6533b825fe1ef96bd1283106

RESEARCH PRODUCT

Evidence for Shears Bands in108Cd

subject

description

High-spin states were populated in ${}^{108}\mathrm{Cd}$ using the ${}^{96}\mathrm{Zr}{(}^{16}\mathrm{O},4n)$ reaction at a beam energy of 72 MeV. Two magnetic dipole bands have been observed, both of which contain weak $E2$ crossover transitions. Lifetimes for the stronger of the two bands were measured via the Doppler shift attenuation method. The configuration assignment for this band has been determined from comparison with tilted axis cranking model calculations to be $\ensuremath{\pi}[{g}_{9/2}^{\ensuremath{-}3}{g}_{7/2}]\ensuremath{\bigotimes}\ensuremath{\nu}[{h}_{11/2}{(g}_{7/2}{d}_{5/2}{)}^{1}]$ and $\ensuremath{\pi}[{g}_{9/2}^{\ensuremath{-}3}{g}_{7/2}]\ensuremath{\bigotimes}\ensuremath{\nu}[{h}_{11/2}^{3}{(g}_{7/2}{d}_{5/2}{)}^{1}],$ before and after the $\ensuremath{\nu}{h}_{11/2}^{2}$ band crossing, respectively. The deduced $B(M1)$ strengths decrease rapidly with increasing spin after the $\ensuremath{\nu}{\mathrm{h}}_{11/2}^{2}$ alignment, which is a characteristic behavior of a shears band.