https://doi.org/10.1140/epja/i2010-10945-7
Regular Article - Experimental Physics
Coulomb excitation of the odd-odd isotopes 106, 108In
1
Physics Department, University of Lund, Box 118, SE-221 00, Lund, Sweden
2
PH Department, CERN, 1211, Geneva 23, Switzerland
3
Physics Department and Center of Mathematics for Applications, University of Oslo, Oslo, Norway
4
Institute of Nuclear Physics, University of Cologne, Cologne, Germany
5
Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK
6
Department of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
7
CEA Saclay, Service de Physique Nucléaire, Gif-sur-Yvette, France
8
Gesellschaft für Schwerionenforschung, Darmstadt, Germany
9
Instituut voor Kern- en Stralingsfysica, K.U. Leuven, Belgium
10
Heavy Ion Laboratory, University of Warsaw, Warsaw, Poland
11
Institut Laue Langevin, 6 rue Jules Horowitz, 38042, Grenoble, France
12
Department of Physics, University of Manchester, Manchester, UK
13
AB Department, CERN, 1211, Geneva 23, Switzerland
14
Institute of Experimental Physics, University of Warsaw, Warsaw, Poland
15
Department of Physics, University of Oslo, Oslo, Norway
16
Physics Department, University of Copenhagen, Copenhagen, Denmark
* e-mail: andreas.ekstrom@nuclear.lu.se
Received:
30
November
2009
Revised:
19
January
2010
Accepted:
1
March
2010
Published online:
20
April
2010
The low-lying states in the odd-odd and unstable isotopes 106, 108In have been Coulomb excited from the ground state and the first excited isomeric state at the REX-ISOLDE facility at CERN. With the additional data provided here the
g
9/2
-1 ⊗
d
5/2 and
g
9/2
-1 ⊗
g
7/2 multiplets have been re-analyzed and are modified compared to previous results. The observed
-ray de-excitation patterns were interpreted within a shell model calculation based on a realistic effective interaction. The agreement between theory and experiment is satisfactory and the calculations reproduce the observed differences in the excitation pattern of the two isotopes. The calculations exclude a 6+ ground state in 106In . This is in agreement with the conclusions drawn using other techniques. Furthermore, based on the experimental results, it is also concluded that the ordering of the isomeric and ground state in 108In is inverted compared to the shell model prediction. Limits on B(E2) values have been extracted where possible. A previously unknown low-lying state at 367keV in 106In is also reported.
© SIF, Springer-Verlag Berlin Heidelberg, 2010