Low energy radioactive beamsCarmen Angulo, CRC Louvain-la-Neuve,
BelgiumFINUPHY meetingLouvain-la-Neuve, Belgium3-4 May 2004Recent
highlights on nuclear astrophysics and exotic light nuclei at
Louvain-la-Neuve
Carmen AnguloFINUPHY meeting 3-4 May 2004
6He b-delayed a+d emission Study of 5H and 7He10C+p Study of
11N15O(a,a)15O 19Ne(p,g)20Na Hot CNO cycle14O(a,p)17F: trigger to
the rp processUnique set-upsUnique beams: 6He, 7Be, 18FNew
beams:10C,15O,19NeCYC44New developments
Carmen AnguloFINUPHY meeting 3-4 May 2004
Carmen AnguloFINUPHY meeting 3-4 May 2004
The first 19Ne radioactive beam at CYCLONE44Characterization of
ARES and study of the 19Ne(p,g)20Ne reaction
Manol Couder, PhD thesis, June 2004
Carmen AnguloFINUPHY meeting 3-4 May 2004
(p,g) reactions in astrophysics Important in quiescent burning
and in explosive environments such asStandard technique: g
detection . BUT Background problems Difficult determination of
total efficiencyRecoil separators for astrophysics research: ARES
(Louvain-la-Neuve), ERNA (Bochum) DRAGON (TRIUMF)
Carmen AnguloFINUPHY meeting 3-4 May 2004
Characterization with a 19F stable beam: 19F(p,g)20Ne
Study of 19Ne(p,g)20Na with a 19Ne radioactive beam from
CYCLONE44
Carmen AnguloFINUPHY meeting 3-4 May 2004
Characterization of ARES: 19F(p,g)20Ne20Ne19F leaky beamBeam
energy distribution Beam transport : charge state
distributionProduct transmission: 20Ne7+ (11.5 0.4) %Rejection
power: (2-5)10-719F(p,g)20NeM. Couder et al., NIM A 506
(2003)26.Energy (keV)CountsTotal efficiency
Carmen AnguloFINUPHY meeting 3-4 May 2004
19Ne(p,g)20NaPrevious experiments:Coszach et al. 1994Page et al.
1994Michotte et al. 1996Vancraynest et al. 1998
Theory:Lamm et al. 1990Fortune et al. 2000
Carmen AnguloFINUPHY meeting 3-4 May 2004
Study of the 448 keV resonance in19Ne(p,g)20Ne with a 19Ne
RIBBeam intensity ~ 108 pps (reduced)DE (keV)DE+E (MeV)19Ne leaky
beampile-up20Ne reaction product expectedM. Couder et al., Phys.
Rev. C (R) (2004)RESULTSUpper limit with 90 % C.L.: wg
