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

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

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991zphya.338..367d&link_type=abstract

Zeitschrift für Physik A Hadrons and Nuclei, Volume 338, Issue 3, pp.367-368

Astronomy and Astrophysics

Astrophysics

10

25.55, 97.10

Scientific paper

The 22Ne(α, n)25Mg reaction 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≈570 keV) up to E 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 at E 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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