Odd p isotope 113In: Measurement of alpha-induced reactions

Abstract

One of the few p nuclei with an odd number of protons is 113In. Reaction cross sections of 113In(alpha,gamma)117Sb and 113In(alpha,n)116Sb have been measured with the activation method at center-of-mass energies between 8.66 and 13.64 MeV, close to the astrophysically relevant energy range. The experiments were carried out at the cyclotron accelerator of ATOMKI. The activities were determined by off-line detection of the decay gamma rays with a HPGe detector. Measured cross sections and astrophysical S factor results are presented and compared with statistical model calculations using three different alpha+nucleus potentials. The comparison indicates that the standard rates used in the majority of network calculations for these reactions were too fast due to the energy dependence of the optical alpha potential at low energy.

arXiv comment9 pages, 9 figures, Accepted for publication in Phys. Rev. C. Minor changes made

References in corpus (14)

• Nucleosynthesis in Massive Stars With Improved Nuclear and Stellar Physics
• Astrophysical Reaction Rates From Statistical Model Calculations
• The endpoint of the rp process on accreting neutron stars
• Tables of Nuclear Cross Sections and Reaction Rates: an Addendum to the Paper "Astrophysical Reaction Rates from Statistical Model Calculations"
• Sensitivity of p-Process Nucleosynthesis to Nuclear Reaction Rates in a 25 Solar Mass Supernova Model
• Branchings in the gamma-process path revisited
• Alpha-induced cross sections of 106Cd for the astrophysical p-process
• Cross section measurements of $\alpha$-induced reactions on ${}^{92,94}$Mo and ${}^{112}$Sn for $p$-process studies
• Short-lived p-nuclides in the early solar system and implications on the nucleosynthetic role of X-ray binaries
• Photon-induced Nucleosynthesis: Current Problems and Experimental Approaches
• Cross section predictions for hydrostatic and explosive burning
• Resonance analysis of ${}^{147}$Sm(n,alpha) cross sections: Comparison to optical model calculations and indications of non-statistical effects
• Evolution and Nucleosynthesis of Massive Stars and Related Nuclear Uncertainties
• $p$-Process simulations with a modified reaction library

Cited by in corpus (33)

• Constraining the astrophysical origin of the p-nuclei through nuclear physics and meteoritic data
• Further explorations of the alpha-particle optical model potential at low energies for the mass range A=45-209
• The Path to Improved Reaction Rates for Astrophysics
• The production of proton-rich isotopes beyond iron: The $\gamma$ process in stars
• The activation method for cross section measurements in nuclear astrophysics
• Determination of 141Pr(alpha,n)144Pm cross sections at energies of relevance for the astrophysical p-process using the gamma-gamma coincidence method
• Elastic alpha scattering experiments and the alpha-nucleus optical potential at low energies
• Alpha-induced reaction cross section measurements on 151Eu for the astrophysical gamma-process
• Determining reaction cross sections via characteristic X-ray detection: α-induced reactions on 169Tm for the astrophysical γ -process
• Suppression of the stellar enhancement factor and the reaction 85Rb(p,n)85Sr
• The gamma-ray spectrometer HORUS and its applications for nuclear astrophysics
• Investigation of alpha-induced reactions on the p nucleus 168Yb
• Investigation of the reaction 74Ge(p,gamma)75As using the in-beam method to improve reaction network predictions for p nuclei
• Relation between total cross sections from elastic scattering and alpha-induced reactions: the example of 64Zn
• High precision ${}^{113}$In($\alpha ,\alpha$)${}^{113}$In elastic scattering at energies around the Coulomb barrier for the astrophysical $\gamma$ process
• Investigation of $\alpha$-induced reactions on Sb isotopes relevant to the astrophysical $\gamma$-process
• Measurement of the 187Re(α,n)190Ir reaction cross section at sub-Coulomb energies using the Cologne Clover Counting Setup
• Investigation of alpha-induced reactions on 127I for the astrophysical gamma process
• Astrophysical analysis of the measurement of (alpha,gamma) and (alpha,n) cross sections of 169Tm
• Measurements of proton induced reaction cross sections on 120Te for the astrophysical p-process
• ${}^{110,116}$Cd($\alpha ,\alpha$)${}^{110,116}$Cd elastic scattering and systematic investigation of elastic $\alpha$ scattering cross sections along the $Z$ = 48 isotopic and $N$ = 62 isotonic chains
• Test of statistical model cross section calculations for $\alpha$-induced reactions on ${}^{107}$Ag at energies of astrophysical interest
• $\alpha$-scattering and $\alpha$-induced reaction cross sections of ${}^{64}$Zn at low energies
• alpha-induced reactions on 115In: cross section measurements and statistical model analysis
• Cross-section measurement of the ${}^{130}$Ba(p,$\gamma$)${}^{131}$La reaction for $\gamma$-process nucleosynthesis
• Total reaction cross sections from ${}^{141}$141Pr($\alpha$,$\alpha$)${}^{141}$Pr elastic scattering and $\alpha$-induced reaction cross sections at low energies
• Cross-section measurements of radiative proton-capture reactions in ${}^{112}$Cd at energies of astrophysical interest
• Total reaction cross section ${\sigma }_{\mathrm{reac}}$ of $\alpha$-induced reactions from elastic scattering: the example ${}^{140}$Ce($\alpha$,$\alpha$)${}^{140}$Ce
• Determination of $\alpha$-optical potential for reactions with p-nuclei from the study of ($\alpha$,n) reactions in the astrophysically relevant energy region
• Role of consistent parameter sets in an assessment of the alpha-particle optical potential below the Coulomb barrier
• Astrophysical Rates for Explosive Nucleosynthesis: Stellar and Laboratory Rates for Exotic Nuclei
• Unexpected properties of the ${}^{33}$S($\alpha$,p)${}^{36}$Cl reaction cross section at low energies
• An ERC Starting Grant project on p-process nucleosynthesis concluded