Measurement of the 7Be(p, γ)8B reaction cross section with the recoil mass separator ERNA

Raffaele Buompane; Antonino Di Leva; Lucio Gialanella; Antonio D’Onofrio; Mario De Cesare; G. Duarte Jeremias; Zsolt Fülöp; R. Gasques Leandro; György Gyürky; Lizeth Morales-Gallegos; Fabio Marzaioli; Giancarlo Palumbo; Giuseppe Porzio; David Rapagnani; Vincenzo Roca; Detlef Rogalla; Mauro Romoli; Claudio Santonastaso; Daniel Schürmann

doi:10.1051/epjconf/202226011006

All issues

Volume 260 (2022)

EPJ Web Conf., 260 (2022) 11006

Abstract

Open Access

Issue		EPJ Web Conf. Volume 260, 2022 The 16^th International Symposium on Nuclei in the Cosmos (NIC-XVI)


Article Number		11006
Number of page(s)		6
Section		Poster
DOI		https://doi.org/10.1051/epjconf/202226011006
Published online		24 February 2022

EPJ Web of Conferences 260, 11006 (2022)
https://doi.org/10.1051/epjconf/202226011006

Measurement of the ⁷Be(p, γ)⁸B reaction cross section with the recoil mass separator ERNA

Raffaele Buompane¹^,2^*, Antonino Di Leva²^,3, Lucio Gialanella¹^,2, Antonio D’Onofrio¹^,2, Mario De Cesare⁴, G. Duarte Jeremias¹^,2, Zsolt Fülöp⁵, R. Gasques Leandro⁶, György Gyürky⁵, Lizeth Morales-Gallegos², Fabio Marzaioli¹^,2, Giancarlo Palumbo²^,7, Giuseppe Porzio¹^,2, David Rapagnani²^,3, Vincenzo Roca¹^,2, Detlef Rogalla⁸, Mauro Romoli², Claudio Santonastaso¹^,2 and Daniel Schürmann¹^,2

¹ Dipartimento di Matematica e Fisica, Università della Campania “L. Vanvitelli“, Viale Lincoln, 5, Caserta, Italy, EU
² Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Via Cinthia snc, Napoli, Italy, EU
³ Dipartimento di Fisica “E. Pancini“, Università di Napoli “Federico II“, Via Cinthia snc, Napoli, Italy, EU
⁴ Dipartimento di Metodologie e Tecnologie per le Osservazioni e Misure, Centro Italiano Ricerche Aerospaziali, Capua, Italy, EU
⁵ Institute for Nuclear Research (Atomki), H-4001 Debrecen, Hungary, EU
⁶ Departamento de Física Nuclear, Instituto de Física da Universidade de São Paulo, São Paulo, SP, Brazil
⁷ Dipartimento di Economia, Management Istituzioni -Laboratorio Chimico-Merceologico, Università degli Studi di Napoli “Federico II“, Napoli, Italy, EU
⁸ RUBION, Ruhr-Universität Bochum, Bochum, Germany, EU

^* e-mail: raffaele.buompane@unicampania.it

Published online: 24 February 2022

Abstract

The cross section of ⁷Be(p,γ)⁸B represents one of the most important nuclear inputs for the prediction of the high energy component of solar neutrinos and it has also a direct impact on the ⁷Li abundance after the Big Bang Nucleosynthesis. The importance of this reaction triggered an intense experimental work over the last decades, where discrepancies were observed between the results of different measurements. In addition, a question remains about possible common systematic effects, considering that all measurements share the same experimental approach, i.e. an intense proton beam impinging on a ⁷Be radioactive target. Inverse kinematics, i.e. a ⁷Be ion beam and a hydrogen target, with the direct measurement of the total reaction cross section by means of the detection of the ⁸B recoils, can shed light on such systematic effects. Efforts attempted so far were limited by the low ⁷Be beam intensity. We present here the results of a new measurement at E_cm = 376 to 819 keV using a high intensity ⁷Be beam in combination with a windowless gas target and the recoil mass separator ERNA (European Recoil mass separator for Nuclear Astrophysics) at CIRCE (Center for Isotopic Research on Cultural and Environmental heritage), Caserta, Italy. Our results, including the systematic error, are compatible with previous measurements that yields lower value of S₁₇(0) and are compatible with the currently accepted value from [1] only at a 2-σ level.

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.

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