Proton Scattering by Isobars and Single Isotopes

Benveniste, J.; Mitchell, A. C.; Buck, B.; Fulmer, C.B.

doi:10.1103/physrev.133.b323

Cited by 42 publications

(5 citation statements)

References 6 publications

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“…For the the case of the Zn isotopes, the present measurements are below β 2 (EM). Previous measurements on stable Zn isotopes [66,70,72,74,75,[77][78][79][80][81][82][83] show similar values of β 2 (EM) and β 2 (p,p ) for 68,70 Zn and hint at a small increase on β 2 (p,p ) for 64,66 Zn.…”

Section: B Deformation In the Collective Modelmentioning

confidence: 67%

“…The increased matter deformation compared to the charge deformation is consistent with the results obtained from previous measurements in lighter Ni isotopes, as shown by the purple points in the figure. These points represent the average of different available results [56,[65][66][67][68][69][70][71][72][73][74][75][76] with the error bar calculated as the standard deviation of the measurements added in quadrature with the error of individual measurements, when reported.…”

Section: B Deformation In the Collective Modelmentioning

confidence: 99%

“…The filled triangle corresponds to a previous measurement at 80 MeV/nucleon[64]. The purple circles represent an average of previous measurements[56,[65][66][67][68][69][70][71][72][73][74][75][76].…”

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confidence: 99%

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Inelastic scattering of neutron-rich Ni and Zn isotopes off a proton target

Cortés¹,

Doornenbal²,

Dupuis³

et al. 2018

Phys. Rev. C

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Proton inelastic scattering of 72,74 Ni and 76,80 Zn ions at energies around 235 MeV/nucleon was performed at the Radioactive Isotope Beam Factory and studied using γ-ray spectroscopy. Angular integrated cross sections for direct inelastic scattering to the 2 + 1 and 4 + 1 states were measured. The Jeukenne-Lejeune-Mahaux folding model, extended beyond 200 MeV, was used together with neutron and proton densities stemming from quasiparticle random-phase approximation (QRPA) calculations to interpret the experimental cross sections and to infer neutron to proton matrix element ratios. In addition, coupled-channels calculations with a phenomenological potential were used to determine deformation lengths. For the Ni isotopes, correlations favor neutron excitations, thus conserving the Z = 28 gap. A dominance of proton excitation, on the other hand, is observed in the Zn isotopes, pointing to the conservation of the N = 50 gap approaching 78 Ni. These results are in agreement with QRPA and large-scale shell-model calculations.

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Section: B Deformation In the Collective Modelmentioning

confidence: 67%

Section: B Deformation In the Collective Modelmentioning

confidence: 99%

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Inelastic scattering of neutron-rich Ni and Zn isotopes off a proton target

Cortés¹,

Doornenbal²,

Dupuis³

et al. 2018

Phys. Rev. C

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show abstract

“…Calculated elastic scattering angular distributions (solid line) compared with experimental data[69,[83][84][85][86][87][88][89][90] for p + 56 Fe reaction. The results are offset by factors of 10.…”

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confidence: 99%

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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“…are insensitive to the value taken for the coefficient of the Coulomb term U. ""O.4Zj A 1/3 in the potential [Benveniste et aL (91)] but the resulting values of U/ still show some scatter, probably due to nuclear structure effects char acteristic of particular regions of the periodic table. The results of some recent analyses are shown in Table I and give an average value of U/ = 24 ± 5 MeV.…”

Section: 5)mentioning

confidence: 99%

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1967

Annu. Rev. Nucl. Sci.

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Proton Scattering by Isobars and Single Isotopes

Cited by 42 publications

References 6 publications

Inelastic scattering of neutron-rich Ni and Zn isotopes off a proton target

Inelastic scattering of neutron-rich Ni and Zn isotopes off a proton target

Isospin dependent nucleon-nucleus optical potential with Skyrme interactions

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