Neutron halo in 11Be studied via reaction cross sections

Fukuda, Mitsuhiro; Ichihara, T.; Inabe, N.; Kubo, T.; Kumagai, Hiroshi; Nakagawa, T.; Yano, Y.; Tanihata, I.; Adachi, Minoru; Asahı, K.; Kouguchi, M.; Ishihara, M.; Sagawa, H.; Shimoura, S.

doi:10.1016/0370-2693(91)91587-l

Cited by 221 publications

(109 citation statements)

References 13 publications

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“…In all cases the asymptotic conditions [Eq. (17)] are met rather quickly. The radial form factors R ℓΛnexc (r) appearing in the multipole decomposition [Eq.…”

Section: A Radial Properties Of Deformed Orbitalsmentioning

confidence: 99%

Deformed nuclear halos

1997

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Deformation properties of weakly bound nuclei are discussed in the deformed single-particle model. It is demonstrated that in the limit of a very small binding energy the valence particles in specific orbitals, characterized by a very small projection of single-particle angular momentum onto the symmetry axis of a nucleus, can give rise to the halo structure which is completely decoupled from the rest of the system. The quadrupole deformation of the resulting halo is completely determined by the intrinsic structure of a weakly bound orbital, irrespective of the shape of the core.

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“…In all cases the asymptotic conditions [Eq. (17)] are met rather quickly. The radial form factors R ℓΛnexc (r) appearing in the multipole decomposition [Eq.…”

Section: A Radial Properties Of Deformed Orbitalsmentioning

confidence: 99%

Deformed nuclear halos

1997

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“…To this end we use the model in which 11 Be consists of a core of 10 Be and a halo formed by a motion of a neutron in its periphery (e.g., Refs. [53][54][55]). The latter model is justified by the small separation energy S n = 504 ± 6 KeV of a neutron from the ground s 1/2 state of 11 Be [56] and on the observed quite large total interaction cross sections of 11 Be with target nuclei caused by the main contribution from the breakup of 11 Be on 10 Be and a neutron.…”

Section: Introductionmentioning

confidence: 99%

Microscopic analysis ofBe10,11elastic scattering on protons and nuclei, and breakup processes ofBe<

et al. 2015

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The density distributions of 10 Be and 11 Be nuclei obtained within the quantum Monte Carlo (QMC) model and the generator coordinate method (GCM) are used to calculate the microscopic optical potentials (OPs) and cross sections of elastic scattering of these nuclei on protons and 12 C at energies E < 100 MeV/nucleon. The real part of the OP is calculated using the folding model with the exchange terms included, while the imaginary part of the OP that reproduces the phase of scattering is obtained in the high-energy approximation (HEA). In this hybrid model of OP the free parameters are the depths of the real and imaginary parts obtained by fitting the experimental data. The well known energy dependence of the volume integrals is used as a physical constraint to resolve the ambiguities of the parameter values. The role of the spin-orbit potential and the surface contribution to the OP is studied for an adequate description of available experimental elastic scattering cross section data. Also, the cluster model, in which 11 Be consists of a n-halo and the 10 Be core, is adopted. Within the latter, the breakup cross sections of 11 Be nucleus on 9 Be, 93 Nb, 181 Ta, and 238 U targets and momentum distributions of 10 Be fragments are calculated and compared with the existing experimental data.

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“…The reaction cross section data are taken from Refs. [26,45] for 13 C, from Ref. [46] for 14,15 C and from Refs.…”

Section: Appendix: Calculation Of a Two-particle Distribution Func-tionmentioning

confidence: 99%

Erratum: Systematic analysis of reaction cross sections of carbon isotopes [Phys. Rev. C75, 044607 (2007)]

Horiuchi¹,

Suzuki²,

Abu-Ibrahim³

et al. 2007

Phys. Rev. C

138

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We systematically analyze total reaction cross sections of carbon isotopes with N = 6-16 on a 12 C target for wide range of incident energy. The intrinsic structure of the carbon isotope is described by a Slater determinant generated from a phenomenological mean-field potential, which reasonably well reproduces the ground state properties for most of the even N isotopes. We need separate studies not only for odd nuclei but also for 16 C and 22 C. The density of the carbon isotope is constructed by eliminating the effect of the center of mass motion. For the calculations of the cross sections, we take two schemes: one is the Glauber approximation, and the other is the eikonal model using a global optical potential. We find that both of the schemes successfully reproduce low and high incident energy data on the cross sections of 12 C, 13 C and 16 C on 12 C. The calculated reaction cross sections of 15 C are found to be considerably smaller than the empirical values observed at low energy. We find a consistent parameterization of the nucleon-nucleon scattering amplitude, differently from previous ones. Finally, we predict the total reaction cross section of 22 C on 12 C.

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Neutron halo in 11Be studied via reaction cross sections

Cited by 221 publications

References 13 publications

Deformed nuclear halos

Deformed nuclear halos

Microscopic analysis ofBe10,11elastic scattering on protons and nuclei, and breakup processes ofBe<

Erratum: Systematic analysis of reaction cross sections of carbon isotopes [Phys. Rev. C75, 044607 (2007)]

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