Low-energy resonances in the 22Ne(p,γ)23Na reaction directly observed at LUNA
1 Dipartimento di Fisica, Università degli studi di Genova and INFN Genova, 1646 Genova, Italy
2 Dipartimento di Fisica e Astronomia, Università degli studi di Padova and INFN Padova, 35131 Padova, Italy
Published online: 28 May 2015
The 22Ne(p,γ)23Na reaction is involved in the hydrogen burning neon-sodium (NeNa) cycle. This cycle is active in asymptotic giant branch stars (AGB) as well as in novae.
In the Gamow window temperature range (30MK < T < 420 MK corresponding to proton center of mass energies 40 keV < E < 430 keV), the 22Ne(p,γ)23Na reaction rate is highly uncertain because of the contribution of a large number of resonances never measured directly.
A study of this reaction has been carried out at the Laboratory for Underground Nuclear Astrophysics (LUNA), in the Gran Sasso National Laboratory, using a windowless gas target and two high-purity germanium detectors. Several resonances have been observed for the first time in a direct experiment.
© Owned by the authors, published by EDP Sciences, 2015
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