The low-spin structure of 93Nb has been studied using the 93Nb(γ,γ′), 93Nb(n,n′γ) and 94Zr(p,2nγγ)93Nb reactions. Lifetimes were determined from both 93Nb(γ,γ′) and 93Nb(n,n′γ) measurements. Branching ratios were measured, and multipolarities and spin assignments were determined from the 94Zr(p,2nγγ)93Nb angular correlation experiment. From M1and E2 strengths,the Jπ=9/2+ and 7/2+ states at 1297.1 keV and 1483.6 keV, respectively, are proposed as members of the quintet of mixed-symmetry states associated with the π1g9/2⊗(2+1,MS,92Zr) configuration. The large B(M1)values determined in93Nb cannot be explained within the weak coupling limit of the interacting boson fermion model.
Orce, J. N., Fransen, C., Linnemann, A., Mckay, C. J., Lesher, S. R., Pietralla, N., Werner, V., Friessner, G., Kohstall, C., Muecher, D., Pitz, H. H., Scheck, M.
, Scholl, C., Stedile, F., Warr, N., Walter, S., von Brentano, P., Kneissl, U., McEllistrem, M. T., & Yates, S. W. (2007). Lifetime measurements in Nb-93 from photon and inelastic neutron scattering
. Physical Review C
(1), . https://doi.org/10.1103/PhysRevC.75.014303