Characterization of strong 241Am sources
Artikel i vetenskaplig tidskrift, 2015

Gamma ray spectra of strong 241Am sources may reveal information about the source composition as there may be other radioactive nuclides such as progeny and radioactive impurities present. In this work the possibility to use gamma spectrometry to identify inherent signatures in 241Am sources in order to differentiate sources from each other, is investigated. The studied signatures are age, i.e. time passed since last chemical separation, and presence of impurities. The spectra of some sources show a number of Doppler broadened peaks in the spectrum which indicate the presence of nuclear reactions on light elements within the sources. The results show that the investigated sources can be differentiated between by age and/or presence of impurities. These spectral features would be useful information in a national nuclear forensics library (NNFL) in cases when the visual information on the source, e.g. the source number, is unavailable.

Nuclear forensics

241Am

Impurities

Gamma spectrometry

Age

Signatures

Författare

Anna Vesterlund

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Dina Chernikova

Chalmers, Teknisk fysik, Nukleär teknik

Petty Bernitt Cartemo

Chalmers, Teknisk fysik, Nukleär teknik

Kåre Axell

Chalmers, Teknisk fysik, Nukleär teknik

Anders Nordlund

Chalmers, Teknisk fysik, Nukleär teknik

Gunnar Skarnemark

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Christian Ekberg

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Henrik Ramebäck

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Applied Radiation and Isotopes

0969-8043 (ISSN)

Vol. 99 162-167

DOI

10.1016/j.apradiso.2015.03.002