Title: Alpha-particle emission probabilities of 236U obtained by alpha spectrometry
Authors: MAROULI MARIAPOMME StefaanJOBBAGY VIKTORVAN AMMEL RafPAEPEN JanSTROH HEIKOBENEDIK Ljudmila
Citation: APPLIED RADIATION AND ISOTOPES vol. 87 p. 292-296
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2014
JRC N°: JRC80528
ISSN: 0969-8043
URI: http://dx.doi.org/10.1016/j.apradiso.2013.11.020
http://publications.jrc.ec.europa.eu/repository/handle/JRC80528
DOI: 10.1016/j.apradiso.2013.11.020
Type: Articles in periodicals and books
Abstract: High-resolution alpha-particle spectrometry was performed with an ion-implanted silicon detector in vacuum on a homogeneously electrodeposited 236U source. The source was measured at different solid angles subtended by the detector, varying between 0.8% and 2.4% of 4π sr, to assess the influence of coincidental detection of alpha-particles and conversion electrons on the measured alpha-particle emission probabilities. Additional measurements were performed using a bending magnet to eliminate conversion electrons, the results of which coincide with normal measurements extrapolated to an infinitely small solid angle.The measured alpha emission probabilities for the three main peaks – 74.20 (5)%, 25.68(5)% and 0.123 (5)%, respectively – are consistent with literature data, but their precision has been improved by at least one order of magnitude in this work.
JRC Directorate:Health, Consumers and Reference Materials

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