Indirect measurement of the (n,p) reaction cross section at Big Bang energies

R. G. Pizzone; C. Spampinato; R. Spartá; M. Couder; W. Tan; V. Burjan; G. D’Agata; G. L. Guardo; M. La Cognata; L. Lamia; J. Mrazek; S. Palmerini; S. Typel; A. Tumino; M. Wiescher; S. Anguilar; D. Bardayan; D. Blankstein; L. Boccioli; L. Callahan; S. M. Cha; K. Y. Chae; A. M. Clark; B. Frentz; M. R. Hall; A. Gula; S. Henderson; R. Kelmar; M. S. Kwag; I. Indelicato; M. La Commara; D. Lattuada; Q. Liu; J. Long; M. Mazzocco; A. Majumdar; S. McGuinness; A. Nelson; A. A. Oliva; P. O’Malley; P. M. Prajapati; G. G. Rapisarda; S. Romano; M. L. Sergi; C. Seymour; M. Skulski; C. Spitaleri; J. Wilkinson

doi:10.1140/epja/s10050-020-00212-x

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A (2020) 56: 199
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

R. G. Pizzone¹^*, C. Spampinato¹^,2^,3, R. Spartá¹^,2, M. Couder⁴, W. Tan⁴, V. Burjan⁵, G. D’Agata⁵, G. L. Guardo¹, M. La Cognata¹, L. Lamia¹^,2^,3, J. Mrazek⁵, S. Palmerini⁶^,7, S. Typel⁸^,9, A. Tumino¹^,10, M. Wiescher⁴, S. Anguilar⁴, D. Bardayan⁴, D. Blankstein⁴, L. Boccioli⁴^,6^,7, L. Callahan⁴, S. M. Cha¹¹, K. Y. Chae¹¹, A. M. Clark⁴, B. Frentz⁴, M. R. Hall⁴, A. Gula⁴, S. Henderson⁴, R. Kelmar⁴, M. S. Kwag¹¹, I. Indelicato¹, M. La Commara¹², D. Lattuada¹^,10, Q. Liu⁴, J. Long⁴, M. Mazzocco¹³, A. Majumdar⁴, S. McGuinness⁴, A. Nelson⁴, A. A. Oliva¹^,2^,3, P. O’Malley⁴, P. M. Prajapati¹, G. G. Rapisarda¹, S. Romano¹^,2^,3, M. L. Sergi¹^,2, C. Seymour⁴, M. Skulski⁴, C. Spitaleri¹^,2 and J. Wilkinson⁴

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

Abstract

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.