%0 Journal Article %1 PhysRevC.107.014322 %A Bottoni, S. %A Gamba, E. R. %A De Gregorio, G. %A Gargano, A. %A Leoni, S. %A Fornal, B. %A Brancadori, N. %A Ciconali, G. %A Crespi, F. C. L. %A Cieplicka-Oryńczak, N. %A Iskra, Ł. W. %A Colombi, G. %A Kim, Y. H. %A Köster, U. %A Michelagnoli, C. %A Dunkel, F. %A Esmaylzadeh, A. %A Gerhard, L. %A Jolie, J. %A Knafla, L. %A Ley, M. %A Régis, J.-M. %A Schomaker, K. %A Sferrazza, M. %D 2023 %I American Physical Society %J Phys. Rev. C %K jolie myown %N 1 %P 014322 %R 10.1103/PhysRevC.107.014322 %T Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb. %U https://link.aps.org/doi/10.1103/PhysRevC.107.014322 %V 107 %X The lifetime of the 11/2+1 state in the 131Sb nucleus was measured at the LOHENGRIN spectrometer of the Institut Laue-Langevin via neutron-induced fission of 235U using γ-ray fast-timing techniques. The obtained value of T1/2=3(2) ps, at the edge of the sensitivity of the experimental method, is the first result for the 11/2+1 state half-life in neutron-rich Sb isotopes. The corresponding quadrupole reduced transition probability to the ground state is B(E2)=1.4+1.5−0.6W.u., indicating a noncollective nature of this state. Realistic shell-model calculations performed in a large valence space reproduce well the experimental value and point to a dominant 2+(130Sn)⊗πg7/2 configuration for the 11/2+1 state, as expected in a weak-coupling scenario. At the same time, the sum of the quadrupole strength of the multiplet states is predicted to exceed the one of the 130Sn core as a consequence of the equal contribution of the proton and the proton-neutron quadrupole matrix elements, pointing to possible development of collectivity already in the close neighborhood of 132Sn.

@article{PhysRevC.107.014322, abstract = {The lifetime of the 11/2+1 state in the 131Sb nucleus was measured at the LOHENGRIN spectrometer of the Institut Laue-Langevin via neutron-induced fission of 235U using γ-ray fast-timing techniques. The obtained value of T1/2=3(2) ps, at the edge of the sensitivity of the experimental method, is the first result for the 11/2+1 state half-life in neutron-rich Sb isotopes. The corresponding quadrupole reduced transition probability to the ground state is B(E2)=1.4+1.5−0.6W.u., indicating a noncollective nature of this state. Realistic shell-model calculations performed in a large valence space reproduce well the experimental value and point to a dominant 2+(130Sn)⊗πg7/2 configuration for the 11/2+1 state, as expected in a weak-coupling scenario. At the same time, the sum of the quadrupole strength of the multiplet states is predicted to exceed the one of the 130Sn core as a consequence of the equal contribution of the proton and the proton-neutron quadrupole matrix elements, pointing to possible development of collectivity already in the close neighborhood of 132Sn.}, added-at = {2023-04-14T13:08:55.000+0200}, author = {Bottoni, S. and Gamba, E. R. and De Gregorio, G. and Gargano, A. and Leoni, S. and Fornal, B. and Brancadori, N. and Ciconali, G. and Crespi, F. C. L. and Cieplicka-Oryńczak, N. and Iskra, Ł. W. and Colombi, G. and Kim, Y. H. and Köster, U. and Michelagnoli, C. and Dunkel, F. and Esmaylzadeh, A. and Gerhard, L. and Jolie, J. and Knafla, L. and Ley, M. and Régis, J.-M. and Schomaker, K. and Sferrazza, M.}, biburl = {https://www.bibsonomy.org/bibtex/2ea1c4b6b76e4f5881bec82b6a7803985/ikpcologne}, description = {Phys. Rev. C 107, 014322 (2023) - Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb.}, doi = {10.1103/PhysRevC.107.014322}, interhash = {f916889c0e52327f08f5a9ea2c9f7399}, intrahash = {ea1c4b6b76e4f5881bec82b6a7803985}, journal = {Phys. Rev. C}, keywords = {jolie myown}, month = jan, number = 1, numpages = {6}, pages = 014322, publisher = {American Physical Society}, timestamp = {2023-04-14T13:08:55.000+0200}, title = {Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb.}, url = {https://link.aps.org/doi/10.1103/PhysRevC.107.014322}, volume = 107, year = 2023 }