Abstract
The main goal of the current study was to determine the fluorine in the rock samples coal (SARM-18, SARM-19, and SARM-20), opal glass NBS91 and phosphate rock NBS694 using neutron activation analysis. Neutrons energy of 14 MeV used for irradiation was produced by bombardment of a water-cooled titanium tri-tide target with a beam of deuterons accelerated to a potential of 350 KV to develop a neutron flux (108 n⋅cm-2⋅s-1) on the sample at the neutron generator in the ECN (Netherlands Energy Research Foundation) Petten. This new approach contributes to the existing knowledge of fluorine measurement by the coincidence channels investigation of the positron energy with respect to decay time for each radionuclide element. The present study was designed to determine the fluorine by fast neutron through the reaction of F19 (n, 2n) F18. Interference was treated by irradiating the standard of these elements and reasonable selection of the decay time between the end of irradiation and beginning of counting time. The results of this method indicate that the concentration of fluorine is agreed fairly with literatures.
Highlights
Fluorine is a common element in the earth’s crust formed in minerals and rocks as fluorides
The new approach in activation analysis was designed to determine the fluorine in rock samples using a neutron generator
The experiment confirmed that fluorine could be measured using a technique based on coincidences 511 KeV peaks and the decay time of radionuclide
Summary
Fluorine is a common element in the earth’s crust formed in minerals and rocks as fluorides. It’s present in the composition of volcanic rocks and in some area in underground water, which is soluble element of water and it’s leaching from the host rock of high concentrations of natural origin (up to 6 ppm) [1]. The height concentration of fluorine content was measured in alluvial soils and the lowest amount found in cambisols soils that determined by M. Blagojević and Svetlana Antić-Mladenović, which was in the normal range of fluo-. How to cite this paper: Abdelbagi, A.M. (2016) Fluorine Assessment of Igneous Rocks by Neutron Activation Analysis. World Journal of Nuclear Science and Technology, 6, 140-146.
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