Enhanced Quadrupole and Octupole Strength in Doubly Magic Sn 132

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Bibtex

@article{e6a2309c41b5477689b1d1a1518d49e6,
title = "Enhanced Quadrupole and Octupole Strength in Doubly Magic Sn 132",
abstract = "The first 2+ and 3- states of the doubly magic nucleus Sn132 are populated via safe Coulomb excitation employing the recently commissioned HIE-ISOLDE accelerator at CERN in conjunction with the highly efficient MINIBALL array. The Sn132 ions are accelerated to an energy of 5.49 MeV/nucleon and impinged on a Pb206 target. Deexciting γ rays from the low-lying excited states of the target and the projectile are recorded in coincidence with scattered particles. The reduced transition strengths are determined for the transitions 0g.s.+→21+, 0g.s.+→31-, and 21+→31- in Sn132. The results on these states provide crucial information on cross-shell configurations which are determined within large-scale shell-model and Monte Carlo shell-model calculations as well as from random-phase approximation and relativistic random-phase approximation. The locally enhanced B(E2;0g.s.+→21+) strength is consistent with the microscopic description of the structure of the respective states within all theoretical approaches. The presented results of experiment and theory can be considered to be the first direct verification of the sphericity and double magicity of Sn132.",
author = "MINIBALL and HIE-ISOLDE and D. Rosiak and M. Seidlitz and P. Reiter and H. Na{\"i}dja and Y. Tsunoda and T. Togashi and F. Nowacki and T. Otsuka and G. Col{\`o} and K. Arnswald and T. Berry and A. Blazhev and Borge, {M. J.G.} and J. Cederk{\"a}ll and Cox, {D. M.} and {De Witte}, H. and Gaffney, {L. P.} and C. Henrich and R. Hirsch and M. Huyse and A. Illana and K. Johnston and L. Kaya and Th Kr{\"o}ll and Benito, {M. L.Lozano} and J. Ojala and J. Pakarinen and M. Queiser and G. Rainovski and Rodriguez, {J. A.} and B. Siebeck and E. Siesling and J. Sn{\"a}ll and {Van Duppen}, P. and A. Vogt and {Von Schmid}, M. and N. Warr and F. Wenander and Zell, {K. O.}",
year = "2018",
month = "12",
day = "18",
doi = "10.1103/PhysRevLett.121.252501",
language = "English",
volume = "121",
journal = "Physical Review Letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "25",

}