https://doi.org/10.1140/epja/s10050-020-00212-x
Regular Article - Experimental Physics
Indirect measurement of the
(n,p)
reaction cross section at Big Bang energies
1
Laboratori Nazionali del Sud-INFN, Catania, Italy
2
Dipartimento di Fisica e Astronomia ”Ettore Maiorana”, Universitá di Catania, Catania, Italy
3
Centro Siciliano di Fisica Nucleare e Struttura della Materia, Catania, Italy
4
Department of Physics, University of Notre Dame, Notre Dame, IN, USA
5
Nuclear Physics Institute of the Czech Academy of Sciences, 250 68, Řež, Czech Republic
6
Universitá di Perugia, Perugia, Italy
7
INFN Perugia, Perugia, Italy
8
Technische Universität Darmstadt, Fachbereich Physik, Institut für Kernphysik, Darmstadt, Germany
9
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Theorie, Darmstadt, Germany
10
Facoltá di Ingegneria e Architettura, Universitá degli Studi di Enna Kore, Enna, Italy
11
SKKU Sungkyunkwan University, Seoul, Korea
12
INFN and Universitá of Napoli, Napoli, Italy
13
Dipartimento di Fisica e Astronomia, University of Padova and INFN-Sezione di Padova, Padova, Italy
* e-mail: rgpizzone@lns.infn.it
Received:
20
April
2020
Accepted:
29
July
2020
Published online:
5
August
2020
Nuclear reactions play a key role in the framework of the Big Bang Nucleosynthesis. A network of 12 principal reactions has been identified as the main path that drove the elemental nucleosynthesis in the first 20 min of the history of the Universe. Among them an important role is played by neutron-induced reactions, which, from an experimental point of view, are usually a difficult task to be measured directly. Nevertheless big efforts in the last decades have led to a better understanding of their role in the primordial nucleosynthesis network. In this work we apply the Trojan Horse Method to extract the cross section at astrophysical energies for the (n,p)
reaction after a detailed study of the
(
,pt)H three-body process. Data extracted from the present measurement are compared with other published sets.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020