Half-life measurement of 133mCe with γ -spectrometry

Details Half-life measurement of 133mCe with γ -spectrometry Half-life measurement of 133mCe with γ -spectrometry

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epja...47....7f&link_type=abstract

The European Physical Journal A, Volume 47, article id. #7

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

In this paper we describe our experiment determining the half-life of 133mCe . An activation-based nuclear-reaction cross-section measurement has been carried out for the 130Ba( α, n)133mCe reaction, in order to improve our knowledge of the astrophysical p-process. For the analysis of such a measurement, the precise knowledge of the decay half-life of the reaction product is desired. In the case of 133mCe the literature half-life value has only been known with a high relative uncertainty. A measurement utilizing γ -spectrometry has been carried out to refine the half-life of 133mCe . As a result, the new recommended half-life is t 1/2 = (5.326±0.011) h. This value has been found to be consistent with the previous literature value, while its uncertainty has been reduced by more than a factor of 30.

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