Exchange effects in elastic and inelastic alpha- and heavy-ion scattering

Khoa, Dao T.; Knyazkov, O. M.

doi:10.1007/bf01295184

Cited by 10 publications

(8 citation statements)

References 35 publications

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“…6 b The real parts is the M3Y folded potential renormalized by a factor NR = 0.72 known effect, which has been established in several cases of the elastic 12C + 12C scattering or the elastic scattering of 6Li on different targets, where strong coupling to inelastic and break-up channels has to be considered [26]. We note that at the surface region the effects of the density dependence and the Pauli principle are not so strong as in the overlapping region and the other types of the folded potential (DDM3Y and M3Y/FRE) give about the same description to the data as the simple M3Y potential [16,19,27]. Some more discussions on this system will also be given in Sect.…”

Section: Z~ Systemmentioning

confidence: 94%

Refractive scattering and reactions, comparison of two systems:16O+16O and20Ne+12C

Bohlen

Stiliaris

Gebauer

et al. 1993

Z. Physik A - Hadrons and Nuclei

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Abstract. Elastic, inelastic scattering as well as one-neutron transfer channels have been measured over a wide angular range for systems 160+ 160 at the incident energy of 350 MeV and 2~at 390 MeV, respectively, using the Q3D magnetic spectrometer. In both cases differential cross sections have been measured down to about 50 nb/sr (or da/daR <_ 10 -4) at large angles. For the 160 + 160 system refractive contributions are found at the level of these cross sections, whereas in the ZONe + l zc case a steeper decrease of the differential cross section with the angle is observed and the refractive contribution can not be determined. The elastic scattering data have been analyzed using standard Woods-Saxon potentials and potentials calculated in different versions of the doublefolding model. Some properties of these potentials are tested in the calculations for inelastic scattering and oneneutron transfer within the DWBA. With the refractive pattern observed for the 160 "4-160 system, the scattering and transfer data are found to be sensitive to the interaction potential at small internuclear distances down to about 2.5 fm.

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Section: Z~ Systemmentioning

confidence: 94%

Refractive scattering and reactions, comparison of two systems:16O+16O and20Ne+12C

Bohlen

Stiliaris

Gebauer

et al. 1993

Z. Physik A - Hadrons and Nuclei

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“…The double folding model Satchler and Love [32] presented the basic idea of the folding model in detail and in the reference [4], an improved version of folding model was introduced to calculate the exchange part of the HI potential. We give here only a brief description of this model and refer the reader to the references [1,2,[32][33][34][35] for details. In the first order of Feshbach's theory for the optical potential, the microscopic nucleus-nucleus potential can be evaluated as an antisymmetrized HartreeF ock type potential for the dinuclear system [1,2,4]:…”

Section: The Theoretical Formalismmentioning

confidence: 99%

Folding model analysis of $ ^{12}C- ^{12}C $ and $ ^{16}O- ^{16}O $ elastic scattering using the density-dependent LOCV averaged effective interaction

Rahmat,

Modarres

2019

Preprint

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The averaged effective two-body interaction (AEI ) which can be generated through the lowest order constrained variational (LOCV ) method for symmetric nuclear matter (SNM ) with the input Reid 68 nucleon-nucleon potential, is used as the effective nucleon-nucleon potential in the folding model to describe the heavy-ion (HI ) elastic scattering cross sections. The elastic scattering cross sections of 12 C − 12 C and 16 O − 16 O systems are calculated in the above frameworks. The results are compared with the corresponding calculations coming from the fitting procedures with the input finite range DDM3Y1-Reid potential and the available experimental data at different incident energies. It is shown that a reasonable description of the elastic 12 C − 12 C and 16 O − 16 O scattering data at the low and the medium energies can be obtained by using the above LOCV AEI, without any need to define a parameterize density dependent function in the effective nucleonnucleon potential, which is formally considered in the typical DDM3Y1-Reid interactions.

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“…[20]. In the derivation of the exchange potential V EX (E, R), however, we have chosen a closed expression for the potential in terms of a series expansion of the Bessel functions [21]. The approximation yields equivalent result as obtained in the iterative procedure, especially for the energy domain chosen by us where the scattering is more sensitive to the potential at large radius.…”

Section: Folded Potentialsmentioning

confidence: 99%

“…The interaction has been applied to heavy-ion scattering at energies above of 5 MeV/nucleon with reasonable success [20][21][22]. The direct part of the interaction is given as…”

Section: The Interactionmentioning

confidence: 99%

“…In a microscopic approach to the optical potential, the real part is derived by folding an effective nucleon-nucleon interaction with the densities of the colliding nuclei. The folding model, incorporating the structure informations directly in the evaluation of the real potential, is widely and successfully used for describing the heavy ion elastic scattering [20][21][22][23]. To derive the imaginary component microscopically several methods have been adopted [1,[24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

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Coupled channel description of 16O+142,144,146Nd scattering around the Coulomb barrier using a complex microscopic potential

et al. 2003

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Angular distributions of elastic scattering and inelastic scattering from 2 + 1 state are measured for 16 O + 142,144,146 Nd systems at several energies in the vicinity of the Coulomb barrier. The angular distributions are systematically analyzed in coupled channel framework. Renormalized double folded real optical and coupling potentials with DDM3Y interaction have been used in the calculation. Relevant nuclear densities needed to generate the potentials are derived from shell model wavefunctions. A truncated shell model calculation has been performed and the calculated energy levels are compared with the experimental ones. To simulate the absorption, a 'hybrid' approach is adopted. The contribution to the imaginary potential of couplings to the inelastic channels, other than the 2 + 1 target excitation channel, is calculated in the Feshbach formalism. This calculated imaginary potential along with a short ranged volume Woods-Saxon potential to simulate the absorption in fusion channel reproduces the angular distributions for 16 O + 146 Nd quite well.

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Exchange effects in elastic and inelastic alpha- and heavy-ion scattering

Cited by 10 publications

References 35 publications

Refractive scattering and reactions, comparison of two systems:16O+16O and20Ne+12C

Refractive scattering and reactions, comparison of two systems:16O+16O and20Ne+12C

Folding model analysis of $ ^{12}C- ^{12}C $ and $ ^{16}O- ^{16}O $ elastic scattering using the density-dependent LOCV averaged effective interaction

Coupled channel description of 16O+142,144,146Nd scattering around the Coulomb barrier using a complex microscopic potential

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