Speaker
T. Behrens
(Physics Department E12, TU München)
Description
Recent studies on isotopes around the shell closure N=82 have shown that despite
decreasing excitation energies the B(E2) values of Sn and Te isotopes above
N=82 are lower than expected. The aim of our experiment was to measure B(E2) values
in neutron-rich even-even isotopes around the double magic 132Sn. In a first campaign
in 2004 we measured the gamma transitions of 122-126Cd. In 2005 we used the HPGe
gamma detector array MINIBALL for measuring the deexcitation gammas following
Coulex of 138-142Xe.
This will shed some light on the ambiguous measurements of the B(E2) value of
138Xe and gives us the possibility to evaluate the B(E2) values of
140,142Xe for the first time.
In this talk we will present first results of the analysis and discuss future
experiments.
Author
T. Behrens
(Physics Department E12, TU München)
Co-authors
A. Ekström
(Nuclear Structure Group, Lund University)
I. Stefanescu
(IKS, KU Leuven)
N. Warr
(IKP, Universität zu Köln)
P. Maierbeck
(Physics Department E12, TU München)
P.E. Kent
(Nuclear Physics Group, University of York)
R. Gernhäuser
(Physics Department E12, TU München)
R. Krücken
(Physics Department E12, TU München)
Th. Kröll
(Physics Department E12, TU München)
