Effects of proton angular momentum alignment on the two-shears-like mechanism in ${}^{101}$Pd

Abstract

The recently observed possible antimagnetic rotation band in ${}^{101}$Pd is investigated by the cranked shell model with pairing correlations treated by a particle-number conserving method, in which the blocking effects are taken into account exactly. The experimental moments of inertia and reduced $B(E2)$ transition probabilities and their variations with the rotational frequency $\omega$ are well reproduced. By analyzing the $\omega$-dependence of the occupation probability of each cranked Nilsson orbital near the Fermi surface and the contributions of valence orbitals in each major shell to the total angular momentum alignment, the upbending mechanism of $\nu h_{11/2}$ in ${}^{101}$Pd is understood clearly. The proton angular momentum alignment and its influence on the two-shears-like mechanism are also discussed.

arXiv comment8 pages, 8 figures, to be appear in Physical Review C. arXiv admin note: substantial text overlap with arXiv:1303.3346

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Cited by in corpus (7)

• Shell-model-like approach based on cranking covariant density functional theory: bandcrossing and shape evolution in ${}^{60}$Fe
• Rotational excitations in rare-earth nuclei: a comparative study within three cranking models with different mean fields and the treatments of pairing correlations
• Systematic investigation of the high-$K$ isomers and the high-spin rotational bands in the neutron rich Nd and Sm isotopes by a particle-number conserving method
• Theoretical investigation of the antimagnetic rotation in ${}^{104}$Pd
• Possible antimagnetic rotation bands in ${}^{100}$Pd: a particle-number conserving investigation
• Thermodynamics of pairing transition for Odd-A nuclei
• Band crossings in ${}^{168}$Ta: a particle-number conserving analysis