;NATL INST OF RADIOLOGICAL SCIENCES;KITASATO INSTITUTE;TOKYO METROPOLITAN GERIATRIC HOSPITAL AND INSTITUTE OF GERONTOLOGY;HITACHI ALOKA MEDICAL LTD;SHIMADZU CORP;
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申请/专利号JP20100188118
发明设计人 YOSHIMURA TOMOYUKI;SATO YASUSHI;ODA KEIICHI;HASEGAWA TOMOYUKI;MURAYAMA HIDEO;SATO TOMOHIKO;
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申请日2010-08-25
分类号G01T1/204;G01T1/161;G01T7/00;G01T1/185;
国家 JP
入库时间 2022-08-21 17:39:32

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