An investigation of the repeatability of calibration factors in gamma-ray spectrometry of geological materials

dc.contributor.authorMustapha, A.O.
dc.contributor.authorPatel, J. P.
dc.contributor.authorRathore, I. V. S.
dc.contributor.authorHashim, N. O.
dc.contributor.authorOtwoma, D.
dc.date.accessioned2014-06-02T06:58:26Z
dc.date.available2014-06-02T06:58:26Z
dc.date.issued2004-01
dc.descriptiondx.doi.org/10.1016/j.apradiso.2003.09.008en_US
dc.description.abstractA 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.en_US
dc.identifier.citationJournal of Applied Radiation and Isotopes: Volume 60, Issue 1, Pages 79–82en_US
dc.identifier.issn0969-8043
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/9734
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectGamma spectrometeren_US
dc.subjectCalibrationen_US
dc.subjectIAEA reference materialsen_US
dc.subjectNaturally occurring radionuclidesen_US
dc.subjectAnalysis of varianceen_US
dc.titleAn investigation of the repeatability of calibration factors in gamma-ray spectrometry of geological materialsen_US
dc.typeArticleen_US
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