Octupole Deformation in ODD-ODD Nuclei 154,156Eu

Low-lying levels of 188Re nucleus from γγ-coincidence measurements

“…where A 0 =h 2 /(2J ) is the moment of inertia parameter of the nuclear core, h p J , h n J , h p a , and h n a are the usual recoil and Coriolis decoupling terms of the proton and neutron intrinsic angular momenta (see, e.g., [22,20]), while A res is a direct, and B res -an exchange matrix element of the residual neutron-proton interaction with potential V np . The quasiparticle energies E Ω p ,a p qp and E Ω n ,a n qp , and wave functions χ Ω p ,a p and χ Ω n ,a n of the valence proton and neutron states are calculated employing the modified Nilsson potential [23] and the standard BCS procedure.…”

“…The adiabatic energy expression of QRVM in the case of two valence particles, one can find, e.g., in [21]; the complete expressions for Eq. (2) matrix elements are given in [22].…”

“…Then, if one disregards the mixing of two-quasiparticle states, one can evaluate theoretical level energies using expression [22]:…”