Suppression of the centrifugal barrier effects in the off-energy-shell neutron plus O-17 interaction

0391535 - ÚJF 2014 RIV US eng J - Článek v odborném periodiku
Gulino, M. - Spitaleri, C. - Tang, X. D. - Guardo, G. L. - Lamia, L. - Cherubini, S. - Burjan, Václav - Couder, M. - Davies, P. - deBoer, R. - Fang, X. - Goldberg, V. Z. - Hons, Zdeněk - Kroha, Václav - Lamm, L. - La Cognata, M. - Li, C. - Ma, C. - Mrázek, Jaromír - Mukhamedzhanov, A. M. - Notani, M. - O´Brien, S. - Pizzone, R. G. - Rapisarda, G. G. - Roberson, D. - Sergi, M. L. - Tan, W. - Thompson, I. J. - Wiescher, M.
Suppression of the centrifugal barrier effects in the off-energy-shell neutron plus O-17 interaction.
Physical Review. C. Roč. 87, č. 1 (2013), 012801. ISSN 0556-2813
Grant CEP: GA ČR GAP203/10/0310; GA MŠMT(XE) LM2011019; GA MŠMT(CZ) LH11001
Institucionální podpora: RVO:61389005
Klíčová slova: cross-section * nuclear astrophysics * Trojan Horse
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 3.881, rok: 2013
http://prc.aps.org/pdf/PRC/v87/i1/e012801

The reaction O-17(n, alpha)C-14 was studied at energies from E-c.m. = 0 to E-c.m. = 350 keV by using the quasifree deuteron breakup in the three-body reaction O-17 + d -> alpha + C-14 + p, which extended the Trojan Horse indirect method (THM) to neutron-induced reactions. It is found that the O-18 excited state at E* = 8.125 +/- 0.002 MeV, observed in THM experiments, is absent in the direct measurement because of its high centrifugal barrier. The angular distributions of the populated resonances have been measured by using this method. The results unambiguously indicate the ability of the THM to overcome the centrifugal barrier suppression effect and to pick out the contribution of the bare nuclear interaction.
Trvalý link: http://hdl.handle.net/11104/0220567