Shell model description of the core excited level structure of $$^{89}$$Sr nucleus and systematic features of the $$N=51$$ odd-A isotones

Wu, Yi Heng; Yan, Ke; Cheng, Fei; Cai, Xue Yuan

doi:10.1007/s12043-020-1917-x

Cited by 3 publications

(3 citation statements)

References 30 publications

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“…The study on level structures is significantly interesting in weakly deformed and nearly spherical nuclei [1][2][3][4][5][6][7][8][9]. In particular, the nuclei with in the mass region provide a suitable laboratory to study the mechanism of particle-hole excitations.…”

Section: Introduction N ∼ 50mentioning

confidence: 99%

Core breaking and possible magnetic rotation in the semimagic nucleus ⁹⁰Zr *

Wang

Liu

et al. 2021

Chinese Phys. C

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The semimagic nucleus 90Zr, with Z = 40 and N = 50, is investigated in terms of large scale shell model calculations. A logical agreement is obtained between the available experimental data and predicted values. The calculated results indicate that the low-lying states are primarily dominated by the proton excitations from the fp orbitals across the Z = 38 or 40 subshell into the high-j orbital. For the higher-spin states of 90Zr, the breaking of the N = 50 core plays a crucial role, and the contribution of different orbitals to each state are discussed in this article. The evolution from neutron core excitations to proton excitations is systematically studied along the neighboring N = 50 isotones. Furthermore, the strong = 1 sequence demonstrates an abrupt backbend attributed to the alignment of the valence nucleons in fp proton orbitals and is proposed to have a configuration before the backbend, based on the shell model calculations. The properties of this sequence before the backbend indicate a general agreement with the fingerprints of magnetic rotation; hence, the sequence with the configuration is suggested as a magnetic rotational band arising from shears mechanism.

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Section: Introduction N ∼ 50mentioning

confidence: 99%

Core breaking and possible magnetic rotation in the semimagic nucleus ⁹⁰Zr *

Wang

Liu

et al. 2021

Chinese Phys. C

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“…However, there are relatively few studies on the neighboring Mo isotopes around the N = 50 magic shell closure, especially on the N = 51 nucleus Mo. The previous theoretical studies on the Mo nucleus have largely focused on several low-lying levels using a small truncation space, i.e., they have ignored certain orbitals, such as the proton 1 [8] and neutron 1 [8,20] and 1 [20] orbitals. Nevertheless, these orbitals play an important role in the neighboring N = 51 isotones, where the excited states are principally generated via three different mechanisms: (a) (…”

Section: Introductionmentioning

confidence: 99%

“…proton excitations, (b) 1 2 neutron-core excitation, and (c) 2 1 neutron excitation [15][16][17][18][19][20][21][22][23]. Thus, to adequately describe the level structures of Mo, the proton 1 and neutron (1 , 1 ) orbitals must be considered in the calculations.…”

Section: Introductionmentioning

confidence: 99%

Multi-quasiparticle excitations and the impact of the high-j intruder orbital in the N = 51 ⁹³Mo nucleus *

Wang¹,

Ma²,

Wu³

et al. 2021

Chinese Phys. C

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The level structures of Mo are investigated using Large Scale Shell Model calculations, and reasonable agreement is obtained between the experimental and calculated values. The calculated results show that the lower-lying states are mainly dominated by proton excitations from the , , and orbitals into the higher orbitals across the Z = 38 or Z = 40 subshell closure. For the higher-spin states, multi-particle excitations, including the excitation of neutrons across the N = 56 subshell closure into the high-j intruder orbital, are essential. Moreover, the previously unknown spin-parity assignments of the six higher excited states in Mo are inferred from the shell model calculations.

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Level scheme of Nb92 and observation of an oblate collective rotational band

Ren,

Lu,

Dong

et al. 2023

Phys. Rev. C

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Shell model description of the core excited level structure of $$^{89}$$Sr nucleus and systematic features of the $$N=51$$ odd-A isotones

Cited by 3 publications

References 30 publications

Core breaking and possible magnetic rotation in the semimagic nucleus ⁹⁰Zr *

Core breaking and possible magnetic rotation in the semimagic nucleus ⁹⁰Zr *

Multi-quasiparticle excitations and the impact of the high-j intruder orbital in the N = 51 ⁹³Mo nucleus *

Level scheme of Nb92 and observation of an oblate collective rotational band

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Shell model description of the core excited level structure of $$^{89}$$Sr nucleus and systematic features of the $$N=51$$ odd-A isotones

Cited by 3 publications

References 30 publications

Core breaking and possible magnetic rotation in the semimagic nucleus 90Zr *

Core breaking and possible magnetic rotation in the semimagic nucleus 90Zr *

Multi-quasiparticle excitations and the impact of the high-j intruder orbital in the N = 51 93Mo nucleus *

Level scheme of Nb92 and observation of an oblate collective rotational band

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Product

Resources

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Core breaking and possible magnetic rotation in the semimagic nucleus ⁹⁰Zr *

Core breaking and possible magnetic rotation in the semimagic nucleus ⁹⁰Zr *

Multi-quasiparticle excitations and the impact of the high-j intruder orbital in the N = 51 ⁹³Mo nucleus *