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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

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Introduction of the new LUNA experimental setup for high precision measurement of the<sup>13</sup>C(α,n)<sup>16</sup>O reaction for astrophysical purposes

Introduction of the new LUNA experimental setup for high precision measurement of the13C(α,n)16O reaction for astrophysical purposes

Introduction of the new LUNA experimental setup for high precision measurement of the¹³C(α,n)¹⁶O reaction for astrophysical purposes