Počet záznamů: 1

Indirect study of B-11(p,alpha(0))Be-8 and B-10(p,alpha)Be-7 reactions at astrophysical energies by means of the Trojan Horse Method: recent results

  1. 1.
    0346844 - UJF-V 2011 RIV NL eng J - Článek v odborném periodiku
    Lamia, L. - Puglia, S.M.R. - Spitaleri, C. - Romano, S. - Del Santo, M. G. - Carlin, N. - Munhoz, M. G. - Cherubini, S. - Kiss, G.G. - Kroha, Václav - Kubono, S. - La Cognata, M. - Li, C. B. - Pizzone, R. G. - Wen, Q. G. - Sergi, M. L. - de Toledo, A. S. - Wakabayashi, Y. - Yamaguchi, H. - Zhou, S. H.
    Indirect study of B-11(p,alpha(0))Be-8 and B-10(p,alpha)Be-7 reactions at astrophysical energies by means of the Trojan Horse Method: recent results.
    Nuclear Physics. A. Roč. 834, 1-4 (2010), 655C-657C ISSN 0375-9474.
    [10th International Conference on Nucleus-Nucleus Collisions (NN2009). Beijing, 16.08.2009-21.08.2009]
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: CROSS-SECTIONS * NUCLEAR ASTROPHYSICS * RELEVANT
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 1.986, rok: 2010

    Nuclear (p,alpha) reactions destroying the so-called "light-elements" lithium, beryllium and boron have been largely studied in the past mainly because their role in understanding some astrophysical phenomena, i.e. mixing-phenomena occurring in young F-G stars [1]. Such mechanisms transport the surface material down to the region close to the nuclear destruction zone, where typical temperatures of the order of similar to 10(6) K are reached. The corresponding Gamow energy E-0=1.22 (Z(x)(2)Z(X)(2)T(6)(2))(1/3) [2] is about similar to 10 keV if one considers the "boron-case" and replaces in the previous formula Z(x) = 1, Z(X) = 5 and T-6 = 5. Direct measurements of the two B-11(p,alpha(0))Be-8 and B-10(p,alpha)Be-7 reactions in correspondence of this energy region are difficult to perform mainly because the combined effects of Coulomb barrier penetrability and electron screening [3].
    Trvalý link: http://hdl.handle.net/11104/0187762