Instrumental neutron activation analysis of Moroccan geological samples using the k0-standardization method |
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Authors: | K Embarch M Bounakhla A Bajja M Ibnmajah R Jacimovic B Smodis A R Byrne A Sabir |
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Institution: | 1. Centre National de l'Energie des Sciences et des Techniques Nucléaires, 65 Rue Tansift Agdal, Rabat, Morocco 2. Faculty of Sciences, University Caddi Ayad, Marrakech, Morocco 3. Jozef Stefan' Institute University of Ljubljana Jamova 39, 1000, Ljubljana, Slovenia 4. Laboratoire de Physique Nucléaire Appliquée, Faculty of Sciences, University Ibn Tofa?l, Kénitra, Morocco
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Abstract: | Instrumental neutron activation analysis (INAA) for traces and major elements of several geological samples from “Zgounder”
region in Morocco was performed utilizing the k
0-standardization method. Sample irradiation has been done by the 250 kW Triga Mark II reactor at Jozef Stefan Institute in
Slovenia. Due to its accuracy, sensitivity and specificity, the k
0-standardization method is the most suitable method for non-destructive multielement analysis mainly for trace elements in
rocks. It requires an accurate knowledge of the parameters of the irradiation facilities and other instrumentation parameters.
It is an absolute standardization method, where the absolute nuclear data are replaced by a nuclear constant, the k
0-factor, determined experimentally with high accuracy. More than 40 elements were determined using about 30-second short and
about 7-hour long irradiations. Gamma-rays emitted from the irradiated samples have been determined by a high purity germanium
detector. Accuracy was assessed using the standard reference material AGV-1. This was less than 1% for major elements and
about 5% for traces.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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