Theoretical investigation of the antimagnetic rotation in <sup>104</sup>Pd *

Zhang, Zhenhua

doi:10.1088/1674-1137/43/5/054107

Cited by 7 publications

(2 citation statements)

References 45 publications

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“…In the present work, the particle-number conserving (PNC) method based on the cranked shell model (CSM) [34,35] will be adopted to investigate the possible AMR bands in 100 Pd. Note that with exact particle-number conservation for treating the pairing correlations, successful descriptions have already been archived for the AMR bands in 105,106 Cd [36] and 101,104 Pd [37,38] by PNC-CSM.…”

Section: Introductionmentioning

confidence: 99%

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

Ma,

Zhang

2021

Preprint

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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 α = 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.

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Section: Introductionmentioning

confidence: 99%

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

Ma,

Zhang

2021

Preprint

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“…Note that the SLAP/PNC method has been built into theoretical approaches based on CSM with the Nilsson [28] and Woods-Saxon [90,91] potentials as well as on those based on relativistic [88] and non-relativistic [92] DFTs. These methods have been successful in the description of different nuclear phenomena in rotating nuclei such as odd-even differences in MOI [93], identical bands [94,95], nuclear pairing phase transition [96], antimagnetic rotation [46,[97][98][99], and high-K rotational bands in the rare-earth nuclei [100][101][102][103][104], and rotational bands in actinides [105][106][107][108][109]. Note that similar approaches to treat pairing correlations with exactly conserved particle number can be found in Refs.…”

Section: Introductionmentioning

confidence: 99%

Rotational excitations in rare-earth nuclei: a comparative study within three cranking models with different mean fields and the treatments of pairing correlations

Zhang,

Huang,

Afanasjev

2020

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High-spin rotational bands in rare-earth Er (Z = 68), Tm (Z = 69) and Yb (Z = 70) isotopes are investigated by three different nuclear models. These are (i) the cranked relativistic Hartree-Bogoliubov (CRHB) approach with approximate particle number projection by means of the Lipkin-Nogami (LN) method, (ii) the cranking covariant density functional theory (CDFT) with pairing correlations treated by a shell-model-like approach (SLAP) or the so called particle-number conserving (PNC) method, and (iii) cranked shell model (CSM) based on the Nilsson potential with pairing correlations treated by the PNC method. A detailed comparison between these three models in the description of the ground state rotational bands of even-even Er and Yb isotopes is performed. The similarities and differences between these models in the description of the moments of inertia, the features of band crossings, equilibrium deformations and pairing energies of even-even nuclei under study are discussed. These quantities are considered as a function of rotational frequency and proton and neutron numbers. The changes in the properties of the first band crossings with increasing neutron number in this mass region are investigated. On average, a comparable accuracy of the description of available experimental data is achieved in these models. However, the differences between model predictions become larger above the first band crossings. Because of time-consuming nature of numerical calculations in the CDFT-based models, a systematic study of the rotational properties of both ground state and excited state bands in odd-mass Tm nuclei is carried out only by the PNC-SCM. With few exceptions, the rotational properties of experimental 1-quasiparticle and 3-quasiparticle bands in 165,167,169,171 Tm are reproduced reasonably well. The appearance of backbendings or upbendings in these nuclei is well understood from the analysis of the variations of the occupation probabilities of the single-particle states and their contributions to total angular momentum alignment with rotational frequency.

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Systematic study of magnetic and antimagnetic rotational bands

Teng,

2024

J. Phys. G: Nucl. Part. Phys.

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The magnetic and antimagnetic rotational bands are systematically investigated in the present work. Up to now, 253 magnetic rotational bands and 40 antimagnetic rotational bands have been reported in 123 nuclei and 29 nuclei, respectively. The experimental data for these bands are collected and collated, including the level energy, γ-ray energies, spin I, magnetic dipole reduced transition probability B(M1), electric quadrupole reduced transition probability B(E2), B(M1)/B(E2), and J (2)/B(E2), etc. In addition, following the presentation of the kinematic moment of inertia J (1), dynamic moment of inertia J (2), and I versus rotational frequency ω, as well as energy staggering parameter S(I), B(M1), B(E2), B(M1)/B(E2), and J (2)/B(E2) versus I in A ∼ 60, 80, 110, 140, and 190 mass regions, a discussion is provided in detail. Based on the systematic studies, the main features of magnetic and antimagnetic rotational bands are summarized. Furthermore, some nuclei are also predicted to be candidates for magnetic or antimagnetic rotation.

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Theoretical investigation of the antimagnetic rotation in ¹⁰⁴Pd *

Cited by 7 publications

References 45 publications

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

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

Rotational excitations in rare-earth nuclei: a comparative study within three cranking models with different mean fields and the treatments of pairing correlations

Systematic study of magnetic and antimagnetic rotational bands

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Theoretical investigation of the antimagnetic rotation in 104Pd *

Cited by 7 publications

References 45 publications

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

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

Rotational excitations in rare-earth nuclei: a comparative study within three cranking models with different mean fields and the treatments of pairing correlations

Systematic study of magnetic and antimagnetic rotational bands

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Theoretical investigation of the antimagnetic rotation in ¹⁰⁴Pd *