Estimation of the uncertainty components associated with the measurement of radionuclides in air filters using γ-ray spectrometry

Mass attenuation coefficients of soil and sediment samples using gamma energies from 46.5 to 1332 keV

“…McMahon et al (2004) calculated the differences between the calculated linear attenuation coefficient and empirical values, which reached 15% at 59.5 keV of 241 Am, and 5e9% at higher energies. Maharewicz (2005) has established a relationship between self-attenuation correction factor of a cylindrical form of counting geometry and sample thickness (Equation (3).…”

An experimental search for a correlation between outdoor 222Rn concentration and 210Pb activity in air particulate samples

“…As al ready men tioned, un cer tainty on air vol ume sam pled V was fur nished by the tur bine man u fac turer as DV/V = 1 %, cor re spond ing to what in di cated by Makarewicz [30]. More im por tance had the vari a tion of the flow rate dur ing the same sam pling pe riod.…”

“…An anal y sis of the causes of un cer tainty has been made with ref er ence to pa ram e ters for par tic u late sam pling and mea sure ments given in [29,30]. Some of the pa ram e ters that may be af fected by un cer tain ties were al ready taken into ac count by the meth ods used to de ter mine 210 Pb and 222 Rn air ac tiv ity.…”

Calibration of HPGe detectors using certified reference materials of natural origin

“…for experimental time periods of \1 % of nuclide half-life the magnitude of the correction factor is \ \1 % and therefore can be neglected. On the other hand, when all corrections are needed, attention must be paid to the correlation among the three correction factors [19]. The correction on the random summing is considered negligible since the dead time is too low for low count rates which are of the order of few hundreds of cps.…”