CERN Accelerating science

Article
Title	Coulomb excitation of the odd-odd isotopes $^{106, 108}$In
Author(s)	Ekstrom, A (Lund Univ, Dept Phys, Box 118, SE-22100 Lund, Sweden. ; Lund Univ, Dept Phys, SE-22100 Lund, Sweden.) ; Goergen, A (CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France.) ; Blazhev, A (Univ Cologne, Inst Nucl Phys, D-5000 Cologne 41, Germany.) ; Van de Walle, J (CERN ; Katholieke Univ Leuven, Inst Kern Stralingsfys, Louvain, Belgium.) ; Weisshaar, D (Univ Cologne, Inst Nucl Phys, D-5000 Cologne 41, Germany.) ; Zielinska, M (CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France. ; Univ Warsaw, Heavy Ion Lab, PL-00325 Warsaw, Poland.) ; Tveten, G M (CERN ; Univ Oslo, Dept Phys, N-0316 Oslo, Norway.) ; Marsh, B A (Univ Manchester, Dept Phys, Manchester M13 9PL, Lancs, England. ; CERN) ; Siem, S (Univ Oslo, Dept Phys, N-0316 Oslo, Norway.) ; Gorska, M (Gesell Schwerionenforsch mbH, Darmstadt, Germany.) ; Engeland, T (Univ Oslo, Dept Phys, N-0316 Oslo, Norway. ; Univ Oslo, Ctr Math Applicat, N-0316 Oslo, Norway.) ; Hurst, A M (Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England.) ; Cederkall, J (Lund Univ, Dept Phys, SE-22100 Lund, Sweden. ; CERN) ; Finke, F (Univ Cologne, Inst Nucl Phys, D-5000 Cologne 41, Germany.) ; Iwanicki, J (Univ Warsaw, Heavy Ion Lab, PL-00325 Warsaw, Poland.) ; Hjorth-Jensen, M (Univ Oslo, Dept Phys, N-0316 Oslo, Norway. ; Univ Oslo, Ctr Math Applicat, N-0316 Oslo, Norway.) ; Davinson, T (Univ Edinburgh, Dept Phys & Astron, Edinburgh EH8 9YL, Midlothian, Scotland.) ; Eberth, J (Univ Cologne, Inst Nucl Phys, D-5000 Cologne 41, Germany.) ; Sletten, G (Univ Copenhagen, Dept Phys, DK-1168 Copenhagen, Denmark.) ; Mierzejewski, J (Univ Warsaw, Heavy Ion Lab, PL-00325 Warsaw, Poland. ; Univ Warsaw, Inst Expt Phys, PL-00325 Warsaw, Poland.) ; Reiter, P (Univ Cologne, Inst Nucl Phys, D-5000 Cologne 41, Germany.) ; Warr, N (Univ Cologne, Inst Nucl Phys, D-5000 Cologne 41, Germany.) ; Butler, P A (Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England.) ; Fahlander, C (Lund Univ, Dept Phys, SE-22100 Lund, Sweden.) ; Stefanescu, I (Katholieke Univ Leuven, Inst Kern Stralingsfys, Louvain, Belgium.) ; Koester, U (CERN ; Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France.) ; Ivanov, O (Katholieke Univ Leuven, Inst Kern Stralingsfys, Louvain, Belgium.) ; Wenander, F (CERN) ; Voulot, D (CERN)
Publication	2010
In:	Eur. Phys. J. A 44 (2010) 355-361
DOI	10.1140/epja/i2010-10945-7
Subject category	Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN ISOLDE
Abstract	The low-lying states in the odd-odd and unstable isotopes In-106,In-108 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 pi g(9/2)(-1) circle times nu d(5/2) and pi g(9/2)(-1) circle times nu g7/2 multiplets have been re-analyzed and are modified compared to previous results. The observed gamma-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 In-106. 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 In-108 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 367 keV in In-106 is also reported.