Rotational bands in Gd140: Systematics of triaxial N=76 isotones

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

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

States up to Iπ=(20+) have been established in the neutron-deficient Gd140 nucleus by means of the Mo92(50Cr, 2pγ) reaction. At a rotational frequency Latin small letter h with strokeω=0.30 MeV, the ground-state band is crossed by a band built on the aligned [πh11/2]2 two-quasiproton configuration. This proton-aligned band was observed from spins 10+ to (20+). A second 10+ state was established which is most likely built on the [νh11/2]2 two-quasineutron configuration. The γ-vibrational band was observed up to Iπ=(8+) with the odd- and even-spin members exhibiting a pronounced signature splitting. The results are compared to those found recently for the lighter Nd136 and Sm138 N=76 isotones.

Original languageEnglish (US)
Pages (from-to)153-157
Number of pages5
JournalPhysical Review C
Volume39
Issue number1
DOIs
StatePublished - Jan 1 1989
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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