| 摘要 |
PROBLEM TO BE SOLVED: To provide a preparation method of measuring sample using simple pretreatment and a measurement analysis method for quickly and efficiently measuring a large number of samples, including U- and Th-series radioactive nuclides. SOLUTION: To quantitateα-ray emitting nuclides included in a sample extracted from radioactive wastes or the like, the thickness of the measuring sample is set to be sufficiently larger than the range ofα-rays, and Rn gas and its daughter nuclide are confined to be within the sample as a solidα-ray measuring sample, in whichα-rays emission nuclides are uniformly distributed. The identification and quantification of theα-rays emission nuclides uses a method which determines the stopping power of the sample with respect toα-rays and determines from anα-ray spectrum measured by a Si-semiconductor detector. COPYRIGHT: (C)2007,JPO&INPIT
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