In spite of the air ventilation, radon background fluctuation effect on the low level activity measurement was observed. 20% efficiency detector measured activity discrepancies were 5.7% for 214Pb, 8.7% for 214Bi and 5.8% for 226Ra. 150% efficiency detector measured activity discrepancies were 13.8% for 214Pb, 11.5% for 214Bi and 12.7% for 226Ra.
📌 3 Key Takeaways
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Objective & Hypothesis:In this study, radon background fluctuation effect on the measurement of 214Pb, 214Bi and 226Ra low level activity concentrations were investigated in ventilated laboratory.
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Key Findings & Data:For this purpose, detectors which had 150% and 20% efficiencies were used.
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Conclusion & Impact:In spite of the air ventilation, radon background fluctuation effect on the low level activity measurement was observed. 20% efficiency detector measured activity discrepancies were 5.7% for 214Pb, 8.7% for 214Bi and 5.8% for 226Ra. 150% efficiency detector measured activity discrepancies were 13.8% for 214Pb, 11.5% for 214Bi and 12.7% for 226Ra.
In this study, radon background fluctuation effect on the measurement of 214Pb, 214Bi and 226Ra low level activity concentrations were investigated in ventilated laboratory. For this purpose, detectors which had 150% and 20% efficiencies were used. In spite of the air ventilation, radon background fluctuation effect on the low level activity measurement was observed. 20% efficiency detector measured activity discrepancies were 5.7% for 214Pb, 8.7% for 214Bi and 5.8% for 226Ra. 150% efficiency detector measured activity discrepancies were 13.8% for 214Pb, 11.5% for 214Bi and 12.7% for 226Ra.
AĞUŞ, Y. (2017). Effect of the Radon Background Fluctuation on the Low Activity Measurement of the <sup>214</sup>Pb, <sup>214</sup>Bi and <sup>226</sup>Ra. Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 21 - Sayı: 2, 345–349. https://ajindex.com/articles/701196
United Nations Scientific Committee on the Effect of Atomic Radiation (UNSCEAR), 2000. Exposures from natural sources, UNSCEAR
International Atomic Energy Agency (IAEA), 2005. Naturally occuring radioactive materials (NORM IV), IAEA-TECDOC-1472
Gilmore, Gordon R., 2008. Practical Gamma-Ray Spectrometry-2nd Edition
Bossew, P.,2005. A very long-term HPGe-background gamma spectrum. Appl. Radiat. Isot. 62, 635–644
Dragounován L., Rulík P., 2013. Low level activity determination by means of gamma spectrometry with respect to the natural background fluctuation. Applied Radiation and Isotopes, 81, 123–127
Radulescu I. Blebea-Apostu A.M., Margineanu R.M., Mocanu N., 2013. Background radiation reduction for a high-resolution gamma-ray spectrometer used for environmental radioactivity measurements. Nuclear Instruments and Methods in Physics Research, A 715, 112–118
Mauring A., Gäfvert T., T. B., Aleksandersen, 2014. Implications for analysis of 226Ra in a low-level gamma spectrometry laboratory due to variations in radon background levels. Applied Radiation and Isotopes 94, 54–59 [8] Currie,L.A.,1968. Limits for qualitative detection and quantitative determination, application to radiochemistry. Anal.Chem., 40(3), 586–593.