Optical Model Potential in the Lowest Order Brueckner Theory and Complex Effective N-N Interaction

Yamaguchi, Norio; Nagata, Saburo; Matsuda, T.

doi:10.1143/ptp.70.459

Cited by 113 publications

(127 citation statements)

References 16 publications

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“…The def-WS model with AMD deformation is thus a handy way of simulating AMD or AMD-RGM densities. The def-WS model with AMD deformation also reproduces measured σ R for [24][25][26][27][28][29][30][31][32][33][34][35][36] Mg [18]. As another advantage of the def-WS model, one can fine tune the theoretical result to the experimental data precisely by changing the potential parameters or the deformation parameter slightly.…”

Section: Introductionmentioning

confidence: 92%

“…A powerful tool of analyzing measured σ R or σ I microscopically is the folding model with the g-matrix effective nucleon-nucleon interaction [19][20][21][22][23][24][25][26][27][28][29]. For nucleon scattering from stable target nuclei, the folding potential with the Melbourne g-matrix interaction reproduces measured elastic and reaction cross sections systematically with no adjustable parameter [26,29].…”

Section: Introductionmentioning

confidence: 99%

“…The folding model well reproduces the measured reaction cross sections, when the projectile densities are evaluated by the deformed Woods-Saxon (def-WS) model with AMD deformation. Matter radii of [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Mg are then deduced from the measured reaction cross sections by fine tuning the parameters of the def-WS model. The deduced matter radii are largely enhanced by nuclear deformation.…”

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confidence: 99%

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Ground-state properties of neutron-rich Mg isotopes

et al. 2014

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We analyze recently measured total reaction cross sections for [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Mg isotopes incident on 12 C targets at 240 MeV/nucleon by using the folding model and antisymmetrized molecular dynamics (AMD). The folding model well reproduces the measured reaction cross sections, when the projectile densities are evaluated by the deformed Woods-Saxon (def-WS) model with AMD deformation. Matter radii of [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Mg are then deduced from the measured reaction cross sections by fine tuning the parameters of the def-WS model. The deduced matter radii are largely enhanced by nuclear deformation. Fully microscopic AMD calculations with no free parameter well reproduce the deduced matter radii for [24][25][26][27][28][29][30][31][32][33][34][35][36] Mg, but still considerably underestimate them for 37,38 Mg. The large matter radii suggest that 37,38 Mg are candidates for deformed halo nucleus. AMD also reproduces other existing measured ground-state properties (spin parity, total binding energy, and one-neutron separation energy) of Mg isotopes. Neutron-number (N ) dependence of deformation parameter is predicted by AMD. Large deformation is seen from 31 Mg with N = 19 to a drip-line nucleus 40 Mg with N = 28, indicating that both the N = 20 and 28 magicities disappear. N dependence of neutron skin thickness is also predicted by AMD.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Ground-state properties of neutron-rich Mg isotopes

et al. 2014

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“…Brieva, Rook, and von Geramb [58][59][60][61][62] developed a Brueckner-Hartree-Fock (BHF) approach and used the Hamada-Johnston potential [63] to calculate the pair wave function in nuclear matter, from which a local pseudopotential was constructed for T p ≤ 180 MeV using a generalization of the Siemens averaging procedure [64]. Similar calculations using the Hamada-Johnston potential have also been performed by Yamaguchi, Nagata, and Michiyama (YNM) [65,66], who parametrized their results for T p ≤ 200 MeV in Gaussian rather than Yukawa form. The BHF approach was refined by von Geramb and collaborators [67,68], who constructed an effective interaction based upon the Paris potential [69], designated Paris-Hamburg (PH), that is applicable for 100 ≤ T p ≤ 400 MeV.…”

Section: E Local Density Approximationmentioning

confidence: 99%

Nuclear transparency to intermediate-energy protons

Kelly

1996

Phys. Rev. C

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Nuclear transparency in the (e, e ′ p) reaction for 135 ≤ T p ≤ 800 MeV is investigated using the distorted wave approximation. Calculations using densitydependent effective interactions, both empirical and theoretical, are compared with phenomenological optical potentials. We find that nuclear transparency is well correlated with proton absorption and neutron total cross sections and that calculations using density-dependent effective interactions provide the best agreement with data. Nuclear transparency calculations are compared with recent electron scattering data for Q 2 < 2 (GeV/c) 2 . For T p < ∼ 200 MeV we find that there is considerable sensitivity to the choice of optical model and that the empirical effective interaction provides the best agreement with the data, but remains 5-10% low. For T p > ∼ 300 MeV we find that there is much less difference between these models, but that the calculations significantly underpredict transparency data and that the discrepancy increases with A. The differences between Glauber and optical model calculations are related to their respective definitions of the semi-inclusive cross section. By using a more inclusive summation over final states the Glauber model emphasizes nucleonnucleon inelasticity, whereas with a more restrictive summation the optical model emphasizes nucleon-nucleus inelasticity; experimental definitions of the semi-inclusive cross section lie between these extremes.

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“…The phenomenological optical potential includes complicated effects in the p-α scattering, such as non-locality due to exchange process, at least in part and can serve as a reasonable model of the p-α interaction. The complex effective interaction (CEG) [9] is adopted as the p-n interaction. The interactions are folded with the α-n-n cluster distributions obtained by the Gaussian expansion method [10].…”

Section: Resultsmentioning

confidence: 99%

Spin observable in proton elastic scattering of⁶He and its relevance to cluster structure

Uesaka

Sakaguchi

2011

J. Phys.: Conf. Ser.

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Optical Model Potential in the Lowest Order Brueckner Theory and Complex Effective N-N Interaction

Cited by 113 publications

References 16 publications

Ground-state properties of neutron-rich Mg isotopes

Ground-state properties of neutron-rich Mg isotopes

Nuclear transparency to intermediate-energy protons

Spin observable in proton elastic scattering of⁶He and its relevance to cluster structure

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Optical Model Potential in the Lowest Order Brueckner Theory and Complex Effective N-N Interaction

Cited by 113 publications

References 16 publications

Ground-state properties of neutron-rich Mg isotopes

Ground-state properties of neutron-rich Mg isotopes

Nuclear transparency to intermediate-energy protons

Spin observable in proton elastic scattering of6He and its relevance to cluster structure

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Spin observable in proton elastic scattering of⁶He and its relevance to cluster structure