Author/Authors :
R.T. Newman، نويسنده , , William R. Lindsay، نويسنده , , K.P. Maphoto، نويسنده , , N.A. Mlwilo، نويسنده , , A.K. Mohanty، نويسنده , , D.G. Roux، نويسنده , , R.J. de Meijer، نويسنده , , I.N. Hlatshwayo، نويسنده ,
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 238U, 232Th and 40K 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 40K AC.
