Preparation of 137Cs-Loaded Silicotitanate Sealed Source and Standardization of Its Activity by DETEFF Code and Efficiency Transfer Concept

Autor:	M. A. Tawfic, M. A. El-Absy, H. E. Ramadan, M. Mostafa, S. A. Sadeek
Rok vydání:	2019
Předmět:	Epoxy adhesive Spectrometer Chemistry Radiochemistry Core (manufacturing) Physical and Theoretical Chemistry 010402 general chemistry 010403 inorganic & nuclear chemistry Hpge detector 01 natural sciences Calculation methods 0104 chemical sciences
Zdroj:	Radiochemistry. 61:741-747
ISSN:	1608-3288 1066-3622
DOI:	10.1134/s1066362219060171
Popis:	A 137Cs-loaded sealed source was prepared by contacting silicotitanate gel with a 137Cs solution at pH 7 for 48 h at 25°C, drying at 100°C for 24 h, placing as a radioactive core inside a central cylindrical cavity in a base Perspex half-disc, and assembling a top Perspex half-disc with the base one using epoxy adhesive. The sealed source prepared was standardized using a γ-ray spectrometer and various calculation methods including DETEFF code and different ways of the efficiency transfer concept. For higher accuracy, the effect of the HPGe detector contamination background at different measurement distances was studied. The prepared sealed source was found to have a 137Cs activity of 0.98 ± 0.06 kBq.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::92591e0269136700a42f2d882535d129 https://doi.org/10.1134/s1066362219060171 Zobrazit plný text záznamu Full text from SpringerLink