Possible antimagnetic rotation bands in ${}^{100}$Pd: a particle-number conserving investigation

Abstract

The particle-number conserving method based on the cranked shell model is adopted to investigate the possible antimagnetic rotation bands in ${}^{100}$Pd. The experimental kinematic and dynamic moments of inertia, together with the $B(E2)$ values are reproduced quite well. The occupation probability of each neutron and proton orbital in the observed antimagnetic rotation band is analyzed and its configuration is confirmed. The contribution of each major shell to the total angular momentum alignment with rotational frequency in the lowest-lying positive and negative parity bands is analyzed. The level crossing mechanism of these bands is understood clearly. The possible antimagnetic rotation in the negative parity $\alpha =0$ branch is predicted, which sensitively depends on the alignment of the neutron ($1g_{7/2}$, $2d_{5/2}$) pseudo-spin partners. The two-shears-like mechanism for this antimagnetic rotation is investigated by examining the closing of the proton hole angular momentum vector towards the neutron angular momentum vector.

arXiv comment17 pages, 7 figures

References in corpus (14)

• Nuclear Ground-State Masses and Deformations
• Nuclear ground-state masses and deformations: FRDM(2012)
• New parametrization for the nuclear covariant energy density functional with point-coupling interaction
• Progress on tilted axis cranking covariant density functional theory for nuclear magnetic and antimagnetic rotation
• Antimagnetic Rotation Band in Nuclei: A Microscopic Description
• Novel structure for magnetic rotation bands in 60Ni
• Description of Multi Quasi Particle Bands by the Tilted Axis Cranking Model
• Multiple Chirality in Nuclear Rotation: A Microscopic View
• Systematics of Anti magnetic rotation in even-even Cd isotopes
• Nuclear superfluidity for antimagnetic rotation in ${}^{105}$Cd and ${}^{106}$Cd
• Rotational excitations in rare-earth nuclei: a comparative study within three cranking models with different mean fields and the treatments of pairing correlations
• Antimagnetic rotation and sudden change of electric quadrupole transition strength in 143Eu
• Evidence of the Antimagnetic rotation in an odd-odd nucleus: The case of 142Eu
• Effects of proton angular momentum alignment on the two-shears-like mechanism in ${}^{101}$Pd