18–23 Apr 2010
Casino Conference Centre
UTC timezone

Airborne and terrain γ spectrometry monitoring of natural and artificial radioactivity

20 Apr 2010, 11:45
1h 30m
Gallery (Casino Conference Centre)

Gallery

Casino Conference Centre

Reitenbergerova 4/95, Marianske Lazne, Czech Republic
Board: NAM.P35
Poster Nuclear Analytical Methods Poster Session - Nuclear Analytical Methods

Speakers

Dr Jiří Janda (NBC Defence Institute Vyškov, University of Defence CZ)Dr Petr Sládek (NBC Defence Institute Vyškov, University of Defence CZ)

Description

Airborne and terrain gamma-ray spectrometry are very effective methods for radiation control in environment, prospecting of radioactive contamination and localization of radioactive sources. These methods were proved in the system of the military radiation reconnaissance and radiation monitoring of the Czech Armed Forces. The IRIS-XP airborne gamma-ray spectrometer (4x4 liters NaI(Tl) crystals) and terrain gamma-ray spectrometer PGIS-128 (2 liters NaI(Tl) crystal), both produced by PICO Envirotec, Inc. Canada, were used for in-situ experiments. The helicopter Mi-17 was used for airborne measurement and the mobile devices and footpath variant were utilized for measurement on terrain surface. The semi-calibration of described systems was performed by comparison with semiconductor HPGe in-situ gamma-ray spectrometry on selected terrain locality. The spectra of natural radionuclides, such as K-40, Th-232 and U-238, were measured for these purposes. The radiation sources Cs-137 and Co-60 with activity from 100 MBq up to 3 GBq were used for measurement optimization and simulation of radiation events. The terrain gamma-ray spectrometry was also tested under the condition of real contamination in Chernobyl “exclusion zone”.

Primary author

Dr Petr Sládek (NBC Defence Institute Vyškov, University of Defence CZ)

Co-authors

Dr Jiří Janda (NBC Defence Institute Vyškov, University of Defence CZ) Dr Marcel Ohera (EnviMO Brno CZ)

Presentation materials

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