Improved non-destructive method for 90Sr activity determination in aqueous solutions using Monte Carlo simulation.
The development of new methods and improvements of existing methods for the specific activity determination of 90Sr and other distinct beta emitters has been of considerable interest. The reason for this interest is that the notably small number of methods that are able to meet all the set criteria, such as reliability of the results, measurement uncertainty and time, and minimum production of radioactive waste, as well as applicability to various samples with reference to their nature, geometry and composition. In this paper, two methods for rapid 90Sr activity determination based on Monte Carlo simulations are used, one for a Si semiconductor detector for beta spectrometric measurements and the other for the Geiger-Muller (GM) ionization probe. To improve the reliability of the measurement results, samples with high and low strontium activity solutions were prepared in the form of dry residues. The results of the proposed methodology were verified with a standard method using a liquid scintillation counter, and notably good agreements are achieved.
['Samardžić|Selena|S|', 'Milošević|Miodrag|M|', 'Todorović|Nataša|N|', 'Lakatoš|Robert|R|']
D001610:Beta Particles D003198:Computer Simulation D006801:Humans D009010:Monte Carlo Method D055848:Nuclear Power Plants D011834:Radiation Monitoring D011848:Radioactive Pollutants D011874:Radiometry D015203:Reproducibility of Results D012588:Scintillation Counting D012666:Semiconductors D012825:Silicon D013326:Strontium Radioisotopes D014875:Water Pollutants, Radioactive
Si semiconductor detector GM probe MCNP-5 simulation Sr activity