Details

Autor(en) / Beteiligte

• Bottoni, S.
• Gamba, E. R.
• De Gregorio, G.
• Gargano, A.
• Leoni, S.
• Fornal, B.
• Brancadori, N.
• Ciconali, G.
• Crespi, F. C. L.
• Cieplicka-Oryńczak, N.
• Iskra, L. W.
• Colombi, G.
• Kim, Y.H.
• Köster, U.
• Michelagnoli, C.
• Dunkel, F.
• Esmaylzadeh, A.
• Gerhard, L.
• Jolie, J.
• Knafla, L.
• Ley, M.
• Régis, J.-M.
• Schomaker, K.
• Sferrazza, M.

Titel

Core-proton coupled nature of the 11/2+ state in 131 Sb probed by lifetime measurements

Ist Teil von

• Journal of physics. Conference series, 2023-03, Vol.2453 (1), p.12028

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2023

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract The structure of the 11 / 2 1 + state in 131 Sb was investigated at the LOHENGRIN spectrometer of Institut Laue-Langevin via neutron-induced fission of 235 U and lifetime measurements, yielding T 1 / 2 = 3 ( 2 ) , at the edge of the sensitivity of the experimental method. This first result for the 11 / 2 1 + state half-life in neutron-rich Sb isotopes provides a quadrupole reduced transition probability to the ground state of B ( E 2 ) = 1.4 − 0.6 + 1.5 W.u., very close to the B ( E 2 ; 2 1 + → 0 1 + ) in 130 Sn. Realistic shell-model calculations reproduce well both the experimental level scheme of 131 Sb and the B ( E 2 ; 11 / 2 1 + → 7 / 2 1 + ) value, indicting a dominant 2 + ( 130 Sn ) ⊗ π g 7 / 2 core-proton coupled configuration for the 11 / 2 1 + state.