Abstract

We discuss new results concerning the investigation of the 19F(p,α 0)16O reaction at very low energies (0.6-0.2 MeV). This reaction is important both in Nuclear Astrophysics, because it closes the CNOF cycle and it is an important fluorine destruction channel in hydrogen rich stellar environments, and in Nuclear Structure, because it allows to study the spectroscopy of the self-conjugated 20Ne compound nucleus. Despite its importance, very few direct data have been published at low energies in the literature. Our work allowed to deduce the S-factor down to ≈ 0.2 MeV and to point out the role played by broad resonances at low energies. The experimental S-factor is ≈1.5-2 times larger than non-resonant extrapolations reported by nacre with potentially important astrophysical consequences.

Details

Title
New direct investigation of the 19F(p,α 0)16O down to 0.2 MeV
Author
Lombardo, I 1 ; D Dell’Aquila 1 ; A Di Leva 1 ; Indelicato, I 2 ; La Cognata, M 2 ; La Commara, M 2 ; A Ordine 3 ; Rigato, V 4 ; Romoli, M 3 ; Rosato, E 1 ; Spadaccini, G 1 ; Spitaleri, C 2 ; Tumino, A 5 ; Vigilante, M 1 

 Dipartimento di Fisica, Università di Napoli Federico II, Via Cinthia, 80126, Napoli, Italy; INFN - Sezione di Napoli, Via Cinthia, 80126, Napoli, Italy 
 Dipartimento di Fisica ed Astronomia, Università di Catania, Via S. Sofia, 95125, Catania, Italy; INFN - Laboratori Nazionali del Sud, Via S. Sofia, 95125, Catania, Italy 
 INFN - Sezione di Napoli, Via Cinthia, 80126, Napoli, Italy 
 INFN - Laboratori Nazionali di Legnaro, Legnaro (Padova), Italy 
 INFN - Laboratori Nazionali del Sud, Via S. Sofia, 95125, Catania, Italy; Facoltà di Ingegneria e Architettura, Univ. Kore di Enna, Enna, Italy 
Publication year
2018
Publication date
Jan 2018
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2571918252
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.