Airborne spectrometry: Extraction of low energy using two or three spectral windows

Autor:	Abdel-Mjid Nourreddine, Ludovic Guillot, Nicolas Martin-Burtart
Rok vydání:	2012
Předmět:	Physics Flight altitude Radiation Low energy Altitude Isotope Extraction (chemistry) Mass spectrometry Tracking (particle physics) Remote sensing Peak detection
Zdroj:	Applied Radiation and Isotopes. 70:1784-1791
ISSN:	0969-8043
Popis:	Airborne γ - ray spectrometry with NaI(Tl) is a recognized tool for emergency mapping. The maps produced usually look for natural isotopes ( 40 K, 238 U, 232 Th) and 137 Cs due to the Chernobyl accident. Nowadays a new thematic emerges as nuclear materials tracking. Such materials emitting at low energies require new algorithms and a new method is presented here based on counts observed in two or three spectral windows. Since altitude is an important factor to be taken into account, an improvement is proposed to follow flight altitude changes. An extension to medium energies is proposed and compared to windows methods and to peak detection.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fa0317f4ac7e282786179edc3bd030b https://doi.org/10.1016/j.apradiso.2012.03.019 Zobrazit plný text záznamu Full Text from ScienceDirect