Phys.Rev. C 91, 044301 (2015)

M.Rudigier, K.Nomura, M.Dannhoff, R-B.Gerst, J.Jolie, N.Saed-Samii, S.Stegemann, J.-M.Regis, L.M.Robledo, R.Rodriguez-Guzman, A.Blazhev, Ch.Fransen, N.Warr, K.O.Zell

Evolution of E2 transition strength in deformed hafnium isotopes from new measurements on ¹⁷²Hf, ¹⁷⁴Hf, and ¹⁷⁶Hf

NUCLEAR REACTIONS ^170,172Yb(α, 2n), E=27 MeV; ¹⁷⁴Yb(α, 2n), E=26 MeV; measured conversion-electron momentum spectra using Cologne Orange magnetic spectrometer, Eγ, Iγ, γγ-, (ce)γγ-coin, level half-lives by (ce)γ(t) and γγ(t) methods with emphasis on the first 2+ states. ^172,174,176Hf; deduced levels, J, π, B(E2). Comparison with previous results, and with theoretical model calculations.

NUCLEAR STRUCTURE ^{168,170,172,174,176,178,180}Hf; calculated contour plots of the deformation energy surfaces in (β, γ) plane for ¹⁶⁸Hf to ¹⁷⁶Hf, parameters for the IBM Hamiltonian, levels, J, π, moments of inertia and B(E2) for levels in the ground-state rotational band. Interacting boson model with Hamiltonian from Gogny HFB calculations using the D1M interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.044301