A Trial Method of Determining Uranium and Thorium Content in Rocks by the Radioactive Measurements (2)
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概要
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<I>Some radioactive rocks or minerals show radioactive disequilibrium, because of the various geochemical processes to which they have been subjected. In any gain or loss of radioactive isotopes has occurred within the last period of about 10<SUP>6</SUP> years, the rock will be in a state of radioactive disequilibrium. In this case, the method described in the first report will be inadequate. For the purpose of finding a proper method for studying radioactive disequilibrium of samples, the methods using a radioscope, alpha-scintillation counter and gamma-ray spectrometer were re-examined. As the result, combination of gamma-ray spectrometry with alpha-ray counting by a scintillation counter was found to be appropriate for the purpose.</I>
- 社団法人 日本アイソトープ協会の論文
社団法人 日本アイソトープ協会 | 論文
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