Enhanced Quadrupole and Octupole Strength in Doubly Magic 132Sn
Rosiak, D., Seidlitz, M., Reiter, P., Naïdja, H., Tsunoda, Y., Togashi, T., Nowacki, F., Otsuka, T., Colò, G., Arnswald, K., Berry, T., Blazhev, A., Borge, M. J. G., Cederkäll, J., Cox, D., De Witte, H., Gaffney, L. P., Henrich, C., Hirsch, R., . . . Zell, K. O. (2018). Enhanced Quadrupole and Octupole Strength in Doubly Magic 132Sn. Physical Review Letters, 121(25), Article 252501. https://doi.org/10.1103/PhysRevLett.121.252501
Julkaistu sarjassa
Physical Review LettersPäivämäärä
2018Tekijänoikeudet
© the Authors, 2018.
The first 2þ and 3− states of the doubly magic nucleus 132Sn are populated via safe Coulomb excitation
employing the recently commissioned HIE-ISOLDE accelerator at CERN in conjunction with the highly
efficient MINIBALL array. The 132Sn ions are accelerated to an energy of 5.49 MeV=nucleon and
impinged on a 206Pb 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 0þ
g:s: → 2þ
1 , 0þ
g:s: → 3−
1 , and 2þ
1 → 3−
1 in 132Sn. The results on these states
provide crucial information on cross-shell configurations which are determined within large-scale shellmodel and Monte Carlo shell-model calculations as well as from random-phase approximation and
relativistic random-phase approximation. The locally enhanced BðE2; 0þ
g:s: → 2þ
1 Þ 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 132Sn.
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Julkaisija
American Physical SocietyISSN Hae Julkaisufoorumista
0031-9007Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/28858414
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Rahoittaja(t)
Euroopan komissioRahoitusohjelmat(t)
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The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
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