Abstract
M1 transitions between low-energy quadrupole excitations of the valence shell are often used as the signature for states of proton-neutron mixed-symmetry character. Starting from the Skyrme interaction together with the volume pairing interaction, we study the properties of the excitations of . The coupling between one- and two-phonon terms in the wave functions of excited states is taken into account. Our calculations are performed within the finite-rank separable approximation, which enables one to perform quasiparticle random phase approximation calculations in very large two-quasiparticle configurational spaces. Using the same set of parameters we describe available experimental data and give the prediction for , in comparison to in the case of .
- Received 3 April 2014
- Revised 4 July 2014
DOI:https://doi.org/10.1103/PhysRevC.90.011306
©2014 American Physical Society