Joakim Cederkäll
Professor
Sub-barrier Coulomb excitation of Sn-110 and its implications for the Sn-100 shell closure
Author
Summary, in English
The first excited 2(+) state of the unstable isotope Sn-110 has been studied in safe Coulomb excitation at 2.82 MeV/u using the MINIBALL array at the REX-ISOLDE post accelerator at CERN. This is the first measurement of the reduced transition probability of this state using this method for a neutron deficient Sn isotope. The strength of the approach lies in the excellent peak-to-background ratio that is achieved. The extracted reduced transition probability, B(E2 : 0(+) -> 2(+)) 0.220 +/- 0.022e(2) b(2), strengthens the observation of the evolution of the B(E2) values of neutron deficient Sn isotopes that was observed recently in intermediate-energy Coulomb excitation of Sn-108. It implies that the trend of these reduced transition probabilities in the even-even Sn isotopes is not symmetric with respect to the midshell mass number A = 116 as Sn-100 is approached.
Department/s
- Nuclear physics
Publishing year
2007
Language
English
Publication/Series
Physical Review Letters
Volume
98
Issue
17
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
Status
Published
Research group
- Nuclear Structure
ISBN/ISSN/Other
- ISSN: 1079-7114