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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:51 |
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Conference: Bucharest University Faculty of Physics 2016 Meeting
Section: Atomic and Molecular Physics. Astrophysics. Applied Nuclear Physics
Title:
THE SPATIAL DISTRIBUTION OF NATURAL AND ARTIFICIAL RADIONUCLIDES ON A SMALL PLOT FROM DOBROGEA
Authors:
Georgian-Viorel TOBOSARU(1), Romul MĂRGINEANU(2)
Affiliation:
1) University of Bucharest, Faculty of Physics,P.O.BOX MG-11
2) Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Bucharest-Magurele, Romania
E-mail
viorel.tobosaru@nipne.ro
Keywords:
Gamma Spectrometry, Radioactivity, Cs137, Murfatlar, Shapiro-Wilk test
Abstract:
Gamma Spectrometry is one of the most useful method for monitoring the environmental radioactivity. Having a quantity and quality expertise about radioisotopes in nature is very important especially in the framework of the nuclear disasters like Chernobyl or Fukushima. In Romania measurements were made, before and after the Chernobyl nuclear accident, in regions of interest like Dobrogea, and areas along the Danube River.
In this work, the environmental radioactivity from Murfatlar is presented. There were determined concentrations of natural radionuclides like K40, Ra226, Ac228, and artificial radionuclides Cs137 from samples of soil collected from a viticulture area, using high resolution gamma spectrometry measurement in the Underground Laboratory from Slanic-Prahova. This work contains also comparisons with other measurements, the spatial distribution of natural and artificial radionuclides and the Shapiro–Wilk test for studying how the data are distributed. The results of the test show that for Cs137, K40 and Ac228 the hypothesis of having normal distributions is rejected, while for Ra226 the same hypothesis can not be refuted.
References:
[1] Mariana Claudia CRUCERU, „Termoluminescența Rocilor Naturale. Studiu de Caz: Sarea Gemă”, Bucureşti 2014
[2] N. Paunescu, D. Galeriu, R. Margineanu, A. Iorgulescu, “Environmental Radioactivity In Romania Danube River Area During 1986-1990”, Journal of Radloanalytlcal and Nuclear Chemistry, Articles, VoL 163, No. 2 (1992) 289-299
[3] R. Margineanu, Niculina Paunescu,D. Galeriu, N. Mocanu, Monica Cotarlea, „Environmental Radioactivity In The Preoperational Period Of Cernavoda Npp”, Romanian Journal of Physics 43/3-4., 1998
[4] Mihaela Sin, “Bazele fizicii nucleare, îndrumător de laborator “, Ed. Univ. din Bucureşti, 2003
[5] Nafaa Reguigui, „Gamma Ray Spectrometry”, Practical Information 2006
[6] Ian Rittersdorf, „Gamma Ray Spectroscopy”, Nuclear Engineering & Radiological Sciences, 2007
[7] Knoll G. F. – Radiation Detection and Measurement (Third Edition), John
Wiley&Sons, ISBN: 0471073385, 1999
[8] Gilmore G., Practical Gamma Ray Spectrometry – 2nd Edition, 2008, John
Wiley&Sons, Ltd. ISBN:978-0-470-86196-7
Acknowledgement:
This work was supported by the Romanian National Authority for Scientific Research Project No. PN-16 42 02 03.
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