The 26Al(n,α)23Na reaction cross section and its influence on the Galactic 26Al abundance

Liesbeth De Smet, Cyriel Wagemans, Jan Wagemans, Jan Heyse, Jack Van Gils, Lucia Popescu

    Research outputpeer-review


    The 26Al(n,α)23Na reaction cross section has been studied at the linear accelerator GELINA of the Institute for Reference Materials and Measurements in Geel, Belgium, and has been determined up to a neutron energy of about 100 keV using the time-of-flight technique. Six resonances could be observed in this energy region,whereas before only one had been identified experimentally. For four of them, resonance parameters such as resonance energy, total width, area, and spin of the state could be determined. From the obtained 26Al(n, α)23Na cross section data, Maxwellian averaged cross section (MACS) values were calculated by numerical integration. Since neutron induced reactions are among the major destruction mechanisms of 26Al in our Galaxy, these new MACS values contribute to a better understanding of the observed 26Al abundance.
    Original languageEnglish
    Pages (from-to)45804-45804
    JournalPhysical Review C
    Issue number4
    StatePublished - Oct 2007

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