Bocchi, G., Leoni, S., Fornal, B., Colo, G., Bortignon, P. F., Bottoni, S., Bracco, A., Michelagnoli, C., Bazzacco, D., Blanc, A., de France, G., Jentschel, M., Koster, U., Mutti, P., Regis, J. -M., Simpson, G., Soldner, T., Ur, C. A., Urban, W., Fraile, L. M., Lozeva, R., Belvito, B., Benzoni, G., Bruce, A., Carroll, R., Cieplicka-Orynczak, N., Crespi, F. C. L., Didierjean, F., Jolie, J., Korten, W., Kroell, T., Lalkovski, S., Mach, H., Marginean, N., Melon, B., Mengoni, D., Million, B., Nannini, A., Napoli, D., Olaizola, B., Paziy, V., Podolyak, Zs., Regan, P. H., Saed-Samii, N., Szpak, B. and Vedia, V. (2016). The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus Sb-133. Phys. Lett. B, 760. S. 273 - 279. AMSTERDAM: ELSEVIER. ISSN 1873-2445

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Abstract

The gamma-ray decay of excited states of the one-valence-proton nucleus Sb-133 has been studied using cold-neutron induced fission of U-235 and Pu-241 targets, during the EXILL campaign at the ILL reactor in Grenoble. By using a highly efficient HPGe array, coincidences between gamma-rays prompt with the fission event and those delayed up to several tens of microseconds were investigated, allowing to observe, for the first time, high-spin excited states above the 16.6 mu s isomer. Lifetimes analysis, performed by fast-timing techniques with LaBr3(Ce) scintillators, revealed a difference of almost two orders of magnitude in B(M1) strength for transitions between positive-parity medium-spin yrast states. The data are interpreted by a newly developed microscopic model which takes into account couplings between core excitations (both collective and non-collective) of the doubly magic nucleus Sn-132 and the valence proton, using Skyrme effective interaction in a consistent way. The results point to a fast change in the nature of particle-core excitations with increasing spin. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bocchi, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Leoni, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fornal, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Colo, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bortignon, P. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bottoni, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bracco, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Michelagnoli, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bazzacco, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Blanc, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de France, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jentschel, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koster, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mutti, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Regis, J. -M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simpson, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Soldner, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ur, C. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Urban, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fraile, L. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lozeva, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Belvito, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benzoni, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bruce, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carroll, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cieplicka-Orynczak, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crespi, F. C. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Didierjean, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jolie, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korten, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kroell, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lalkovski, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mach, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marginean, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Melon, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mengoni, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Million, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nannini, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Napoli, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olaizola, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paziy, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Podolyak, Zs.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Regan, P. H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saed-Samii, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Szpak, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vedia, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-262412
DOI: 10.1016/j.physletb.2016.06.065
Journal or Publication Title: Phys. Lett. B
Volume: 760
Page Range: S. 273 - 279
Date: 2016
Publisher: ELSEVIER
Place of Publication: AMSTERDAM
ISSN: 1873-2445
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
EXCITED-STATES; GAMMA-RAY; OCTUPOLE; SPECTROMETER; ISOMER; ARRAYMultiple languages
Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & FieldsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/26241

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