Calculation of the detection limits for radionuclides identified in gamma-ray spectra based on post-processing peak analysis results

Korun, M.; Vodenik, B.; Zorko, Benjamin

doi:10.1016/j.apradiso.2017.11.031

Cited by 7 publications

(1 citation statement)

References 6 publications

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“…Here, the data sets where the peak areas were calculated with the least-square method and the data sets calculated with the ROI method are denoted with open triangles and full dots, respectively. It can be observed that the same number of located peaks, i.e., for data sets analysed with the same effective sensitivity, the mean relative uncertainties obtained with the LSQ method are smaller, as expected (Korun et al, 2018). For the data sets comprising more than 100 peaks, the type of software used is identified.…”

Section: Discussionsupporting

confidence: 67%

Determining the probability of locating peaks using computerized peak-location methods in gamma-ray spectra as a function of the relative peak-area uncertainty

Santoro

Anagnostakis

Boshkova

et al. 2020

Applied Radiation and Isotopes

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Section: Discussionsupporting

confidence: 67%

Determining the probability of locating peaks using computerized peak-location methods in gamma-ray spectra as a function of the relative peak-area uncertainty

Santoro

Anagnostakis

Boshkova

et al. 2020

Applied Radiation and Isotopes

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Reduction of detection limits in monitoring of internal exposures by a combined evaluation of emissions and spectra

Meisenberg

2024

Radiat Environ Biophys

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Routine monitoring of internal exposures requires the detection of effective doses of at most 1 mSv per calendar year. For some radionuclides, this requirement cannot be satisfied by a conventional evaluation of the spectra that are gained in alpha or gamma spectrometry. However, since several measurements are conducted per calendar year on a regular basis, a combined evaluation of measurements, i.e. the evaluation of sum spectra, is possible. Additionally, radionuclides that feature several emissions of alpha or gamma radiation allow a combined evaluation of their emissions. Both methods can lead to significantly smaller detection limits as compared to a separate evaluation of spectra in many cases. However, the variation of parameters that influence the evaluation such as the measurement efficiency, abundance and chemical yield requires specific calculations and treatments of the spectra as well as a manipulation of the channel contents: In a combination of emissions, energy regions are summed and evaluated with a combined efficiency that is weighted by the abundances. In a combination of spectra, the channel contents must be scaled by the ratio of the calibration factors before the summation of the spectra. In the routine monitoring of short-lived radionuclides that feature a variety of emissions such as 225Ac, these combinations are particularly effective in reducing the detectable annual effective dose. For alpha spectrometry of 225Ac, both methods applied together can lead to a detectable effective dose of about 1 mSv per year as compared to a dose of about 90 mSv with a conventional separate evaluation.

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Empirical determination of the correlation coefficient between the number of counts in a peak in a gamma-ray spectrum and the number of counts in the continuum where the peak is superimposed

Korun

Petrovič

Vodenik

et al. 2020

Applied Radiation and Isotopes

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Calculation of the detection limits for radionuclides identified in gamma-ray spectra based on post-processing peak analysis results

Cited by 7 publications

References 6 publications

Determining the probability of locating peaks using computerized peak-location methods in gamma-ray spectra as a function of the relative peak-area uncertainty

Determining the probability of locating peaks using computerized peak-location methods in gamma-ray spectra as a function of the relative peak-area uncertainty

Reduction of detection limits in monitoring of internal exposures by a combined evaluation of emissions and spectra

Empirical determination of the correlation coefficient between the number of counts in a peak in a gamma-ray spectrum and the number of counts in the continuum where the peak is superimposed

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