Aligned bands and gyromagnetic ratios in 162,164Tm

Yrast and side bands in the odd-odd160, 162Tm nuclei

“…8) which strongly suggests the participation of the i13/2 neutron and supports the configuration assignment rc 7/2 + [404] x v 5/2 + [642] proposed in [8]. The excitation of this band to higher spins shows that the backbending appears only for h co c > 0.35 h (Fig.…”

“…In the present work the yrast band and the side bands B and C are observed up to spin values 2 to 4 units higher compared to previous data [8] 9 A new decoupled band, labelled D here, is also observed (Fig. 7).…”

“…This nucleus has previously been studied at the SIN cyclotron (Villigen/Switzerland) using the , two side bands labelled B and C have been observed [8].…”

Progress report on nuclear spectroscopic studies

“…These assignments are based on intensity considerations, the presence of band crossings (only the bands 7 and 12 display a neutron AB alignment with tiw, x 0.25 MeV), the degree of signature splitting, the relative sizes of the dynamic moments of inertia, and B ( M l ) / B ( E 2 ) ratios. We do not concur with the ~h g / 2 @ )~i 1 3 / 2 assignment to band 5 in reference [25], mainly for the following reason. The signature splitting of both of these orbitals is large in the adjacent odd-A nuclei (Ae' 2 160 keV at FLU = 0.15 MeV) but the measured splitting for band 5 small (Ae' = 8 keV).…”

“…Nevertheless, most of the bands reported can be associated with either the K" = 1+ ground state (e.g. the low-K bands 3, 4 and 5) or the tl/2 = 5.1 m K" = 6-isomer [25] (e.9. the high-K yrast band, labeled 6).…”