Shape coexistence in Ba132

E. S. Paul, D. B. Fossan, Y. Liang, R. Ma, N. Xu

Research output: Contribution to journalArticle

71 Scopus citations


Rotational states have been populated in -soft Ba132 following the Sn122(13C,3n) reaction. The ground state of this nucleus is predicted to possess maximal triaxiality -30°. Two I=2 bands were established, based on quasineutron configurations with large negative deformations close to the collective oblate shape =-60°. The bandhead of one of these bands, associated with a [h11/2]2 configuration, was found to be isomeric with a mean lifetime =12.50.3 ns. A third I=2 band was observed, built on a two-quasiproton configuration with a near-prolate shape (0°). In addition, two I=1 bands, built on mixed proton-neutron four-quasiparticle configurations with oblate shapes (-60°), were established.

Original languageEnglish (US)
Pages (from-to)1255-1264
Number of pages10
JournalPhysical Review C
Issue number3
StatePublished - Jan 1 1989
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Paul, E. S., Fossan, D. B., Liang, Y., Ma, R., & Xu, N. (1989). Shape coexistence in Ba132. Physical Review C, 40(3), 1255-1264.