Positive-parity rotational band in 158Tb.

Authors :: Zhong, J.
Ma, H. L.
Hu, S. P.
Wu, X. G.
Sun, H. B.
Li, G. S.
He, C. Y.
Zheng, Y.
Li, C. B.
Chen, Q. M.
Li, H. W.
Wu, Y. H.
Luo, P. W.
Source :: Physical Review C: Nuclear Physics. Aug2015, Vol. 92 Issue 2, p024308-1-024308-4. 4p.
Publication Year :: 2015
Abstract: Excited states of the odd-odd nucleus 158Tb have been studied via the 154Sm(7Li ,3n) 158Tb reaction at a beam energy of 27 MeV. The new level scheme of 158Tb involving a positive parity rotational band is established up to excitation energy ∼2.3 MeV and spin ∼17ħ. By comparing with the rotational bands in the neighboring nuclei 157Tb and 157Gd, the configuration was tentatively assigned as πd5/2⊗ vi13/2 , and the phenomenon of signature inversion is discussed. [ABSTRACT FROM AUTHOR]