Measurement of absolute γ-ray emission probabilities in the decay of 235U
Accurate measurements were performed of the photon emission probabilities following the α decay of 235U to 231Th. Sources of highly enriched 235U were characterised in terms of isotopic composition by mass spectrometry and their activities were standardised by means of alpha-particle counting at a low defined solid angle. The standardised sources were subsequently measured by high-resolution γ-ray spectrometry with calibrated high-purity germanium detectors to determine the photon emission probabilities. Four laboratories participated in this work and reported emission probabilities for 33 γ-ray lines. Most of them agree with previously published evaluated data. In addition, new values are proposed for γ-lines which have been measured only once in the past.
MAROULI Maria;
LUTTER Guillaume;
POMME Stefaan;
VAN AMMEL Raf;
HULT Mikael;
RICHTER Stephan;
EYKENS Roger;
PEYRES Virginia;
GARCIA-TORANO E.;
DRYAK P.;
MAZANOVA M.;
CARCONI P.;
2017-12-20
PERGAMON-ELSEVIER SCIENCE LTD
JRC108321
0969-8043,
https://publications.jrc.ec.europa.eu/repository/handle/JRC108321,
10.1016/j.apradiso.2017.10.049,
Additional supporting files
| File name | Description | File type | |
|---|
