Elsevier

Nuclear Physics A

Volume 613, Issues 1–2, 27 January 1997, Pages 107-131
Nuclear Physics A

Octupole correlations in neutron-rich, even-even barium isotopes

https://doi.org/10.1016/S0375-9474(96)00393-4Get rights and content

Abstract

A = 140–148 even-even barium nuclei produced in the spontaneous fission of 248Cm were studied using the EUROGAM2 array. Spins and parities of excited levels have been firmly established from triple-γ angular correlation and direction-polarization correlation measurements. Known band structures have been extended and new bands were found. Band-crossing phenomena have been studied, which suggest termination of an alternating-parity band by particle alignment in 146Ba. The new data for 148Ba confirm predictions of a local decrease of electric dipole moment in 146Ba.

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