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        A CVD diamond detector for (n,alpha) cross section measurements

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        ENAS_6_015.pdf (PDF, 1Mb)
        Author
        Weiss, C.
        Badurek, G.
        Berthoumieux, E.
        Calviani, M.
        Chiaveri, E.
        Dobos, D.
        Griesmayer, E.
        Guerrero, C.
        Jericha, E.
        Kaeppeler, F.
        Leeb, H.
        Rauscher, T.
        Vlachoudis, V.
        Attention
        2299/14716
        Abstract
        In astrophysics, the determination of the optical alpha-nucleus potential for low alpha-particle energies, crucial in understanding the origin of the stable isotopes, has turned out to be a challenge. Theory still cannot predict the optical potentials required for the calculation of the astrophysical reaction rates in the Hauser-Feshbach statistical model and there is scant experimental information on reactions with alpha particles at the relevant astrophysical energies. Measurements of (n,alpha) cross-sections offer a good opportunity to study the alpha channel. At the n_TOF experiment at CERN, a prototype detector, based on the chemical vapor deposition (CVD) diamond technology, has been recently developed for (n,alpha) measurements. A reference measurement of the 10B(n,alpha)7Li reaction was performed in 2011 at n_TOF as a feasibility study for this detector type. The results of this measurement and an outline for future experiments are presented here.
        Publication date
        2012-01
        Published in
        Experimental Nuclear Astrophysics
        Other links
        http://hdl.handle.net/2299/14716
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