Feb 6 – 8, 2006
CERN
Europe/Zurich timezone

Coulomb Excitation of Neutron-rich Xe-Isotopes at REX-ISOLDE

Feb 8, 2006, 9:45 AM
20m
Council Chamber, 503/1-001 (CERN)

Council Chamber, 503/1-001

CERN

CH-1211 Geneva 23

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.

Primary 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)

Presentation materials