Isospin dependent global nucleon-nucleus optical model at intermediate energies

Weppner, S. P.; Penney, R. B.; Diffendale, G. W.; Vittorini, Grahame

doi:10.1103/physrevc.80.034608

Cited by 43 publications

(57 citation statements)

References 136 publications

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“…Commonly these nucleons-nucleus interactions are parametrized by phenomenological optical potentials which fit a large body of elastic scattering data [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Li6 in a three-body model with realistic Forces: Separable versus nonseparable approach

et al. 2017

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Background: Deuteron induced reactions are widely used to probe nuclear structure and astrophysical information. Those (d,p) reactions may be viewed as three-body reactions and described with Faddeev techniques. Purpose: Faddeev equations in momentum space have a long tradition of utilizing separable interactions in order to arrive at sets of coupled integral equations in one variable. However, it needs to be demonstrated that their solution based on separable interactions agrees exactly with solutions based on nonseparable forces. Methods: Momentum space Faddeev equations are solved with nonseparable and separable forces as coupled integral equations. Results: The ground state of 6 Li is calculated via momentum space Faddeev equations using the CD-Bonn neutron-proton force and a Woods-Saxon type neutron(proton)-4 He force. For the latter the Pauli-forbidden S-wave bound state is projected out. This result is compared to a calculation in which the interactions in the two-body subsystems are represented by separable interactions derived in the Ernst-Shakin-Thaler (EST) framework. Conclusions: We find that calculations based on the separable representation of the interactions and the original interactions give results that agree to four significant figures for the binding energy, provided that energy and momentum support points of the EST expansion are chosen independently. The momentum distributions computed in both approaches also fully agree with each other.

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“…Commonly these nucleons-nucleus interactions are parametrized by phenomenological optical potentials which fit a large body of elastic scattering data [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Li6 in a three-body model with realistic Forces: Separable versus nonseparable approach

et al. 2017

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“…We compare three nuclear optical potentials: the potentials of Koning and Delaroche (KD), employed to computed the curves in Fig. 3, of Weppner et al (WP) [32], and of Madland (MD) [33]. The three potentials have a similar Woods-Saxon functional form but the Madland potential has no surface term.…”

Section: Li+ 208 Pb Scattering Around the Coulomb Barriermentioning

confidence: 99%

Low-Energy Reactions Involving Halo Nuclei: A Microscopic Version of CDCC

2015

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We extend the continuum discretized coupled channel method (CDCC) to a microscopic version, where the projectile is described by a microscopic cluster model. This generalization (MCDCC) only relies on nucleon-target interactions, and therefore presents an important predictive power. We briefly present an outline of the model, and provide recent examples with 7 Li and 8 B elastic scattering on different light and heavy targets. We show that the model can be applied to high energies, as well as to low energies.

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“…The collaboration with S.P. Weppner, who recently published a new global optical potential fit [32], will be highly beneficial in this investigation. Furthermore, Weppner's capabilities of fitting phenomenological optical potentials will be important, when we need to prepare specific potentials as input the (d,p) reactions.…”

Section: Microscopic Folding Optical Potentials (From Doe Funding)mentioning

confidence: 99%

TORUS: Theory of Reactions for Unstable iSotopes - Year 1 Continuation and Progress Report

Arbanas¹,

Elster²,

Escher³

et al. 2011

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Isospin dependent global nucleon-nucleus optical model at intermediate energies

Cited by 43 publications

References 136 publications

Li6 in a three-body model with realistic Forces: Separable versus nonseparable approach

Li6 in a three-body model with realistic Forces: Separable versus nonseparable approach

Low-Energy Reactions Involving Halo Nuclei: A Microscopic Version of CDCC

TORUS: Theory of Reactions for Unstable iSotopes - Year 1 Continuation and Progress Report

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