Candidate chiral twin bands in the odd-odd nucleus 132 Cs : Exploring the limits of chirality in the mass A ≈ 130 region

High-spin states in the doubly odd $N=77$ nucleus ${}^{132}\mathrm{Cs}$ have been studied. The known positive-parity structures have been extended. \ensuremath{\gamma}-ray linear-polarization and angular-correlation measurements have been performed to establish the spin and parity assignment of these structures. A new chiral partner of the \ensuremath{\pi}{h}_{11/2}\ensuremath{\bigotimes}\ensuremath{\nu}{h}_{11/2} band has been proposed. Three-dimensional tilted axis cranking model calculations have been performed and compared with the experimental results

Confirmation of triple shape coexistence in 179Hg: Focal plane spectroscopy of the α decay of 183Pb

The α decay of 183Pb has been studied in detail at the focal plane of the RITU gas-filled separator. The four previously known α decay branches have been ordered into the decay of two isomers in 183Pb. The deduced decay scheme and the interpretation of the inferred α decay hindrance factors and γ rays observed at the focal plane are strongly in favor of the recent suggestion of triple shape coexistence-oblate, prolate, and near-spherical in the daughter nucleus 179Hg

First evidence for chirality in Tc isotopes: Spectroscopy of

Excited states in 100Tc have been studied using the 96Zr( 7Li, 3n) reaction at a beam energy of 27 MeV. In the present work, evidence has been found for a second ΔI = 1 band decaying via several stretched dipole transitions to the previously known ΔI = 1 negative-parity band. Comparison of these data with those in neighbouring nuclei and also against recently reported criteria for chiral bands in nuclei, suggests that the two structures can be interpreted as chiral partners. Core quasi-particle coupling model calculations show reasonable agreement with the data and generally support the chiral interpretation of the states

Probing the three shapes in ¹⁸⁶Pb using in-beam γ-ray spectroscopy

This measurement represents the first observation of a non-yrast band in the ¹⁸⁶Pb nucleus by employing the Recoil-Decay Tagging (RDT) technique. Previously known yrast levels have been confirmed and the band is extended up to level Iπ = (16⁺)