Shears structure in odd-odd ^108,110_ 49In

The high-spin states of ^108In and ^110In were populated via the reactions ^76Ge(^37Cl,5n) and ^96Zr(^19F,5n), respectively. Thin targets were used in both experiments to extend collective structures to high spin, with γ-γ coincidence events being collected with the 8π array at Chalk River. Cuts were placed on the total energy of the reaction to enhance the 5n channels. A complementary backed target experiment was performed with the Stony Brook 6-detector suppressed Ge array, also using the reaction ^96Zr(^19F,5n)^110In, to provide higher resolution for low-spin states and permit DCO measurements. The level schemes for ^108,110In have been extended to higher spin and new Δ I=1 and Δ I=2 structures have been observed. Neutron-deficient _49In isotopes are believed to be good candidates for low-deformation shears bands (magnetic rotation), as they have perpendicular proton hole and neutron spin vectors without the need for deformation-driving proton excitations to generate strongly coupled bands. The Δ I=1 bands in these two nuclei have been compared with Tilted Axis Cranking calculations based on π(g_9/2)^-1øtimesν(g_7/2)^n(h_11/2)^3-n configurations.