title: Determination of soil, sand and ore primordial radionuclide concentrations by full-spectrum analyses of high-purity germanium detector spectra.
abstract: The full-spectrum analysis (FSA) method was used to determine primordial activity concentrations (ACs) in soil, sand and ore samples, in conjunction with a HPGe detector. FSA involves the least-squares fitting of sample spectra by linear combinations of (238)U, (232)Th and (40)K standard spectra. The differences between the FSA results and those from traditional windows analyses (using regions-of-interest around selected photopeaks) are less than 10% for all samples except zircon ore, where FSA yielded an unphysical (40)K AC.
authors: Environmental Radioactivity Laboratory, Physics Group, iThemba LABS, Somerset West 7129, South Africa. newman@tlabs.ac.za
authors: R T
authors: RT
authors: Newman
authors: R
authors: R
authors: Lindsay
authors: K P
authors: KP
authors: Maphoto
authors: N A
authors: NA
authors: Mlwilo
authors: A K
authors: AK
authors: Mohanty
authors: D G
authors: DG
authors: Roux
authors: R J
authors: RJ
authors: de Meijer
authors: I N
authors: IN
authors: Hlatshwayo