Deformation of Ne isotopes in the island-of-inversion region

Abstract

The deformation of Ne isotopes in the island-of-inversion region is determined by the double-folding model with the Melbourne $g$-matrix and the density calculated by the antisymmetrized molecular dynamics (AMD). The double-folding model reproduces, with no adjustable parameter, the measured reaction cross sections for the scattering of ${}^{28-32}$Ne from ${}^{12}$C at 240MeV/nucleon. The quadrupole deformation thus determined is around 0.4 in the island-of-inversion region and ${}^{31}$Ne is a halo nuclei with large deformation. We propose the Woods-Saxon model with a suitably chosen parameterization set and the deformation given by the AMD calculation as a convenient way of simulating the density calculated directly by the AMD. The deformed Woods-Saxon model provides the density with the proper asymptotic form. The pairing effect is investigated, and the importance of the angular momentum projection for obtaining the large deformation in the island-of-inversion region is pointed out.

19 pages, 16 figures, 6 tables

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Cited by in corpus (41)

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• Mass-number and isotope dependence of the local microscopic optical potential for polarized proton scattering
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• Recent development of CDCC
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• Research on the halo in ${}^{31}$Ne with complex momentum representation method
• Coulomb breakup of ${}^{37}$Mg and its ground state structure
• Roles of chiral three-nucleon forces in nucleon-nucleus scattering
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• Nuclear Structure and Reaction Properties of Ne, Mg and Si Isotopes with RMF Densities
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• Self-consistent description of the halo nature of 31Ne with continuum and pairing correlations
• Low-lying electric-dipole strengths of Ca, Ni, and Sn isotopes imprinted on total reaction cross sections
• Neutron-skin values and matter and neutron radii determined from reaction cross sections of proton scattering on ${}^{12}$C, ${}^{40,48}$Ca, ${}^{58}$Ni, ${}^{208}$Pb
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• Reaction mechanism in odd-even staggering of reaction cross sections
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• Three-body description of ${}^9$C: Role of low-lying resonances in breakup reactions
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• Enlarged deformation region in neutron-rich Zr isotopes by the second intruder orbit
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• ${}^{12}$C+${}^{12}$C scattering as the reference system for reaction cross section
• Investigating nuclear density profiles to reveal particle-hole configurations in the island of inversion