Nonelastic Cross Sections of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Pb</mml:mi></mml:mrow><mml:mrow><mml:mn>206</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Pb</mml:mi></mml:mrow><mml:mrow><mml:mn>208</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>for 14-MeV Neutrons

Haas, Gregory M.; Okhuysen, P.L.

doi:10.1103/physrev.132.1211

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…In Fig. 18, it can be seen that the calculated nonelastic cross sections by GS2 is in reasonable agreement with the experimental data [42,74,92], and the calculated result by GS2 is better in fitting the experimental data than those by Ska and SII.…”

Section: Results and Analysessupporting

confidence: 64%

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Isospin dependent nucleon-nucleus optical potential with Skyrme interactions

2009

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In this paper, the isospin dependent nucleon-nucleus optical potential theory is introduced on the basis of the effective Skyrme interactions. From the view of the many-body theory, the nucleon optical potential can be identified with the mass operator of the one-particle Green function. The first and second order mass operators of the one particle Green function in nuclear matter are derived, and the real and imaginary parts of the optical potential for finite nuclei are obtained as usual by applying a local density approximation. Our results, in most cases, can be derived and expressed analytically. From an extensive comparison with experimental data of various quantities of interests, it is concluded that for certain versions of Skyrme interactions without parameter adjusting the agreement between theory and experiments can be obtained satisfactorily. We define the ratio of the difference and summation of the neutron and proton nonelastic cross sections as the isospin effect value. The calculated results show that the isopin effect value decreases as the incident energy increases and increases as the asymmetric parameter α 0 = (N -Z)/A of the target nucleus increases.

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Section: Results and Analysessupporting

confidence: 64%

“…Calculated neutron nonelastic cross sections compared with experimental data[42,74,92] for n + 208 Pb reaction. The theoretical values computed with GS2 are shown as the solid curve, those computed with Ska are shown as the dashed curve, and those computed with SII are shown as the dot-dashed curve.FIG.…”

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confidence: 99%

Isospin dependent nucleon-nucleus optical potential with Skyrme interactions

2009

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“…Reaction and total cross section data used are listed in Table XI and (e, e ′ p) extractions of spectroscopic factors and rms radii are listed in Table XII. [196,197] TABLE XII. Spectroscopic factors (relative to the independent-particle-model value) S nℓj and rms radii R rms nℓj extracted for the listed single-particle levels from referenced (e, e ′ p) data that were used in the fits.…”

Section: Appendix A: Data Referencesmentioning

confidence: 99%

Asymmetry dependence of nucleon correlations in spherical nuclei extracted from a dispersive-optical-model analysis

et al. 2011

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Neutron elastic-scattering angular distributions were measured at beam energies of 11.9 and 16.9 MeV on 40,48 Ca targets. These data plus other elastic-scattering measurements, total and reaction cross sections measurements, (e, e ′ p) data, and single-particle energies for magic and doubly magic nuclei have been analyzed in the dispersive optical model (DOM) generating nucleon self-energies (optical-model potentials) which can be related, via the many-body Dyson equation, to spectroscopioc factors and occupation probabilities. It is found that for stable nuclei with N ≥ Z, the imaginary surface potential for protons exhibits a strong dependence on the neutron-proton asymmetry. This result leads to a more modest dependence of the spectroscopic factors on asymmetry. The measured data and the DOM analysis of all considered nuclei clearly demonstrates that the neutron imaginary surface potential displays very little dependence on the neutron-proton asymmetry for nuclei near stability (N ≥ Z).

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