High-resolution alpha-particle spectrometry of the 230U decay series

High-resolution alpha-particle spectrometry was performed on the 230U decay series. A 230U source was prepared on stainless steel disk by electrodeposition in an ammonium nitrate solution. Spectrometry of the alpha-particle energy spectrum was performed with ionimplanted planar silicon detectors in vacuum. A set of alpha emission probabilities is presented for 230U and 226Th. The measured peak intensities were corrected mathematically for coincidental detection of alpha-particles and conversion electrons emitted in the same decay. A good agreement with literature data was observed. The uncertainty budget and the correlation matrix are presented. The validity of the alpha-particle energies was tested and could be confirmed for most peaks within a few keV, but discrepancies were found for the 2nd peak of 226Th and the main peak of 218Rn.

MAROULI Maria;  POMME Stefaan;  PAEPEN Jan;  VAN AMMEL Raf;  JOBBAGY Viktor;  DIRICAN Abdullah;  SULIMAN Gabriel;  STROH Heiko;  APOSTOLIDIS Christos;  ABBAS Kamel;  MORGENSTERN Alfred; 

2012-12-05

PERGAMON-ELSEVIER SCIENCE LTD

JRC66157

0969-8043,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC66157,   

10.1016/j.apradiso.2012.02.107,