Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

Analysis of gamma-ray spectra with spectral unmixing -Part I: Determination of the characteristic limits (decision threshold and statistical uncertainty)

Abstract : Poisson-statistics based spectral unmixing has been shown to be an efficient analysis tool for the radionuclides activity estimation from gamma-ray spectrometry measurements. However, the calculation of the corresponding characteristic limits has not been investigated so far. In this paper, we present the quantification of the decision threshold and the limits of the coverage interval for the metrological use of such spectral unmixing algorithms. The proposed approach is evaluated and validated with simulated spectra of HPGe and NaI measurements by comparing the results to characteristic values calculated from Monte Carlo simulations. We focus particularly on the validation of the method for the metrological analysis of environmental measurements, for which the lowlevel activity quantification requires an accurate characteristic limits determination. Along with the instrument calibration studied in Xu et al. (2021), we establish a metrological analysis tool by using the spectral unmixing algorithm for environmental aerosol gamma-ray measurements.
Document type :
Preprints, Working Papers, ...
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03345737
Contributor : Jiaxin Xu Connect in order to contact the contributor
Submitted on : Wednesday, September 15, 2021 - 6:09:49 PM
Last modification on : Friday, September 17, 2021 - 3:02:06 AM

File

Analysis_of_gamma_ray_spectra_...
Files produced by the author(s)

Identifiers

  • HAL Id : hal-03345737, version 1

Collections

Citation

Jiaxin Xu, Jérôme Bobin, Anne de Vismes Ott, Christophe Bobin, Paul Malfrait. Analysis of gamma-ray spectra with spectral unmixing -Part I: Determination of the characteristic limits (decision threshold and statistical uncertainty). 2021. ⟨hal-03345737⟩

Share

Metrics

Record views

16

Files downloads

36