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Observation of a core-excited E4 isomer in Cd-98
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2004 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 69, no 6Article in journal (Refereed) Published
Abstract [en]

A core-excited I-pi=(12(+)) spin-gap isomer was identified in Cd-98 in an experiment at EUROBALL IV. It was found to feed the known I-pi=(8(+)) seniority isomer by an E4 transition. Half-lives of T-1/2=0.23 ((+4)(-3)) mus and 0.17 ((+6)(-4)) mus were measured for the two states at E-x=6635 keV and 2428 keV, respectively. From the excitation energy of the core-excited isomer a Sn-100 shell gap of 6.46(15) MeV is inferred. The measured E4 and E2 strengths, Sn-100 core excitations and the origin of empirical polarization charges are discussed in the framework of large-scale shell model calculations. An E2 polarization charge for protons of deltae(pi)

Place, publisher, year, edition, pages
2004. Vol. 69, no 6
Keyword [en]
shell-model calculations, 80-100 mass region, high-spin states, = 50 nuclei, ge detectors, beta-decay, sn-100, polarization, particle, spectra
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-23548DOI: 10.1103/PhysRevC.69.064304ISI: 000222391000012ScopusID: 2-s2.0-4143094990OAI: diva2:342246
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-10-11Bibliographically approved

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