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Cross section measurements of proton capture reactions on Mo isotopes relevant to the astrophysical p process

  • Regular Article - Experimental Physics
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Abstract.

Cross section measurements of (\(p, \gamma\)) reactions on the Mo isotopes have been performed at beam energies from 2 to 6.2 MeV that are relevant to the p-process. Partial cross sections and isomeric ratios were also determined for the 92Mo case. Astrophysical S factors as well as reaction rates were derived from the experimental cross sections. Statistical model calculations were performed using the latest version (1.9) of the statistical model code TALYS and were compared with the new data. An overall good agreement between theory and experiment was found. In addition, the effect of different combinations of the nuclear input parameters entering the stellar reaction-rate calculations was investigated. It was found that, for certain combinations of optical-model potentials, nuclear level densities and \(\gamma\)-ray strength functions, the nuclear uncertainties propagated through the Hauser-Feshbach calculations are less than a factor of 2 which is well below the average discrepancies of the calculated p-nuclei abundances and the observations.

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Author information

Author notes

  1. V. Foteinou

    Present address: Present address: DTL/RUBION, Ruhr-Universität, Universitätsstrasse 150, 40781, Bochum, Germany

  2. G. Provatas

    Present address: Present address: Rud̄er Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia

Authors and Affiliations

  1. TANDEM Accelerator Laboratory, Institute of Nuclear and Particle Physics, NCSR “Demokritos”, 153.10, Aghia Paraskevi, Athens, Greece

    V. Foteinou, M. Axiotis, S. Harissopulos, G. Provatas & A. Lagoyannis

  2. Nuclear Data Section, International Atomic Energy Agency, 1400, Vienna, Austria

    P. Dimitriou

  3. DTL/RUBION, Ruhr-Universität Bochum, Universitätsstrasse 150, 40781, Bochum, Germany

    H. -W. Becker & D. Rogalla

  4. Institut fur Kernphysik, Universität zu Köln, Zülpicherstr. 77, 50937, Cologne, Germany

    A. Zilges, A. Schreckling & A. Endres

Authors
  1. V. Foteinou
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  2. M. Axiotis
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  3. S. Harissopulos
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  4. P. Dimitriou
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Corresponding author

Correspondence to S. Harissopulos.

Additional information

Communicated by P. Woods

Data Availability Statement

This manuscript has associated data in a data repository. [Authors’ comment: No data deposited elsewhere.]

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Foteinou, V., Axiotis, M., Harissopulos, S. et al. Cross section measurements of proton capture reactions on Mo isotopes relevant to the astrophysical p process. Eur. Phys. J. A 55, 67 (2019). https://doi.org/10.1140/epja/i2019-12738-x

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