First observation of a rotational band in odd Sn50 nuclei: Sn111

D. R. LaFosse, D. B. Fossan, J. R. Hughes, Y. Liang, P. Vaska, M. P. Waring, J. Y. Zhang, R. M. Clark, R. Wadsworth, S. A. Forbes, E. S. Paul

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22 Scopus citations


Proton particle-hole excitations across the Z=50 closed shell are responsible for inducing low-lying prolate deformation in even-50Sn nuclei. Although related rotational bands have been studied in odd-51Sb isotopes involving the coupling of a valence proton, none had been found in odd-50Sn nuclei. Using the Ru96(19F,3pn) reaction, a decoupled band has been observed in Sn111 extending to a spin-parity of (67/2-) and feeding out at 23/2- into spherical states. This band is interpreted as the νh11/2 valence orbital coupled to the deformed [(πg7/2)2(πg9/2)-2] Sn110 core. The extracted band properties are compared to those in Sb111 with the same deformed core.

Original languageEnglish (US)
Pages (from-to)R2876-R2879
JournalPhysical Review C
Issue number6
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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