Bulg. J. Phys. vol.46 no.4 (2019), pp. 415-423

Chiral Bands with Rigid Quasiparticle Alignments

R. Budaca1,2
"Horia Hulubei'' National Institute for Physics and Nuclear Engineering, Str. Reactorului 30, RO-077125, POB-MG6 Bucharest-Măgurele, Romania
Abstract. A triaxial particle-rotor Hamiltonian describing a system of two high-j quasiparticles rigidly aligned to a triaxial collective core, is treated semiclassically within a time-dependent variational principle. Quantizing the energy function for a given angular momentum, one obtains a Schrödinger equation with a coordinate dependent effective mass for a chiral potential. The applicability of the formalism is discussed in terms of varying triaxial deformation and more general quasiparticle spin alignments. The model is exemplified by describing the partner bands in 134Pr using the corresponding spectrum and wave-functions obtained for valence h11/2 proton particle and h11/2 neutron hole. Some perspectives of the model are also briefly discussed.

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