https://doi.org/10.1140/epja/s10050-021-00492-x
Regular Article - Experimental Physics
Lifetime measurements in 
using 
– fast-timing
1
Institut für Kernphysik, Universität zu Köln, 50937, Cologne, Germany
2
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
3
Argonne National Laboratory, 9700 South Cass Ave, 60439, Argonne, IL, USA
Received:
15
January
2021
Accepted:
18
May
2021
Published online:
29
May
2021
The level lifetimes of the 
and 
states in have been re-measured employing the – fast-timing technique using fast 
(Ce) scintillators. Excited states in the nucleus of interest were populated by the fusion-evaporation reaction 
at a beam energy of 87 MeV provided by the FN Tandem accelerator of the University of Cologne. The lifetime of the state was re-measured with high accuracy to be 
ps and resolves inconsistencies from previous measurements. Experimental results are compared to theoretical calculations in the framework of the sd-IBM with and without configuration mixing.
© The Author(s) 2021
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