α- and neutron-induced reactions on ruthenium isotopes

Rapp, W.; Heil, M.; Hentschel, D.; Käppeler, F.; Reifarth, R.; Brede, H.J.; Klein, H.; Rauscher, T.

doi:10.1103/physrevc.66.015803

Cited by 76 publications

(88 citation statements)

References 26 publications

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“…One may indeed keep in mind the difference in energy range within which an α-particle potential is usually established by analysis of the elastic scattering, and that of the α-induced reactions of astrophysical interest. Similar questions have been raised by a rather recent analysis for the target nuclei 63 Cu [20], 96,98 Ru [21] and 118 Sn [22].…”

Section: Introductionmentioning

confidence: 77%

“…15). For this latter class of nuclei, definitely marked by larger charge and atomic numbers, even the global OMP of McFadden and Satchler provided better results [14,15,20,21] than our former ROP based on elasticscattering data analysis [12]. On the other hand, the calculated reaction cross sections corresponding to this global potential vary with respect to the experimental data, from an underestimation around 10% for target nuclei with A ∼60 [13] to much larger overestimation for A >100 [14,15].…”

Section: Particular Rop Features Below the Coulomb Barriermentioning

confidence: 93%

“…Its connection to a survey of α-particle induced reaction data below 12 MeV is given in Sec. 4, starting with the accurate total-reaction cross sections of Vonach et al [28] and including the open questions recently noted for 63 Cu [20] and A ∼100 nuclei [14,15,21,22]. As a matter of fact, in order to calculate the reaction cross section we have used a consistent parameter set established by analyzing various independent exper-imental data for all stable isotopes of V, Mn, Co, Ni, Cu [29,30,31], Mo [32], Pd, Sn and Te [33].…”

Section: Introductionmentioning

confidence: 99%

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Complementary optical-potential analysis of -particle elastic scattering and induced reactions at low energies

Avrigeanu

Obreja

Román

et al. 2009

Atomic Data and Nuclear Data Tables

175

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A previously derived semi-microscopic analysis based on the Double Folding Model, for α-particle elastic scattering on A ∼100 nuclei at energies below 32 MeV, is extended to medium mass A ∼50-120 nuclei and energies from ∼13 to 50 MeV. The energy-dependent phenomenological imaginary part for this semi-microscopic optical model potential was obtained including the dispersive correction to the microscopic real potential, and used within a concurrent phenomenological analysis of the same data basis. A regional parameter set for low-energy α-particles entirely based on elastic-scattering data analysis was also obtained for nuclei within the above-mentioned mass and energy ranges. Then, an ultimate assessment of (α, γ), (α, n) and (α, p) reaction cross sections concerned target nuclei from 45 Sc to 118 Sn and incident energies below ∼12 MeV. The former diffuseness of the real part of optical potential as well as the surface imaginary-potential depth have been found responsible for the actual difficulties in the description of these data, and modified in order to obtain an optical potential which describe equally well both the low energy elastic-scattering and induced-reaction data of α-particles.

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Section: Introductionmentioning

confidence: 77%

Section: Particular Rop Features Below the Coulomb Barriermentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Complementary optical-potential analysis of -particle elastic scattering and induced reactions at low energies

Avrigeanu

Obreja

Román

et al. 2009

Atomic Data and Nuclear Data Tables

175

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“…However, there is still a lack of relevant experimental data for (γ,α) and (α,γ) reactions because of the high Coulomb barriers. Recent α capture experiments on heavy nuclei at astrophysically relevant energies were performed on 70 Ge [14], 96 Ru [15], 112 Sn [16] and 144 Sm [17]. No experimental data for (γ,α) cross sections are available at astrophysically interesting energies.…”

Section: Introductionmentioning

confidence: 99%

Elastic α scattering onSn112andSn124at astrophysi

et al. 2005

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The cross sections for the elastic scattering reactions 112,124 Sn(α,α) 112,124 Sn at energies above and below the Coulomb barrier are presented and compared to predictions for global α-nucleus potentials. The high precision of the new data allows a study of the global α-nucleus potentials at both the proton and neutron-rich sides of an isotopic chain. In addition, local α-nucleus potentials have been extracted for both nuclei, and used to reproduce elastic scattering data at higher energies. Predictions from the capture cross section of the reaction 112 Sn(α,γ) 116 Te at astrophysically relevant energies are presented and compared to experimental data.

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“…In recent years, a number of α-beam activation measurements have been conducted for targets relevant to pprocess [5][6][7][8][9][10][11][12][13]. Cross sections of the corresponding (α,x) reactions were measured at, or close to, the astrophysically relevant energy.…”

mentioning

confidence: 99%