M1bands and intruder bands in113In

Abstract

High spin states in ${}^{113}$In have been established up to 6.2 MeV in excitation energy and to a tentative spin of (43/2${}^{\ensuremath{-}})$ through the reaction ${}^{110}$Pd${(}^{7}$Li, ${4n)}^{113}$In at a beam energy of 40 MeV. In-beam measurements involved $\ensuremath{\gamma}$-$\ensuremath{\gamma}$ coincidences, angular distribution of emitted gamma rays, and directional correlation of oriented states. $M$1 bands consisting of $\ensuremath{\Delta}I=1$ dipole transitions have been observed. Possible quasiparticle configurations suggest that these bands are similar to the shears bands observed in Pb nuclei. Two intruder bands based on the $\ensuremath{\pi}{h}_{11/2}$ orbital and $\ensuremath{\pi}{g}_{7/2}$ orbital have been observed. Results of the total Routhian surface and cranked shell model calculations are compared with the experimental data. Alignment features of the intruder bands in the $N=62$ and 64 isotones are discussed.