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|Title:||Alpha-particle emission probabilities of 231Pa derived from first semiconductor spectrometric measurements|
|Authors:||GARCÍA-TORAÑO EDUARDO; CRESPO M. T.; MAROULI MARIA; JOBBAGY VIKTOR; POMME STEFAAN; IVANOV PETER|
|Citation:||APPLIED RADIATION AND ISOTOPES vol. 154 p. 108863 (7 pp)|
|Publisher:||PERGAMON-ELSEVIER SCIENCE LTD|
|Type:||Articles in periodicals and books|
|Abstract:||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.|
|JRC Directorate:||Nuclear Safety and Security|
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