Influence of various factors on the value of thoron emanation coefficient

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 330; no. 3; pp. 1583 - 1588
• Main Authors: Danyłec, Karolina, Mazur, Jadwiga, Kozak, Krzysztof, Grządziel, Dominik, Mroczek, Mariusz
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-12-2021; Springer; Springer Nature B.V
• Subjects: Chemical properties; Chemistry; Chemistry and Materials Science; Coefficients; Diagnostic Radiology; Emission; Grain size; Hadrons; Heavy Ions; Inorganic Chemistry; Measuring instruments; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Radium; Grain size; Thoron emanation coefficient; Thoron; Powder sandwich technique; Radon
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-021-07967-7

The “powder sandwich” method was adapted to the measuring equipment at the Laboratory of Radiometric Expertise, IFJ PAN (Kraków, Poland). The versatility of the method has been confirmed. The values of thoron emanation coefficients (f) for 16 materials have been determined. It has been found that the value of thoron emanation coefficient is not directly dependent on the concentration of
224
Ra, other factors are also important, e.g. the size of the grains, the inter-grain space and the distribution of radium atoms in the grain. The influence of the grain size on the value of thoron emanation coefficient was investigated.