https://doi.org/10.1051/epjconf/201716501017
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: laszlo.csedreki@lngs.infn.it
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
