g-factor measurement of the 2738 keV isomer in La135

The g factor of an isomeric state at 2738 keV in La135 has been measured by time differential perturbed angular distribution technique. This isomer was populated in the reaction Te128(B11, 4n)La135 at beam energy of 52 MeV. We performed the large-scale shell-model (LSSM) calculations which successfully describe the low-lying levels and band structures of La135. The measured value of the g factor,−0.049(3), has been compared with the LSSM result to firmly assign the configuration of the isomeric state. The major configuration of 23/2+ state is π(d5/2)⊗ν(h11/2)−2.