Study of different filtering techniques applied to spectra from airborne gamma spectrometry
| Autor: | Stéphanie Ménard, Emilien Wilhelm, Nicolas Arbor, Sébastien Gutierrez, Abdel-Mjid Nourreddine |
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| Přispěvatelé: | DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2016 |
| Předmět: |
Health
Toxicology and Mutagenesis Noise reduction 010103 numerical & computational mathematics Statistical fluctuations 010502 geochemistry & geophysics Mass spectrometry 01 natural sciences Spectral line Nuclear magnetic resonance Optics Radiation Monitoring 0103 physical sciences Range (statistics) Environmental Chemistry 0101 mathematics Airborne gamma spectrometry Waste Management and Disposal 0105 earth and related environmental sciences Remote sensing Gamma energy Physics [PHYS]Physics [physics] Radionuclide 010308 nuclear & particles physics business.industry Chemistry 010401 analytical chemistry Spectra analysis General Medicine Filter (signal processing) Pollution 0104 chemical sciences Spectrometry Gamma Air Pollutants Radioactive Acquisition time business Algorithms |
| Zdroj: | Journal of Environmental Radioactivity Journal of Environmental Radioactivity, Elsevier, 2016, 164, pp.268-279. ⟨10.1016/j.jenvrad.2016.08.003⟩ Journal of Environmental Radioactivity, 2016, 164, pp.268-279. ⟨10.1016/j.jenvrad.2016.08.003⟩ |
| ISSN: | 1879-1700 0265-931X |
| DOI: | 10.1016/j.jenvrad.2016.08.003⟩ |
| Popis: | International audience; One of the features of the spectra obtained by airborne gamma spectrometry is the low counting statisticsdue to a short acquisition time (1 s) and a large source-detector distance (40 m) which leads tolarge statistical fluctuations. These fluctuations bring large uncertainty in radionuclide identification anddetermination of their respective activities from the window method recommended by the IAEA,especially for low-level radioactivity. Different types of filter could be used on spectra in order to removethese statistical fluctuations. The present work compares the results obtained with filters in terms oferrors over the whole gamma energy range of the filtered spectra with the window method. These resultsare used to determine which filtering technique is the most suitable in combination with somemethod for total stripping of the spectrum. |
| Databáze: | OpenAIRE |
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