Determination of the half-life of 213Fr with high precision.

Authors :: Fisichella, M.
Musumarra, A.
Farinon, F.
Nociforo, C.
Del Zoppo, A.
Figuera, P.
Cognata, M. La
Pellegriti, M. G.
Scuderi, V.
Torresi, D.
Strano, E.
Source :: Physical Review C: Nuclear Physics. Jul2013, Vol. 88 Issue 1, p1-4. 4p.
Publication Year :: 2013
Abstract: High-precision measurement of half-life and Qa value of neutral and highly charged a emitters is a major subject of investigation currently. In this framework, we recently pushed half-life measurements of neutral emitters to a precision of a few per mil. This result was achieved by using different techniques and apparatuses at Istituto Nazionale di Fisica Nucleare Laboratori Nazionali del Sud (INFN-LNS) and GSI Darmstadt. Here we report on 213Fr half-life determination [T1/2(213Fr) =34.14 ± 0.06 s] at INFN-LNS, detailing the measurement protocol used. Direct comparison with the accepted value in the literature shows a discrepancy of more than three sigma. We propose this new value as a reference, discussing previous experiments. [ABSTRACT FROM AUTHOR]