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|Title:||Measurement of absolute γ-ray emission probabilities in the decay of 235U|
|Authors:||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.|
|Citation:||APPLIED RADIATION AND ISOTOPES vol. 132 p. 72-78|
|Publisher:||PERGAMON-ELSEVIER SCIENCE LTD|
|Type:||Articles in periodicals and books|
|Abstract:||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.|
|JRC Directorate:||Nuclear Safety and Security|
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