Introduction of the new LUNA experimental setup for high precision measurement of the 13C(α,n)16O reaction for astrophysical purposes
1 INFN, Laboratori Nazionali del Gran Sasso, Via Giovanni Acitelli 22, 67100 Assergi, Italy
2 Università di Napoli Federico II and INFN, Sezione di Napoli, Via Cintia, 80126 Napoli, Italy
3 Gran Sasso Science Institute, Viale Francesco Crispi 7, 67100 L’Aquila, Italy
* Corresponding author: firstname.lastname@example.org
Published online: 30 December 2017
The 13C(α,n)16O reaction is the prevalent neutron source for the main s-process. The direct measurement of this reaction at stellar temperature (kT=8 keV) has so far not been possible due to the very low cross section at the corresponding energy. The extrapolation of the astrophysical S-factor of this reaction into the Gamow window (Eα,c.m.=140-230 keV) is complicated by the large uncertainties of the low-energy experimental data and the existence of a state of 17O near the α-threshold that can have a large effect on low energy cross section. The aim of this paper is to introduce the new LUNA experimental setup, dedicated to the investigation of 13C(α,n)16O reaction below Eα,lab=400 keV.
© The Authors, published by EDP Sciences, 2017
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