The nuclide 231Pa is a member of the 235U decay chain. It is a complex alpha emitter with 25 identified alpha emissions. Formerly published alpha-particle emission probabilities were derived from measurements taken with magnetic spectrometers. This work presents the first measurements made with semiconductor detectors. High-resolution alpha-particle spectrometry was carried out at CIEMAT and JRC using ion-implanted planar silicon detectors. Alpha-particle emission probabilities of 23 transitions were derived from deconvolutions of the spectra. For the major lines, uncertainties are lower than 1%, a significant improvement to existing data. The new data set will allow a more accurate evaluation of the decay scheme of 231Pa.
GARCÍA-TORAÑO Eduardo;
CRESPO M. T.;
MAROULI Maria;
JOBBAGY Viktor;
POMME Stefaan;
IVANOV Peter;
2020-01-09
PERGAMON-ELSEVIER SCIENCE LTD
JRC116529
0969-8043 (online),
https://www.sciencedirect.com/science/article/pii/S0969804319303951?via%3Dihub,
https://publications.jrc.ec.europa.eu/repository/handle/JRC116529,
10.1016/j.apradiso.2019.108863 (online),
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