Charge Densities of Unstable Nuclei with Electron Scattering

Chu, Y. J.; Ren, Zhongzhou; Wang, Zaijun; Dong, Ting

doi:10.1088/0253-6102/54/2/26

Cited by 2 publications

(5 citation statements)

References 56 publications

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“…Both quantities together are essential to properly reproduce the experimental charge rms radius. Theoretical studies on elastic electron scattering by exotic nuclei [164,165,166,167,163] have recently been fostered by projects such as SCRIT [161] or ELISe [162].…”

Section: Proton Density Distributionsmentioning

confidence: 99%

Nuclear equation of state from ground and collective excited state properties of nuclei

Roca-Maza

Paar

2018

Progress in Particle and Nuclear Physics

196

110

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This contribution reviews the present status on the available constraints to the nuclear equation of state (EoS) around saturation density from nuclear structure calculations on ground and collective excited state properties of atomic nuclei. It concentrates on predictions based on self-consistent mean-field calculations, which can be considered as an approximate realization of an exact energy density functional (EDF). EDFs are derived from effective interactions commonly fitted to nuclear masses, charge radii and, in many cases, also to pseudo-data such as nuclear matter properties. Although in a model dependent way, EDFs constitute nowadays a unique tool to reliably and consistently access bulk ground state and collective excited state properties of atomic nuclei along the nuclear chart as well as the EoS. For comparison, some emphasis is also given to the results obtained with the so called ab initio approaches that aim at describing the nuclear EoS based on interactions fitted to few-body data only. Bridging the existent gap between these two frameworks will be essential since it may allow to improve our understanding on the diverse phenomenology observed in nuclei. Examples on observations from astrophysical objects and processes sensitive to the nuclear EoS are also briefly discussed. As the main conclusion, the isospin dependence of the nuclear EoS around saturation density and, to a lesser extent, the nuclear matter incompressibility remain to be accurately determined. Experimental and theoretical efforts in finding and measuring observables specially sensitive to the EoS properties are of paramount importance, not only for low-energy nuclear physics but also for nuclear astrophysics applications. 7 The expression introduced by Migdal in Ref. [43] neglected the term in a AS . 8 From a macroscopic picture it would correspond to an isotropic compression. 9 From a macroscopic picture it would correspond to a non-isotropic compression. 15

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Section: Proton Density Distributionsmentioning

confidence: 99%

Nuclear equation of state from ground and collective excited state properties of nuclei

Roca-Maza

Paar

2018

Progress in Particle and Nuclear Physics

196

110

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“…The charge density corresponding to C0 form factor is displayed in Fig.3(a) as dashed line in comparison with that of 8 B (solid line). It is seen from this figure that the charge density distributions of 8,10 B are different although the two nuclei have the same proton number. The proton form factors for 8 B halo nucleus and 10 B stable nucleus are shown in Fig.…”

Section: Theorymentioning

confidence: 94%

“…A lot of works have been devoted to study the properties of halo nuclei [2][3][4][5][6][7]. From the theoretical point of view, nuclear halo is a quantum effect, and it arises from extraordinarily extended distribution of weakly bounded valence nucleons [8].…”

Section: Introductionmentioning

confidence: 99%

“…Calculations using different models [9,10] demonstrate that there may be proton halo in the ground state of [26][27] P, 8 B, 17 Ne and in the excited states of 6 Li and 17 F. One of the candidates for a proton-halo nucleus is 8 B. The experimental results for its structure are somewhat controversial [11].…”

mentioning

confidence: 99%

“…Depending on the experimental method and the energy of the incident beam different results are obtained. Measurements of the total interaction and reaction cross sections at energies above ≈140MeV/u did not give evidence for an extended matter distribution in 8 B [12][13][14], while later measurements of total reaction cross sections at 20-60MeV/u were interpreted as evidence for a long lowdensity tail in the density distributions [15]. The measurements of the momentum distributions of the break-up fragments show narrow peaks which also supports a halo structure [16,17].…”

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confidence: 99%

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Density distributions and form factors of the exotic 8B nucleus

Majeed¹

2019

IJP

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Results of charge, neutron and matter densities and related form factors for one- proton halo nucleus 8B are presented using a two- frequency shell model approach. We choose a model space for the core of 7Be different from that of the extra one valence proton. One configuration is assumed for the outer proton to be in 1p1/2 - shell. The results of the matter density distributions are compared with those fitted to the experimental data. The calculated proton and matter density distributions of this exotic nucleus exhibit a long tail behavior, which is considered as a distinctive feature of halo nuclei. Elastic electron scattering form factors of this exotic nucleus are also studied. The effects of the proton halo on the electron scattering form factors are analyzed. The form factors of the exotic unstable 8B nucleus are compared with those of the stable 10B nucleus. The differences between the results of unstable 8B and stable 10B nuclei come from the long tail in the density distribution of the last proton.

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Charge Densities of Unstable Nuclei with Electron Scattering

Cited by 2 publications

References 56 publications

Nuclear equation of state from ground and collective excited state properties of nuclei

Nuclear equation of state from ground and collective excited state properties of nuclei

Density distributions and form factors of the exotic 8B nucleus

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