发明名称 |
RADIOACTIVITY INSPECTION DEVICE AND RADIOACTIVITY DETECTION METHOD |
摘要 |
PROBLEM TO BE SOLVED: To provide an accurate and inexpensive radioactivity inspection device and radioactivity inspection method having high detection efficiency, using a plastic scintillation detector.SOLUTION: A radioactivity inspection device comprises: a plastic scintillator 10; a photomultiplier 20; a multichannel analyzer 30; and a computer 40 comprising a region setting unit 41 for setting a channel range for characterizing radioactive cesium as a cesium region and a channel range for characterizing radioactive potassium as a potassium region, a correction factor computing unit 42 for obtaining a correction factor (α=(nk-nb)/(nkk-nbk)), a conversion factor computing unit 43 for obtaining a conversion factor (K=C*W/nth), and a radioactivity quantity computing unit 44 for obtaining a radioactivity quantity (D=nt*K/W') of radioactive cesium per unit mass of a sample using the correction factor and the conversion factor. This configuration enables an accurate and inexpensive radioactivity inspection device and radioactivity inspection method having high detection efficiency to be provided. |
申请公布号 |
JP2014159970(A) |
申请公布日期 |
2014.09.04 |
申请号 |
JP20130029766 |
申请日期 |
2013.02.19 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES MECHATRONICS SYSTEMS LTD;SEIKO EG&G CO LTD |
发明人 |
AOKI HISAO;YAMANISHI YOSHIMI;HIRAYAMA SATOSHI;SAKUMA SHOICHI |
分类号 |
G01T1/20;G01T1/17;G01T1/36 |
主分类号 |
G01T1/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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