Band structure in the neutron-rich lanthanide nucleus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Nd</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>152</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>. I. Anomalous properties of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant=

Hellström, M.; Fogelberg, B.; Mach, H.; Jerrestam, D.; Spanier, L.

doi:10.1103/physrevc.46.860

Cited by 9 publications

(8 citation statements)

References 28 publications

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“…[6][7][8]10,11] [9]. The excitation energy of the band head energy at or above the paring energy gap indicates that this assignment is possible [9].…”

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High-spin states and a new band based on the isomeric state in 152Nd

et al. 2010

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Abstract. High-spin states of the neutron-rich152 Nd nucleus have been reinvestigated by measuring the prompt γ-rays in the spontaneous fission of 252 Cf. The ground-state band and a side negative-parity band have been updated. A new band based on the 2243.7 keV isomeric state has been identified. The half-life for the isomeric state has been measured to be 63(7) ns. The projected shell model is employed to study the band structure of this nucleus. The results show that the calculated levels of the bands are in good agreement with the experimental ones, and the isomeric state and the negative-parity band are based on the proton π5/ The neutron-rich nuclei around the A ∼ 150 region show transitional character from spherical to prolate quadrupole deformation and from octupole vibrational excitations to static octupole deformation [1][2][3][4][5].152 Nd is located in the deformed region and has a well-deformed shape. Previously, the level structure of 152 Nd has been studied by using various experimental methods [6][7][8][9][10][11][12]. The ground-state band and a negative-parity band based on a 2 − state have been identified. In addition, the identification of the K isomeric states and the bands built on the isomers is a very important topic in this region. In a recent publication, two-quasiparticle (2-qp) isomeric states and bands based on the isomers have been reported in 154,156 Nd and 156,158,160 Sm [13]. For 152 Nd, an isomeric state was also reported in ref.[11], but no band structure based on that isomer was observed. In order to understand the systematic structural characteristics and to search for the isomeric band, we reinvestigated the high-spin states of 152 Nd. Here we report our new result. To study high-spin states of 152 Nd, the γ-rays in the spontaneous fission of 252 Cf were measured. These γ-rays include prompt γ-rays emitted after their formation in spontaneous fission and delayed γ-rays from β-decay. The a

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“…[6][7][8]10,11] [9]. The excitation energy of the band head energy at or above the paring energy gap indicates that this assignment is possible [9].…”

mentioning

confidence: 99%

“…Previously, the level structure of 152 Nd has been studied by using various experimental methods [6][7][8][9][10][11][12]. The ground-state band and a negative-parity band based on a 2 − state have been identified.…”

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confidence: 99%

High-spin states and a new band based on the isomeric state in 152Nd

et al. 2010

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“…This kind of structure of qp states and the rotational bands built on them are of current interest. Historically, two qp states in 156,158,160 Sm and 152,154,156 Nd have been studied by γ-ray spectroscopy following β-decay [1,2] and spontaneous and induced fission [3][4][5][6][7]. Lifetimes have been measured for some qp states and physical quantities have been compared systematically for the rotational bands built on them.…”

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confidence: 99%

Identification of a possible proton two-quasiparticle band inSm158

et al. 2014

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“…Note, that both, energies and B(E2) values for the excited k=0 band in the CBS model, represent model predictions without any further parameter adjustment. Figure 3 shows the same spectra for the nucleus 152 Nd [19]. In this case, only few data is available.…”

Section: Description Of K=0 Bands and Their Centrifugal Stretchingmentioning

confidence: 99%

Comparison of the confined β-soft rotor model and a microscopic collective Hamiltonian based on the relativistic mean field model in^{150, 152}Nd

Krugmann¹,

Li²,

Meng³

et al. 2011

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

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A comparison between the analytical wavefunction of the Confined βsoft Rotor Model and a collective Hamiltonian based on the relativistic mean field model has been performed for the low lying states in the ground state band and βband of the nuclei 150,152 Nd. A remarkable similarity of the two models in energies, intra-and interband B(E2)-values and centrifugal stretching has been observed. In the transitional nucleus 150 Nd the relative stretching is about 0.025/ whereas the rotational nucleus 152 Nd with a much stiffer potential in the quadrupole deformation parameter β stretches with approximately 0.01/. The centroids of the wave functions almost exactly coincide in the two models for the ground state band and also for the β-band. The Ansatz in the CBS model of an outer potential wall that stays almost constant with increasing number of valence neutrons and an inner wall that shifts to higher deformations has been successfully justified microscopically.

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Band structure in the neutron-rich lanthanide nucleusNd152. I. Anomalous properties of the

Cited by 9 publications

References 28 publications

High-spin states and a new band based on the isomeric state in 152Nd

High-spin states and a new band based on the isomeric state in 152Nd

Identification of a possible proton two-quasiparticle band inSm158

Comparison of the confined β-soft rotor model and a microscopic collective Hamiltonian based on the relativistic mean field model in^{150, 152}Nd

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Band structure in the neutron-rich lanthanide nucleusNd152. I. Anomalous properties of the

Cited by 9 publications

References 28 publications

High-spin states and a new band based on the isomeric state in 152Nd

High-spin states and a new band based on the isomeric state in 152Nd

Identification of a possible proton two-quasiparticle band inSm158

Comparison of the confined β-soft rotor model and a microscopic collective Hamiltonian based on the relativistic mean field model in150, 152Nd

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Comparison of the confined β-soft rotor model and a microscopic collective Hamiltonian based on the relativistic mean field model in^{150, 152}Nd