Abstract
High-spin states in 123Cs, populated via the 100Mo ( 28Si, p4n) fusion-evaporation reaction at Elab = 130 MeV, have been investigated employing in-beam γ-ray spectroscopic techniques. Rotational bands, built on πg7/2, πg9/2 and the unique-parity πh11/2 orbitals, have been extended and evolve into bands involving rotationally aligned ν(h11/2)2 and π(h11/2)2 quasiparticles. A three-quasiparticle band based on the high-K πh11/2 ⊗ νg7/2 ⊗ νh11/2 configuration has also been observed. Total Routhian Surface (TRS) calculations have been used to predict the nuclear shape parameters ( β2, β4, γ) for the various assigned configurations. The assigned configurations have been discussed in the framework of a microscopic theory based on the deformed Hartree-Fock (HF) and angular-momentum projection techniques.
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