On the feasibility of determining the 230 Th activity in minerals without the addition of a Th radiotracer

The necessity of measuring the radioactivity of the Тh nuclide arises when attempting to solve a number of geochemical or geochronological problems based on the effects of radioactive disequilibrium in the U series. It is the authors' opinion that the use of the traditional α- and β-emitters of...

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Bibliographic Details
Published inApplied radiation and isotopes Vol. 133; p. 57
Main Authors Hosseinpour Khanmiri, Mohammad, Bogdanov, Roman V
Format Journal Article
LanguageEnglish
Published England 01.03.2018
Subjects
Disequilibrium in the U series
Registration coefficient
Radiotracer
α-and β-emitters of thorium
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Summary:The necessity of measuring the radioactivity of the Тh nuclide arises when attempting to solve a number of geochemical or geochronological problems based on the effects of radioactive disequilibrium in the U series. It is the authors' opinion that the use of the traditional α- and β-emitters of thorium as a radiotracer in order to determine the activity of Тh leads to various inconveniences and difficulties of a technical nature. The authors recommend using the Тh isotope contained in the study sample as the simplest and most natural way of measuring the chemical yield of the targeted nuclide ( Тh). A sequence of radio-analytical procedures is proposed that will provide a correct assessment of the radioactivity of Тh. In addition, a specific example and an evaluation of the accuracy of the proposed methodology are presented, using actual experimental data.
ISSN:1872-9800