Three-quasiparticle isomers and possible deformation in the transitional nuclide,195Au

Abstract

Deep-inelastic reactions and γ-ray spectroscopy have been used to study excited states in 195 Au. A three-quasiparticle isomer with a mean-life of 18.6(3) µs has been assigned at 2461 + ∆ keV, with decays into newly identified structures.

Multi-quasiparticle High-$K$ States and Their Rotations

“…In some cases (particularly in heavy mass regions), however, higher-order deformations may need to be considered, e.g., β 6 and β 8 , or reflection-asymmetric octupole deformation β 3 [14,20,21]. The γ deformation can also play an important role in the description of nuclear collective rotation [17,22,23] and high-K excitations [24][25][26][27][28]. The γ deformation results in K mixing [29][30][31].…”

“…The TRS is calculated in a lattice of deformations (β 2 , γ, β 4 ). The γ deformation can play an important role in the description of nuclear collective rotation [17,22,23] and high-K excitations [24][25][26][27][28], leading to K mixing [29][30][31]. The configuration-constrained calculation is achieved by identifying and tracking the given single-particle orbits using calculated average Nilsson numbers.…”