Density distribution of 8B studied via reaction cross sections

Fukuda, M.; Mihara, M.; Fukao, T.; Fukuda, Satoshi; Ishihara, M.; Ito, S.; Kobayashi, Toshio; Matsuta, K.; Minamisono, T.; Momota, S.; Nakamura, Takashi; Nojiri, Y.; Ogawa, Yoko; Ohtsubo, T.; Onishi, T.; Ozawa, A.; Suzuki, Tomokazu; Tanigaki, M.; Tanihata, I.; Yoshida, Kôichi

doi:10.1016/s0375-9474(99)00308-5

Cited by 88 publications

(43 citation statements)

References 41 publications

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“…In principle, this correction is based on the same replacement of the impact parameter b by b c mentioned above and the results obtained in Ref. [69] for the breakup of 15 C on Pb at 20 MeV/nucleon confirm the ability of the eikonal approximation to be reliably extended to low energies.…”

Section: Results Of Calculations Of Breakup Reactionssupporting

confidence: 57%

“…from Refs. [11,15], for the effective rms radii of the point-proton, point-neutron and matter distributions deduced from the Glauber analysis of the interaction and reaction cross sections. One can see from Table 1 that the values of the proton and matter rms radii in the case of VMC density are close to the "empirical" values for 8 B, while the neutron radius obtained in the 3CM almost coincides with the experimental value.…”

Section: Results Of Calculations Of Elastic Scattering Cross Sectionsmentioning

confidence: 99%

“…The relativistic mean-field calculations of the rms radii performed systematically for light isotopes (A < 40) show that 8 B has a large proton matter radius compared to its neutron matter radius [13]. The enhanced reaction cross section extracted by angular distribution measurements at intermediate energies [14,15,16] and the large proton-removal cross section at relativistic and intermediate energies with targets ranging from carbon to lead nuclei [14,17,18] support a halo structure of 8 B. A radius of the matter density of 2.7 fm, i.e., much larger than the prediction of any self-consistent calculation is shown to explain the experimental quadrupole moment of 8 B [19,20].…”

Section: Introductionmentioning

confidence: 98%

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Probing the exotic structure of 8B by its elastic scattering and breakup reaction on nuclear targets

et al. 2017

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Abstract. The structure of the exotic 8 B nucleus is studied by means of elastic scattering, as well as its breakup on nuclear targets. We present microscopic calculations of the optical potentials (OPs) and cross sections of elastic scattering of 8 B on 12 C, 58 Ni, and 208 Pb targets at energies 20 < E < 170 MeV. The density distributions of 8 B obtained within the variational Monte Carlo (VMC) model and the three-cluster model (3CM) are used to construct the potentials. The real part of the hybrid OP is calculated using the folding model with the direct and exchange terms included, while the imaginary part is obtained on the base of the high-energy approximation (HEA) and also taken to be equal to the microscopic real part of the OP. In this model the only free parameters are the depths of the real and imaginary parts of OP obtained by fitting the elastic scattering experimental data. It is found a dependence of their values on the model density of 8 B. In addition, cluster model, in which 8

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Section: Results Of Calculations Of Breakup Reactionssupporting

confidence: 57%

Section: Results Of Calculations Of Elastic Scattering Cross Sectionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Probing the exotic structure of 8B by its elastic scattering and breakup reaction on nuclear targets

et al. 2017

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“…With this setup, incoming particles can be completely separated from the other fragments and noninteracting outgoing particles can be also separated from other nuclides except for the case of inelastic scattering, in which particles have same atomic and mass numbers but slightly different energies. In the σ R analysis, the inelastic scattering cross sections are often estimated from the energy distribution of the particles [9]. In this work, T OF and magnetic rigidity distribution of the particles are used to estimate the inelastic scattering cross section.…”

Section: Methodsmentioning

confidence: 99%

Search for halo nucleus in Mg isotopes through the measurements of reaction cross sections towards the vicinity of neutron drip line

Takechi

Suzuki

Nishimura

et al. 2014

EPJ Web of Conferences

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Abstract. Reaction cross sections (σ R ) for 24−38 Mg on C targets at the energies of around 240 MeV/nucleon have been measured precisely at RIBF, RIKEN for the purpose of obtaining the crucial information on the changes of nuclear structure in unstable nuclei, especially around the so-called "island of inversion" region. In the island of inversion region, which includes neutron-rich Ne, Na, and Mg isotopes, the vanishing of the N = 20 magic number for neutrons have been discussed along with nuclear deformation. The present result suggest deformation features of Mg isotopes and shows a large cross section of weakly-bound nucleus 37 Mg, which could be caused by a neutron halo formation. a

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“…[10,11] in which reaction cross sections for 8 B-9 Be and 8 Li- 9 Be have been measured and density distributions have been extracted using a Glauber model. These data point out to a different density distribution for 8 B and 8 Li in contrast to the expectation from isospin symmetry that they should be the same.…”

Section: N-9 Be Imaginary Potentialmentioning

confidence: 99%

Differences Between a Single- and a Double-Folding Nucleus- $$^\mathbf{9}$$ 9 Be Optical Potential

et al. 2016

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We have recently constructed two very successful n-9 Be optical potentials (Bonaccorso and Charity in Phys Rev C89:024619, 2014). One by the Dispersive Optical Model (DOM) method and the other (AB) fully phenomenological. The two potentials have strong surface terms in common for both the real and the imaginary parts. This feature makes them particularly suitable to build a single-folded (light-) nucleus-9 Be optical potential by using ab-initio projectile densities such as those obtained with the VMC method (Wiringa http://www.phy. anl.gov/theory/research/density/). On the other hand, a VMC density together with experimental nucleonnucleon cross-sections can be used also to obtain a neutron and/or proton-9 Be imaginary folding potential. We will use here an ab-initio VMC density (Wiringa http://www.phy.anl.gov/theory/research/density/) to obtain both a n-9 Be single-folded potential and a nucleus-nucleus double-folded potential. In this work we report on the cases of 8 B, 8 Li and 8 C projectiles. Our approach could be the basis for a systematic study of optical potentials for light exotic nuclei scattering on such light targets. Some of the projectiles studied are cores of other exotic nuclei for which neutron knockout has been used to extract spectroscopic information. For those cases, our study will serve to make a quantitative assessment of the core-target part of the reaction description, in particular its localization.

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Density distribution of 8B studied via reaction cross sections

Cited by 88 publications

References 41 publications

Probing the exotic structure of 8B by its elastic scattering and breakup reaction on nuclear targets

Probing the exotic structure of 8B by its elastic scattering and breakup reaction on nuclear targets

Search for halo nucleus in Mg isotopes through the measurements of reaction cross sections towards the vicinity of neutron drip line

Differences Between a Single- and a Double-Folding Nucleus- $$^\mathbf{9}$$ 9 Be Optical Potential

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