Elastic and inelastic scattering of 30.4 MeV polarised protons by 12, 13C, 16O and 54Fe

Greaves, P.D.; Hnizdo, V.; Lowe, J.; Karban, O.

doi:10.1016/0375-9474(72)90101-7

Cited by 65 publications

(10 citation statements)

References 34 publications

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“…In the next section larger theoretical differences will be proffered, while examining the isovector components, that will eventually lead to quite disparate scattering observable results. 54,56 Fe [21,74,84,115], at varying proton laboratory energies. Refer to Fig.…”

Section: Isoscalar Strengthmentioning

confidence: 99%

Isospin dependent global nucleon-nucleus optical model at intermediate energies

et al. 2009

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A global nucleon-nucleus optical potential for elastic scattering has been produced which replicates experimental data to high accuracy and compares well with other recently formulated potentials. The calculation that has been developed describes proton and neutron scattering from target nuclei ranging from carbon to nickel and is applicable for projectile energies from 30 to 160 MeV. With these ranges it is suitable for calculations associated with experiments performed by exotic beam accelerators. The potential has both real and imaginary isovector asymmetry terms to better describe the dynamics of chains of isotopes and mirror nuclei. An analysis of the validity and strength of the asymmetry term is included with connections established to other optical potentials and charge-exchange reaction data.

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Section: Isoscalar Strengthmentioning

confidence: 99%

Isospin dependent global nucleon-nucleus optical model at intermediate energies

et al. 2009

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“…The experimental data are taken from Refs. [42,49,[70][71][72][73]. below 50 MeV, the diffraction pattern varies by changing r g .…”

Section: Theoretical Ambiguity Coming From the Local Density Approxim...mentioning

confidence: 99%

Reexamination of microscopic optical potentials based on multiple scattering theory

Minomo,

Washiyama,

Ogata

2017

Preprint

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Background: Microscopic optical potentials have been successful in describing nucleon-nucleus and nucleusnucleus scattering. Some essential ingredients of the framework, however, have not been examined in detail. Purpose: Applicability of the microscopic folding model is systematically investigated. Effect of an antisymmetrization factor (ASF) appearing in multiple scattering theory, theoretical uncertainty regarding the local density approximation (LDA), and the validity of a prescription for nonlocality, the Brieva-Rook (BR) localization, of the microscopic potential, are quantitatively estimated for nucleon-nucleus scattering; investigation on the ASF is carried out for also deuteron-nucleus scattering. Methods: A single folding model with the Melbourne g-matrix interaction and the SLy4 Skyrme-type Hartree-Fock-Bogoliubiv (SLy4-HFB) density is employed for evaluating a nucleon-nucleus microscopic optical potential. Deuteron-nucleus scattering is described by the continuum-discretized coupled-channels method incorporating the microscopic proton-nucleus and neutron-nucleus potentials. Results: The ASF is found to affect proton total reaction cross sections σR for a 12 C target below 200 MeV by about 10%. Effect of the ASF on σR is negligibly small if a target nucleus is heavy or scattering energy is above 200 MeV; elastic cross sections are hardly affected by the ASF for all the reaction systems considered. Below 65 MeV, still the BR localization works quite well. However, at energies below about 50 MeV, the LDA becomes less accurate for evaluating elastic cross sections at backward angles. This is the case also for σR of p-12 C below about 200 MeV. Conclusions: The microscopic model is applicable to nucleon-nucleus scattering above 25 MeV for target nuclei in a wide range of mass numbers. Deviation of calculated results from experimental data is less than about 10%.

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“…Differential cross-section data were measured (Votava et al 1973; at 30.3 MeV for 10 B, 16 O and 20 Ne. For 13 C data were taken at 30.5 MeV (Greaves et al 1972) and at 30 MeV for 40 Ar (Rush et al 1971) Turner 1964). The shapes of the experimental data are well reproduced by our calculations, but the minima in the data from the heavier targets are too sharply predicted.…”

Section: (3b) Results Of the Scattering Of 30 Mev Protonsmentioning

confidence: 99%