0486831 - ÚJF 2018 GB eng C - Conference Paper (international conference)
La Cognata, M. - Spitaleri, C. - Mukhamedzhanov, A. - Tribble, R. E. - Al-Abdullah, T. - Banu, A. - Cherubini, S. - Coc, A. - Crucilla, V. - Goldberg, V. - Gulino, M. - Irgaziev, B. - Kiss, G. G. - Lamia, L. - Mrázek, Jaromír - Pizzone, R. G. - Puglia, S. M. R. - Rapisarda, G. G. - Romano, S. - Sergi, M. L. - Tabacaru, G. - Trache, L. - Trzaska, W. - Tudisco, S. - Tumino, A.
First measurement of the O-18(p, alpha)N-15 cross section at astrophysical energies.
Journal of Physics: Conference Series. Vol. 202. Bristol: IOP Publishing, 2010, č. článku 012019. ISSN 1742-6588.
[4th International Conference on Nuclear Physics in Astrophysics. Frascati (IT), 08.06.2009-12.06.2009]
Institutional support: RVO:61389005
Keywords : spectroscoic measurements * astrophysics * resonance
OECD category: Astronomy (including astrophysics,space science)

The O-18(p, alpha)N-15 reaction rate has been deduced by means of the Trojan horse method. For the first time the contribution of the 20 keV resonance has been directly evaluated, giving a value about 35% larger than the one in the literature. Moreover, the present approach has allowed to improve the accuracy by a factor 8.5, as it is based on the measured strength instead of spectroscopic measurements. The contribution of the 90 keV resonance has been also determined, which turned out to be of negligible importance to astrophysics.
Permanent Link: http://hdl.handle.net/11104/0281544