An investigation of the repeatability of calibration factors in gamma-ray spectrometry of geological materials
Date
2004Author
Mustapha, AO
Patel, JP
Rathore, IV
Hashim, NO
Otwoma, D
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
A NaI(Tl)-based gamma spectrometer for the analysis of geological materials was calibrated using the IAEA reference materials RGU-1, RGTH-1 and RGK-1. To simulate typical geological samples, two additional standards were prepared from aliquots of the three reference materials. The reproducibility of the instrument calibration factors (CFs) was tested by repeated measurements of the pure IAEA reference materials and the mixed samples in a reproducible counting geometry. The results were analysed using a two-way classification analysis of variance; it was found that the variance in the CFs is significantly higher between standards than it is between measurements. Allowance should be made for this when estimating uncertainties in measurements with the NaI(Tl) spectrometers.
URI
http://www.ncbi.nlm.nih.gov/pubmed/14687639http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/45187
Citation
Mustapha AO, Patel JP, Rathore IV et al (2004). An investigation of the repeatability of calibration factors in gamma-ray spectrometry of geological materials. Appl Radiat Isot. Jan;60(1):79-82.Publisher
Department of Physics, University of Nairobi