Neutron halo nuclei

Tanihata, I.

doi:10.1088/0954-3899/22/2/004

Cited by 729 publications

(822 citation statements)

References 96 publications

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“…Developing efficient techniques to investigate scattering states is therefore quite important in the physics of exotic nuclei, and in particular of halo nuclei. 3) In two-body systems, the situation is rather simple, and many accurate methods are available to investigate scattering properties (cross sections, resonance energies and widths, etc.). In contrast, three-body systems are much more difficult to deal with.…”

Section: §1 Introductionmentioning

confidence: 99%

Comparative Study of Three-Body Models for Continuum States

Descouvemont

Pinilla

Baye

2012

Prog. Theor. Phys. Suppl.

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We discuss properties of three-body continuum states in the hyperspherical formalism. The associated coupled-channel system is solved on a Lagrange basis, and is complemented by the R-matrix theory for the treatment of scattering states. Three-body α + n + n phase shifts are determined under various conditions. Two approximations of the continuum are considered: the complex scaling and the pseudostate methods. Both are briefly outlined, and compared with the R-matrix approach for the dipole-strength distribution of 6 He. A fair agreement is obtained between the three methods. We also discuss the influence of the α + n and n + n interactions, as well as the effect of the Pauli principle. Some differences are obtained, but all calculations predict a broad 1 − resonance near 1 MeV. §1.

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Section: §1 Introductionmentioning

confidence: 99%

Comparative Study of Three-Body Models for Continuum States

Descouvemont

Pinilla

Baye

2012

Prog. Theor. Phys. Suppl.

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“…The halo structures of 11 Li, 11 Be, 19 C etc. have been established through such observations [1]. Furthermore, measurements of the momentum distribution are used to investigate the configuration of the valence nucleon(s) for unstable nuclei [2].…”

Section: Introductionmentioning

confidence: 99%

One- and two-neutron removal reactions from19,20C with a proton target

Ozawa¹,

Hashizume²,

Aoki³

et al. 2011

Phys. Rev. C

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One and two-neutron removal-reactions from 19 C and 20 C have been studied using a liquid-hydrogen target at 40 A MeV. A small cross section has been observed in the one-neutron removal reaction from 20 C. The observed inclusive removal cross sections are compared with theoretical removal cross sections calculated by using shell model spectroscopic factors and Glauber-model single-particle cross-sections. The observed momentum distributions are also compared with those calculated by using continuum-discretized coupled-channel methods. Good consistency between theory and experiment is shown in the one-neutron removal reaction from 19 C. However, our theoretical calculation fails to reproduce the neutron removal reactions from 20 C, which suggests that further improvements of the theoretical descriptions are necessary.

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“…At present, efforts are devoted to investigate with such probes highly unstable isotopes at radioactive nuclear beam (RNB) facilities. Since the first experiments [1][2][3][4][5][6], it has been found from analyses of total interaction cross sections that weakly-bound neutron-rich light nuclei, e.g., 6,8 He, 11 Li,14 Be, 17,19 B, have increased sizes that deviate substantially from the R ∼ A 1/3 rule. It was realized (e.g., Refs.…”

Section: Introductionmentioning

confidence: 99%

Charge and matter distributions and form factors of light, medium, and heavy neutron-rich nuclei

et al. 2005

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Results of charge form factors calculations for several unstable neutron-rich isotopes of light, medium, and heavy nuclei (He, Li, Ni, Kr, Sn) are presented and compared to those of stable isotopes in the same isotopic chain. For the lighter isotopes (He and Li) the proton and neutron densities are obtained within a microscopic large-scale shell-model, while for heavier ones Ni, Kr, and Sn the densities are calculated in deformed self-consistent mean-field Skyrme HF+BCS method. We also compare proton densities to matter densities together with their rms radii and diffuseness parameter values. Whenever possible comparison of form factors, densities and rms radii with available experimental data is also performed. Calculations of form factors are carried out both in plane wave Born approximation (PWBA) and in distorted wave Born approximation (DWBA). These form factors are suggested as predictions for the future experiments on the electron-radioactive beam colliders where the effect of the neutron halo or skin on the proton distributions in exotic nuclei is planned to be studied and thereby the various theoretical models of exotic nuclei will be tested.

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Neutron halo nuclei

Cited by 729 publications

References 96 publications

Comparative Study of Three-Body Models for Continuum States

Comparative Study of Three-Body Models for Continuum States

One- and two-neutron removal reactions from19,20C with a proton target

Charge and matter distributions and form factors of light, medium, and heavy neutron-rich nuclei

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