|
|||||
|
|
Determination of soil, sand and ore primordial radionuclide concentrations by full-spectrum analyses of high-purity germanium detector spectra |
|
| Authors: | R.T. Newman R. Lindsay K.P. Maphoto N.A. Mlwilo A.K. Mohanty D.G. Roux R.J. de Meijer I.N. Hlatshwayo |
| Affiliation: | aEnvironmental Radioactivity Laboratory, Physics Group, iThemba LABS, P.O. Box 722, Somerset West 7129, South Africa bDepartment of Physics, University of the Western Cape, P. Bag X17, Bellville 7537, South Africa cNECSA, P.O. Box 582, Pretoria 0001, South Africa dStichting EARTH, Weehorsterweg 2, 9321 XS Peize, The Netherlands |
| 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. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |