Neutron halo in deformed nuclei

Zhou, Shan‐Gui; Meng, J.; Ring, P.; Zhao, En-Guang

doi:10.1103/physrevc.82.011301

Cited by 243 publications

(386 citation statements)

References 38 publications

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“…22 C is suggested to be a halo nucleus according to the mea-sured large enhancement of the reaction cross section for it compared to those for neighboring carbon isotopes [84]. We certainly can not reproduce the halo structure for 22 C because in the present work a Harmonic Oscillator basis is used which is not able to give the large spatial density distributions in halo nuclei [85][86][87][88].…”

Section: Shape Evolution Of Carbon Isotopesmentioning

confidence: 93%

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the
Lü
¹
,
Zhao
²
,
Zhou
³

2011
Phys. Rev. C
Self Cite

113

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Quadrupole deformation (β, γ) of light Λ hypernuclei in constrained relativistic mean field model: shape evolution and shape polarization effect of Λ hyperon The shapes of light normal nuclei and Λ hypernuclei are investigated in the (β, γ) deformation plane by using a newly developed constrained relativistic mean field (RMF) model. As examples, the results of some C, Mg, and Si nuclei are presented and discussed in details. We found that for normal nuclei the present RMF calculations and previous Skyrme-Hartree-Fock models predict similar trends of the shape evolution with the neutron number increasing. But some quantitative aspects from these two approaches, such as the depth of the minimum and the softness in the γ direction, differ a lot for several nuclei. For Λ hypernuclei, in most cases, the addition of a Λ hyperon alters slightly the location of the ground state minimum towards the direction of smaller β and softer γ in the potential energy surface E ∼ (β, γ). There are three exceptions, namely, 13 Λ C, 23 Λ C, and 31 Λ Si in which the polarization effect of the additional Λ is so strong that the shapes of these three hypernuclei are drastically different from their corresponding core nuclei.

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Section: Shape Evolution Of Carbon Isotopesmentioning

confidence: 93%

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the
Lü
¹
,
Zhao
²
,
Zhou
³

2011
Phys. Rev. C
Self Cite

113

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“…To explore the deformation effects on the position of neutron drip line, taking argon isotopic chain as an example, the calculations with the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) [59,60] are performed, where the axial deformation, continuum and pairing correlation are treated self-consistently. In the DRHBc calculations, the relativistic density functional PC-PK1 is employed.…”

Section: Discussion On Deformation Effectsmentioning

confidence: 99%

“…The RCHB theory has been generalized to treat the odd nucleon system [57], and together with the Glauber model, the charge-changing cross sections from carbon (C) to fluorine (F) isotopes on a carbon target have been well reproduced [58]. For deformed nuclei, much effort has been made to develop a deformed RHB theory in continuum and an interesting shape decoupling between the core and the halo was predicted [59,60]. Later, the deformed RHB theory in continuum has been extended to incorporate the density-dependent meson-nucleon couplings [61], and the blocking effect which is required for the description of odd-nucleon systems [62].…”

Section: Introductionmentioning

confidence: 99%

The limits of the nuclear landscape explored by the relativistic continuum Hartree–Bogoliubov theory

Xia

Lim

Zhao

et al. 2018

Atomic Data and Nuclear Data Tables

181

126

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The ground-state properties of nuclei with 8 Z 120 from the proton drip line to the neutron drip line have been investigated using the spherical relativistic continuum Hartree-Bogoliubov (RCHB) theory with the relativistic density functional PC-PK1. With the effects of the continuum included, there are totally 9035 nuclei predicted to be bound, which largely extends the existing nuclear landscapes predicted with other methods. The calculated binding energies, separation energies, neutron and proton Fermi surfaces, root-mean-square (rms) radii of neutron, proton, matter, and charge distributions, ground-state spins and parities are tabulated. The extension of the nuclear landscape obtained with RCHB is discussed in detail, in particular for the neutron-rich side, in comparison with the relativistic mean field calculations without pairing correlations and also other predicted landscapes. It is found that the coupling between the bound states and the continuum due to the pairing correlations plays an essential role in extending the nuclear landscape.The systematics of the separation energies, radii, densities, potentials and pairing energies of the RCHB calculations are also discussed. In addition, the α-decay energies and proton emitters based on the RCHB calculations are investigated.

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“…In recent years, the study of nuclear single-particle resonant states, especially those in exotic nuclei with unusual N/Z ratios becomes more and more important [46,47,48,49,50,51,52,53,54]. There have been some numerical studies on the PSS [55,56,57,58] and SS [59] in single particle resonant states.…”

Section: Introductionmentioning

confidence: 99%

Exact conservation and breaking of pseudospin symmetry in single particle resonant states

Lü¹,

Zhao²,

Zhou³

2013

AIP Conference Proceedings

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Abstract. In this contribution we present some results on the study of pseudospin symmetry (PSS) in single particle resonant states. The PSS is a relativistic dynamical symmetry connected with the small component of the nucleon Dirac wave function. Many efforts have been made to study this symmetry in bound states. We recently gave a rigorous justification of the PSS in single particle resonant states by examining the zeros of Jost functions corresponding to the small components of the radial Dirac wave functions and phase shifts of continuum states [1]. We have shown that the PSS in single particle resonant states in nuclei is conserved when the attractive scalar and repulsive vector potentials have the same magnitude but opposite sign. Examples of exact conservation and breaking of this symmetry in single particle resonances are given for spherical square-well and Woods-Saxon potentials.

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Neutron halo in deformed nuclei

Cited by 243 publications

References 38 publications

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the
Lü
¹
,
Zhao
²
,
Zhou
³

2011
Phys. Rev. C
Self Cite

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the
Lü
¹
,
Zhao
²
,
Zhou
³

2011
Phys. Rev. C
Self Cite

The limits of the nuclear landscape explored by the relativistic continuum Hartree–Bogoliubov theory

Exact conservation and breaking of pseudospin symmetry in single particle resonant states

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Neutron halo in deformed nuclei

Cited by 243 publications

References 38 publications

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of theLü1, Zhao2, Zhou3 2011Phys. Rev. CSelf Cite

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of theLü1, Zhao2, Zhou3 2011Phys. Rev. CSelf Cite

The limits of the nuclear landscape explored by the relativistic continuum Hartree–Bogoliubov theory

Exact conservation and breaking of pseudospin symmetry in single particle resonant states

Contact Info

Product

Resources

About

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the
Lü
¹
,
Zhao
²
,
Zhou
³

2011
Phys. Rev. C
Self Cite

Quadrupole deformation(β,γ)of lightΛhypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the
Lü
¹
,
Zhao
²
,
Zhou
³

2011
Phys. Rev. C
Self Cite