TITLE:
Fluorine Assessment of Igneous Rocks by Neutron Activation Analysis
AUTHORS:
Abdelrazig Mohmed Abdelbagi
KEYWORDS:
Fluorine, New Method, Rock Samples, Neutron Generator, Activation Analysis, Spectroscopy
JOURNAL NAME:
World Journal of Nuclear Science and Technology,
Vol.6 No.3,
July
11,
2016
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.