Spin dynamics of triaxial odd mass nuclei with quasiparticle alignments

Abstract

Abstract The dynamics of medium odd-mass nuclei with triaxial cores and non-axial rigid quasiparticle alignments is investigated in a semiclassical approach. Quantum observables are computed with a Schrödinger equation, constructed from the classical picture, which has the total angular momentum projection as a continuous variable. The separation of potential energy as a function of the chosen variable allows the phenomenological interpretation of the spectra in terms of wobbling oscillations and tilted axis rotations. The experimental realization of the model is presented for the collective bands of 105 Pd, 133 La and 135 Pr nuclei. In particular, a novel transitional phase associated with a tilted axis wobbling was suggested for the 133 La nucleus.