UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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Conference: Bucharest University Faculty of Physics 2016 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
DETERMINATION OF THE URANIUM ENRICHMENT RATIO BY USING THE GAMMA-RAY SPECTROMETRY METHOD


Authors:
Simona-Ionela ILIE


Affiliation:
1)University of Bucharest, Faculty of Physics, 405 Atomistilor S., RO-077125, P.O.B. MG-11, Magurele-Bucharest, Romania

2)Horia Hulubei National Institute for Physics and Nuclear Engineering, P.O.Box MG-6, 077125 Bucharest-Magurele, Romania


E-mail
simona.ilie@nipne.ro


Keywords:
Uranium enrichment, gamma-ray spectrometry, activity


Abstract:
In this work the gamma-ray spectrometry method for determination of uranium enrichment ratio is presented with a high purity Germanium (HPGe) semiconductor detector. The method was applied for measurement of a sample of small volume(powders of uranium) in a cylindrical recipient type sarpagan. The measurement was performed in close geometry (source placed directly on the detector). The two constituents of uranium were measured using the following gamma radiations: for 235U (185.72 keV, emission 57.0 %), and for 238U (1001.03 keV, emission 0.839 %) corresponding to the daughter 234mPa at equilibrium. The efficiency values of the system were determined with similar geometry standards. The final result was: the determined ratio of masses: M(235U)/M(238U) is not statistically different from the theoretical value 0.0072 % and it was concluded that the sample was of natural uranium.


References:

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39, Bucharest,2008.

[2] http://en.wikipedia.org/wiki/Uranium_enrichment (web page on the Internet)

[3] Y.Y. Ebaid, Use of gamma-ray spectrometry for uranium isotopic analysis in environmental samples, Rom.

Journ. Phys. Vol.55,Nos 1-2 P69-74, Bucharest,2010.

[4] HalukYÜcel, The applicability of MGA method for depleted and natural uranium isotopic analysis in the presence of actinides, Applied Radiation and Isotopies 65 (2007) 1269-1280.