Comparative study of two drying techniques used in radioactive source preparation: Freeze-drying and evaporation using hot dry nitrogen jets

Autor:	M.-G. Iroulart, Christophe Bobin, D. Lacour, I. Le Garrérès, S. Morelli, T. Branger, Marie-Christine Lépy, Johann Plagnard
Rok vydání:	2008
Předmět:	Freeze-drying Radiation Becquerel chemistry Radionuclide metrology Radioactive source Metallurgy Analytical chemistry Evaporation chemistry.chemical_element Coincidence counting Mass spectrometry Nitrogen
Zdroj:	Applied Radiation and Isotopes. 66:685-690
ISSN:	0969-8043
Popis:	Quantitative solid sources are used widely in the field of radionuclide metrology. With the aim to improve the detection efficiency for electrons and x-rays, a comparative study between two source drying techniques has been undertaken at LNE-Laboratoire National Henri Becquerel (LNE-LNHB, France). In this paper, freeze-drying using commercial equipment is compared with a system of drying using hot jets of nitrogen developed at Institute for Reference Materials and Measurements (IRMM, Belgium). In order to characterize the influence of self-absorption, the detection efficiencies for 51 Cr sources have been measured by coincidence counting and photon spectrometry.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f064dc823f233f6e902835162445ff78 https://doi.org/10.1016/j.apradiso.2008.02.063 Zobrazit plný text záznamu Full Text from ScienceDirect