Elastic and inelastic scattering of 800 MeV protons by 58Ni

Kyle, G. S.; Hintz, Norton M.; Oothoudt, M.S.; Kaletka, M.; Lang, P. M.; Nann, H.; Seth, K. K.; McDaniels, D.K.; Varghese, P.; Kozłowski, T.; Madland, D.G.; Morris, C. L.; Pratt, J.C.; Spencer, J.E.; Tanaka, N.; Thiessen, H. A.; Blanpied, G. S.; Hoffmann, G. W.; Liljestrand, R. P.; Fong, J. C.; Igo, G.; Ridge, R. J.; Whitten, C. A.

doi:10.1016/0370-2693(80)90994-6

Cited by 18 publications

(8 citation statements)

References 14 publications

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“…Two different settings were applied to BigRIPS. From the first one, centered on 73 Co, the isotopes 72,74 Ni and 76 Zn were analyzed, and from the second, centered on 79 Cu, 80 Zn was analyzed. Due to the existence of an isomeric state of 78 Zn [33], (p,p ) cross sections could not be determined for this isotope.…”

Section: Methodsmentioning

confidence: 99%

“…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%

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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: Methodsmentioning

confidence: 99%

Section: B Deformation In the Collective Modelmentioning

confidence: 99%

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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“…at 6~ 880 mb/sr) is dominant and it is a factor of 3.8 larger than for the corresponding state of 58Ni. The counting rate of the line at 3.1 MeV could be explained only to 60% by the summed cross sections of the unresolved 2+-states at I. order [9], the other part (~40 mb/sr at 6 ~ has to be attributed to the mutual excitation. Calculations have been performed with the vibrational model in second order to include besides the sequential excitation also the simultaneous excitation; details of the formalism are given elsewhere [20].…”

Section: Analysis Of the Inelastic Scattering Using Coupled Channementioning

confidence: 98%

“…Due to the strong Q-value dependence, (9), it is only necessary to take into account a limited range of excitation energies (<20 MeV) above the threshold for gp(Ex). Here the density of single-particle orbits and their strength increases slowly with E~, although the total strength is fragmented into many levels by the particle-hole interaction.…”

Section: D26mentioning

confidence: 99%

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Inelastic scattering of20Ne and12C on58Ni and the three-body continuum

et al. 1985

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Using beams of 2~at 291 and 392 MeV and 12C at 300 MeV the inelastic excitation of collective modes in SSNi has been studied with a Q3D magnetic spectrometer. In the analysis different contributions are unfolded from the spectra: 1. single lines, 2. the inelastic continuum, 3. the three-body continuum, which mainly originates from onenucleon pick-up to unbound states followed by the nucleon emission. Special care was taken to calculate the spectral shape and strength of this process. The population of unbound 21Ne-states is measured in a neutron-2~ coincidence experiment. Coupled channel calculations have been performed to extract the deformation parameters for the inelastic states, including mutual excitation. For the giant quadrupole resonance 70 ~ of the energy weighted sum rule is found. The excitation of higher multipoles is calculated and extrapolated to higher incident energies (50 MeV/u). The importance of the inelastic excitation as a "doorway process" to more complex interactions is discussed. It is found that especially the excitation of the projectile (2~ takes a large fraction (20-50 ~) of the incoming flux in the first step,

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