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New22Ne(α,n)25Mg-resonances at very low energies relevant for the astrophysical s-process

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

The 22Ne(α,n)25Mgreaction is thought to be one of the main neutron sources for the astrophysical s-process. Thus cross section data for this reaction have been obtained from near the threshold (E α≈570keV) up toE α=2100 keV using the 4 MV DYNAMITRON accelerator at Stuttgart, the windowless gastarget system RHINOCEROS and a 4π neutron detector. Two new resonances have been observed atE α=623 ± 6 and 838 ± 6 kev, which dominate the reaction rate at T9<0.3.Possible background reactions are discussed.

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Authors and Affiliations

  1. Institut für Strahlenphysik der Universität Stuttgart, W-7000, Stuttgart 80, Federal Republic of Germany

    H. W. Drotleff, A. Denker, J. W. Hammer, H. Knee, S. Küchler & D. Streit

  2. Institut für Experimentalphysik (III) der Universität Bochum, W-4630, Bochum 1, Federal Republic of Germany

    C. Rolfs & H. P. Trautvetter

Authors
  1. H. W. Drotleff
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  2. A. Denker
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  3. J. W. Hammer
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  4. H. Knee
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  5. S. Küchler
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  6. D. Streit
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  7. C. Rolfs
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  8. H. P. Trautvetter
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Drotleff, H.W., Denker, A., Hammer, J.W. et al. New22Ne(α,n)25Mg-resonances at very low energies relevant for the astrophysical s-process. Z. Physik A - Hadrons and Nuclei 338, 367–368 (1991). https://doi.org/10.1007/BF01288203

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  • DOI: https://doi.org/10.1007/BF01288203

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