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        Alpha induced reaction cross section measurements on 162Er for the astrophysical γ process

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        1_s2.0_S0370269314004067_main.pdf (PDF, 456Kb)
        Author
        Kiss, G. G.
        Szücs, T.
        Rauscher, T.
        Török, Z.
        Fülöp, Z.
        Gyürky, G.
        Halász, Z.
        Somorjai, E.
        Attention
        2299/13839
        Abstract
        The cross sections of the Er162(α,γ)Yb166 and Er162(α,n)Yb165 reactions have been measured for the first time. The radiative alpha capture reaction cross section was measured from Ec.m.=16.09MeV down to Ec.m.=11.21MeV, close to the astrophysically relevant region (which lies between 7.8 and 11.48 MeV at 3 GK stellar temperature). The Er162(α,n)Yb165 reaction was studied above the reaction threshold between Ec.m.=12.19 and 16.09MeV. The fact that the Er162(α,γ)Yb166 cross sections were measured below the (α,n) threshold at first time in this mass region opens the opportunity to study directly the α-widths required for the determination of astrophysical reaction rates. The data clearly show that compound nucleus formation in this reaction proceeds differently than previously predicted. © 2014 Elsevier B.V.
        Publication date
        2014-07-30
        Published in
        Physics Letters B
        Published version
        https://doi.org/10.1016/j.physletb.2014.06.011
        Other links
        http://hdl.handle.net/2299/13839
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