Orateur
Andrey Blazhev
(IKP, University of Cologne)
Description
Isomers in regions around magic and doubly-magic nuclei allow for testing and tuning shell-model interactions and single particle energies and help for understanding of nuclear structure. Experimental transition strengths allow for determination of effective charges, while core-excited isomers manifest the shell gap and stress the importance of particle-hole excitations of the magic core.
In the region of the nuclear chart below 100Sn there is a multitude of nuclei with one or more isomeric states, both of seniority and spin-gap origin, some of which also core excited [1].
Following the experimental achievements of the last decades, a resent RISING experiment performed at the GSI, Darmstadt, yielded information about known and new isomeric states in the region, some predicted more than 30 years ago[2]. Our results on isomer spectroscopy of 94Pd[3], 96Ag[4], 96Cd[5] and 98Cd[6] as well as new preliminary results will be presented.
A comparison to shell-model calculations in various model spaces as well as implications for the nuclear structure around 100Sn will be presented and discussed.
[1] H. Grawe et al., Eur. Phys. J. A 27, 257 (2006)
[2] K. Ogawa, Phys. Rev. C 28, 958 (1983)
[3] T. S. Brock et al., Phys. Rev. C 82, 061309 (2010)
[4] P. Boutachkov et al., Phys. Rev. C 84, 044311 (2011)
[5] B. S. Nara Singh et al., Phys. Rev. Lett. 107, 172502 (2011)
[6] A. Blazhev et al., J. Phys.: Conf. Ser. 205, 012035 (2010)
Author
Andrey Blazhev
(IKP, University of Cologne)
Co-auteurs
Dr
B. S. Nara Singh
(University of York, York, UK)
Dr
Frederic NOWACKI
(IPHC Strasbourg)
Dr
Hubert Grawe
(GSI Helmholtzgesellschaft für Schwerrionenforschung)
Dr
Kamila Sieja
(Institute Pluridisciplinaire Hubert Curien)
Dr
M. Gorska
(GSI Helmholtzgesellschaft für Schwerrionenforschung)
M.
N. Braun
(IKP, University of Cologne)
Dr
Plamen Boutachkov
(GSI Helmholtzgesellschaft für Schwerrionenforschung)
Prof.
R. Wadsworth
(University of York, York, UK)
Dr
T. Brock
(University of York, York, UK)
Dr
Zh. Liu
(University of Edinburgh, Edinburgh, UK)
