Determination of the photodisintegration reaction rates involving charged particles: systematical calculations and proposed measurements based on Extreme Light Infrastructure - Nuclear Physics (ELI-NP)

Abstract

Photodisintegration reaction rates involving charged particles are of relevance to the p-process nucleosynthesis that aims at explaining the production of the stable neutron-deficient nuclides heavier than iron. In this study, the cross sections and astrophysical rates of (g,p) and (g,a) reactions for about 3000 target nuclei with 10<Z<100 ranging from stable to proton dripline nuclei are computed. To study the sensitivity of the calculations to the optical model potentials (OMPs), both the phenomenological Woods-Saxon and the microscopic folding OMPs are taken into account. The systematic comparisons show that the reaction rates, especially for the (g,a) reaction, are dramatically influenced by the OMPs. Thus the better determination of the OMP is crucial to reduce the uncertainties of the photodisintegration reaction rates involving charged particles. Meanwhile, a gamma-beam facility at ELI-NP is being developed, which will open new opportunities to experimentally study the photodisintegration reactions of astrophysics interest. Considering both the important reactions identified by the nucleosynthesis studies and the purpose of complementing the experimental results for the reactions involving p-nuclei, the measurements of six (g,p) and eight (g,a) reactions based on the gamma-beam facility at ELI-NP and the ELISSA detector for the charged particles detection are proposed, and the GEANT4 simulations are correspondingly performed. The minimum required energies of the gamma-beam to measure these reactions are estimated. It is shown that the direct measurements of these photonuclear reactions within the Gamow windows at T_9=2.5 for p-process are fairly feasible and promising at ELI-NP. The expected experimental results will be used to constrain the OMPs of the charged particles, which can eventually reduce the uncertainties of the reaction rates for the p-process nucleosynthesis.

arXiv comment14 pages, 8 figures, Phys. Rev. C accepted

References in corpus (22)

• Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XII: Stiffness and stability of neutron-star matter
• Nuclear Level Density and the Determination of Thermonuclear Rates for Astrophysics
• Microscopic HFB+QRPA predictions of dipole strength for astrophysics applications
• Constraining the astrophysical origin of the p-nuclei through nuclear physics and meteoritic data
• Improved predictions of nuclear reaction rates with the TALYS reaction code for astrophysical applications
• Sensitivity of p-Process Nucleosynthesis to Nuclear Reaction Rates in a 25 Solar Mass Supernova Model
• Further explorations of the alpha-particle optical model potential at low energies for the mass range A=45-209
• Databases and tools for nuclear astrophysics applications BRUSsels Nuclear LIBrary (BRUSLIB), Nuclear Astrophysics Compilation of REactions II (NACRE II) and Nuclear NETwork GENerator (NETGEN)
• The production of proton-rich isotopes beyond iron: The $\gamma$ process in stars
• Complementary optical-potential analysis of alpha-particle elastic scattering and induced reactions at low energies
• Uncertainties in the production of $p$ nuclei in massive stars obtained from Monte Carlo variations
• Direct determination of photodisintegration cross sections and the p-process
• Predicted cross sections for photon-induced particle emission
• Uncertainties in the production of p nuclides in thermonuclear supernovae determined by Monte Carlo variations
• Radiogenic p-isotopes from SNIa, nuclear physics uncertainties and Galactic chemical evolution compared with values in primitive meteorites
• Photon-induced Nucleosynthesis: Current Problems and Experimental Approaches
• P-Process Nucleosynthesis inside Supernova-Driven Supercritical Accretion Disks
• Empirical Abundance Scaling Laws and Implications for the Gamma-Process in Core-Collapse Supernovae
• Solution of the alpha-potential mystery in the gamma-process and its impact on the Nd/Sm ratio in meteorites
• Astrophysical S-factors for fusion reactions involving C, O, Ne and Mg isotopes
• Measurement of the ${}^{90,92}$Zr(p,$\gamma$)${}^{91,93}$Nb reactions for the nucleosynthesis of elements around A=90
• Photonuclear Reactions in Astrophysics

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