Reprint of experiments and theory of (138)La radioactive decay

We measured with unprecedented accuracy key features of the (138)La radioactive decays as β particle energy distribution from 0.5keV to the end-point and ratios of electron capture probabilities PL/PK, PM/PK and PM/PL. This was achieved by making use of LaBr3:Ce and CeBr3 scintillator detectors. The...

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Bibliographic Details
Published in:Applied radiation and isotopes 2016-03, Vol.109, p.172-176
Main Authors: Quarati, F G A, Dorenbos, P, Mougeot, X
Format: Article
Language:English
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Summary:We measured with unprecedented accuracy key features of the (138)La radioactive decays as β particle energy distribution from 0.5keV to the end-point and ratios of electron capture probabilities PL/PK, PM/PK and PM/PL. This was achieved by making use of LaBr3:Ce and CeBr3 scintillator detectors. The advantage of the presented technique relies on the double role of LaBr3:Ce as source of (138)La and detector medium resulting in a relatively efficient counting statistics and unaltered β energy detection. The experimental results are compared to advanced computational techniques and significant deviation is found below 20keV with the computational spectrum showing a 5% excess of β particle relative to the experimental spectrum at 10keV.
ISSN:1872-9800
DOI:10.1016/j.apradiso.2016.01.017