UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-22 2:15
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Conference: Bucharest University Faculty of Physics 2015 Meeting


Section: Nuclear and Elementary Particles Physics II


Title:
Background radioactivity in Maneciu artificial reservoir


Authors:
Daniel STOIAN(1), Claudia GOMOIU(2), Romul MARGINEANU(2), Alexandru JIPA(1), Bogdan MITRICA(2), Ionel LAZANU(1)


Affiliation:
(1) Faculty of Physics, University of Bucharest, ROMANIA

(2) National Institute of Physics and Nuclear Engineering "Horia Hulubei" Bucharest-Magurele, ROMANIA


E-mail
tipan2002@yahoo.com


Keywords:
radioactivity background, rivers, reservoir, underground measurements, radioactive isotopes concentrations, nuclear accident memory


Abstract:
The present work is related to the efforts of knowledge of the distribution of the different radioactive isotopes in the environment and their possible influences of the flora and fauna in different regions, as well as on the quality of the different aliments. For this study the rivers that assure the water for artificial reservoir created in village Maneciu, Prahova County. From the entrances in reservoir of the two rivers, Teleajen and Telejenel, have been collected separated probes, up to the depth of 2 m. The probes have been separated with a step of 5 cm and have been prepared using standard procedures. Each probe – in sarpagan boxes with 100 g weight each – has been measured in the underground laboratory of NIPNE-HH from salt mine “Unirea” Slanic-Prahova. The high resolution spectroscopy experimental set-ups have been used, and the analysis of the experimental data has been done with Genie code from Canberra. The preliminary experimental results indicate the absence of the signals related to the major nuclear accidents. An interesting result is related to the behavior of the radioactive isotope of 40K. The associated activities increase with the increasing of the collection depth of the probe, being almost constant from 20 cm up to 65 cm, followed of a decreasing zone (65-85 cm). After this zone the values increase again attaining fast the same values as previously. The possible sources of such behavior are searched now.