title: Correction for radon distribution in solid/liquid and air phases in gamma-ray spectrometry.
abstract: The effect of radon diffusion and distribution between a (226)Ra matrix and the top air gap inside sample containers for gamma-ray spectrometry was studied. Containers filled at almost 100% or just 70% of total capacity yielded correction factors of about 7% and 20% respectively. Applying these correction factors allowed activity values calculated from (226)Ra or radon decay products to agree within 2%.
authors.affiliation: ENEA, Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti (INMRI), Centro Ricerche Casaccia, I-00123 Rome, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Carconi
authors.forename: F
authors.initials: F
authors.lastname: Cardellini
authors.forename: M L
authors.initials: ML
authors.lastname: Cozzella
authors.forename: P
authors.initials: P
authors.lastname: De Felice
authors.forename: A
authors.initials: A
authors.lastname: Fazio
mesh_terms: D000388:Air; D000465:Algorithms; D016477:Artifacts; D006207:Half-Life; D038622:Internationality; D044367:Phase Transition; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods / Q000592:standards*; D011886:Radon / Q000032:analysis* / Q000737:chemistry / Q000592:standards*; D012015:Reference Standards; D012016:Reference Values; D012996:Solutions; D013051:Spectrometry, Gamma / Q000379:methods* / Q000592:standards*
chemical_list: D012996:Solutions; D011886:Radon