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METHODS FOR THE REALIZATION OF RADIOACTIVE STANDARDS AND FOR THE ENVIRONMENTAL RADIOACTIVITY MEASUREMENT

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Author(s): ANDREI ANTOHE | BEATRICE NEACSU | ANA STOCHIOIU | AURELIAN LUCA | MARIA SAHAGIA

Journal: Journal of Science and Arts
ISSN 1844-9581

Volume: 15;
Issue: 2;
Start page: 231;
Date: 2011;
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Keywords: radioactive standard sources | environmental radioactivity measurement.

ABSTRACT
The radionuclide metrology assures: the realization, the conservation and the transmission of the “activity” standards, in various fields of measurement, environmental radioactivity characterization being included. The Radionuclide Metrology Laboratory (RML), IFIN-HH, usually prepares radioactivity standards (reference materials), consisting from: standard solutions, point and large area alpha and beta standard sources, and gamma volume standard sources used for the measurement of environmental samples and for the calibration of surface contamination monitors.The most important measurement methods used in the environmental radioactivity measurements, developed in IFIN-HH, are: gross alpha and gross beta measurements and gamma-ray spectrometry measurements. The choice of the adequate method depends on several factors, such as: type of emitted radiation, existence of a single or mixture of radionuclides, physical shape of the matrix.The authors describe the methods for the realization of standard sources used for the calibration of equipment used in such monitoring and methods for the environmental radioactivity measurement.
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