Bocchi, Giovanni ; Leoni, Silvia ; Fornal, Bogdan ; Colò, Gianluca ; Bortignon, Pier Francesco ; Bottoni, Simone ; Bracco, Angela ; Michelagnoli, Caterina ; Bazzacco, Dino B. ; Blanc, Aurélien ; France, Gilles de ; Jentschel, Michael ; Köster, Ulli ; Mutti, Paolo ; Régis, Jean Marc ; Simpson, Gary S. ; Soldner, Torsten ; Ur, Calin Alexandru ; Urban, Waldemar ; Fraile, Luis Mario ; Lozeva, Radomira ; Belvito, B. ; Benzoni, Giovanna ; Bruce, Alison M. ; Carroll, R. ; Cieplicka-Orynczak, Natalia ; Crespi, Fabio Celso Luigi ; Didierjean, François ; Jolie, Jan ; Korten, Wolfram ; Kröll, Thorsten ; Nannini, Adriana ; Napoli, Daniel R. ; Olaizola, Bruno ; Paziy, V. ; Podolyák, Zs. ; Regan, Patrick ; Saed-Samii, N. ; Szpak, Bartłomiej ; Lalkovski, Stefan ; Mach, Henryk A. ; Mârginean, Nicolae Marius ; Melon, Barbara ; Mengoni, Daniele ; Million, Bénédicte ; Vedia, Victoria (2022)
The mutable nature of particle-core excitations with spin in the
one-valence-proton nucleus ¹³³Sb.
In: Physics Letters B, 2016, 760
doi: 10.26083/tuprints-00012670
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
The γ-ray decay of excited states of the one-valence-proton nucleus ¹³³Sb has been studied using cold-neutron induced fission of ²³⁵U and ²⁴¹Pu targets, during the EXILL campaign at the ILL reactor in Grenoble. By using a highly efficient HPGe array, coincidences between γ-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 μs 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 ¹³²Sn and the valence proton, using the Skyrme effective interaction in a consistent way. The results point to a fast change in the nature of particle-core excitations with increasing spin.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Bocchi, Giovanni ; Leoni, Silvia ; Fornal, Bogdan ; Colò, Gianluca ; Bortignon, Pier Francesco ; Bottoni, Simone ; Bracco, Angela ; Michelagnoli, Caterina ; Bazzacco, Dino B. ; Blanc, Aurélien ; France, Gilles de ; Jentschel, Michael ; Köster, Ulli ; Mutti, Paolo ; Régis, Jean Marc ; Simpson, Gary S. ; Soldner, Torsten ; Ur, Calin Alexandru ; Urban, Waldemar ; Fraile, Luis Mario ; Lozeva, Radomira ; Belvito, B. ; Benzoni, Giovanna ; Bruce, Alison M. ; Carroll, R. ; Cieplicka-Orynczak, Natalia ; Crespi, Fabio Celso Luigi ; Didierjean, François ; Jolie, Jan ; Korten, Wolfram ; Kröll, Thorsten ; Nannini, Adriana ; Napoli, Daniel R. ; Olaizola, Bruno ; Paziy, V. ; Podolyák, Zs. ; Regan, Patrick ; Saed-Samii, N. ; Szpak, Bartłomiej ; Lalkovski, Stefan ; Mach, Henryk A. ; Mârginean, Nicolae Marius ; Melon, Barbara ; Mengoni, Daniele ; Million, Bénédicte ; Vedia, Victoria |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus ¹³³Sb |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2016 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physics Letters B |
| Jahrgang/Volume einer Zeitschrift: | 760 |
| DOI: | 10.26083/tuprints-00012670 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/12670 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| Kurzbeschreibung (Abstract): | The γ-ray decay of excited states of the one-valence-proton nucleus ¹³³Sb has been studied using cold-neutron induced fission of ²³⁵U and ²⁴¹Pu targets, during the EXILL campaign at the ILL reactor in Grenoble. By using a highly efficient HPGe array, coincidences between γ-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 μs 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 ¹³²Sn and the valence proton, using the Skyrme effective interaction in a consistent way. The results point to a fast change in the nature of particle-core excitations with increasing spin. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-126705 |
| Zusätzliche Informationen: | Keywords: Neutron induced fission; Gamma spectroscopy; Nuclear state lifetime; Large Ge array; Particle-core couplings |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 09 Mär 2022 15:16 |
| Letzte Änderung: | 10 Mär 2022 08:28 |
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| Zugehörige Links: | |
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