TY - JOUR
T1 - New low-energy measurement of the 18F(p,α)15O reaction
AU - de Séréville, N.
AU - Angulo, C.
AU - Leleux, P.
AU - Coc, A.
AU - Kiener, J.
AU - Lefebvre, A.
AU - Tatischeff, V.
AU - Achouri, N.L.
AU - Orr, N.
AU - Casarejos, E.
AU - Davinson, T.
AU - Robertson, D.
AU - Descouvemont, P.
AU - Figuera, P.
AU - Fox, S.
AU - Laird, A.M.
AU - Mumby-Croft, P.
AU - Vaughan, K.
AU - Hammache, F.
N1 - 7th International Conference on Radioactive Nuclear Beams, Cortina, ITALY, JUL 02-07, 2006
PY - 2007/11/1
Y1 - 2007/11/1
N2 - The F, produced during nova explosions, is the main responsible for the 511 keV γ-ray emitted during the outburst that could be detected with satellite missions or future γ-ray telescopes. In spite of many experimental efforts, the amount of F synthesized still suffers from large uncertainties concerning mainly the F(p,α)O reaction. We report here on a new direct measurement of the F (p,α)O cross section recently carried out at the RIB facility at Louvain-la-Neuve. Cross section data down to a center-of-mass energy of 400 keV have been obtained using an isobarically pure F beam (averaged intensity of the order of 10 pps) and a thin polyethylene target. The reaction products were detected using the multi-strip detector array LEDA. The cross section data are analysed in the framework of the R-matrix model. Our main aim is to determine the interference sign between three 3/2 resonances above threshold that can significantly affect the extrapolation of the F(p,α)O cross section to the energies relevant for novae, and thus, the modeling of nova explosions. © EDP Sciences/Societé Italiana di Fisica/Springer-Verlag 2007.
AB - The F, produced during nova explosions, is the main responsible for the 511 keV γ-ray emitted during the outburst that could be detected with satellite missions or future γ-ray telescopes. In spite of many experimental efforts, the amount of F synthesized still suffers from large uncertainties concerning mainly the F(p,α)O reaction. We report here on a new direct measurement of the F (p,α)O cross section recently carried out at the RIB facility at Louvain-la-Neuve. Cross section data down to a center-of-mass energy of 400 keV have been obtained using an isobarically pure F beam (averaged intensity of the order of 10 pps) and a thin polyethylene target. The reaction products were detected using the multi-strip detector array LEDA. The cross section data are analysed in the framework of the R-matrix model. Our main aim is to determine the interference sign between three 3/2 resonances above threshold that can significantly affect the extrapolation of the F(p,α)O cross section to the energies relevant for novae, and thus, the modeling of nova explosions. © EDP Sciences/Societé Italiana di Fisica/Springer-Verlag 2007.
UR - http://www.scopus.com/inward/record.url?scp=37349008299&partnerID=8YFLogxK
U2 - 10.1140/epjst/e2007-00306-5
DO - 10.1140/epjst/e2007-00306-5
M3 - Article
SN - 1951-6355
VL - 150
SP - 211
EP - 214
JO - European Physical Journal - Special Topics
JF - European Physical Journal - Special Topics
IS - 1
ER -