Direct Measurement of Carbon Fusion at Astrophysical Energies with Gamma-Particle Coincidences

M. Heine; G. Fruet; S. Courtin; D.G. Jenkins; P. Adsley; A. Brown; R. Canavan; W.N. Catford; E. Charon; D. Curien; S. Della Negra; J. Duprat; F. Hammache; J. Lesrel; G. Lotay; A. Meyer; E. Monpribat; D. Montanari; L. Morris; M. Moukaddam; J. Nippert; Zs. Podolyák; P.H. Regan; I. Ribaud; M. Richer; M. Rudigier; R. Shearman; N. de Séréville; C. Stodel

doi:10.1051/epjconf/202226001004

All issues

Volume 260 (2022)

EPJ Web Conf., 260 (2022) 01004

Abstract

Open Access

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


Article Number		01004
Number of page(s)		4
Section		Nuclear Reaction Rates and Stellar Abundances
DOI		https://doi.org/10.1051/epjconf/202226001004
Published online		24 February 2022

EPJ Web of Conferences 260, 01004 (2022)
https://doi.org/10.1051/epjconf/202226001004

Direct Measurement of Carbon Fusion at Astrophysical Energies with Gamma-Particle Coincidences

M. Heine¹^*, G. Fruet¹, S. Courtin¹^,2, D.G. Jenkins³, P. Adsley⁴, A. Brown³, R. Canavan⁵^,6, W.N. Catford⁵, E. Charon⁷, D. Curien¹, S. Della Negra⁴, J. Duprat⁸, F. Hammache⁴, J. Lesrel⁴, G. Lotay⁵, A. Meyer⁴, E. Monpribat¹, D. Montanari¹^,2, L. Morris³, M. Moukaddam¹, J. Nippert¹, Zs. Podolyák⁵, P.H. Regan⁵^,6, I. Ribaud⁴, M. Richer¹, M. Rudigier⁵, R. Shearman⁵^,6, N. de Séréville⁴ and C. Stodel⁹

¹ Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
² USIAS/Université de Strasbourg, Strasbourg, F-67083, France
³ University of York, York, YO10 5DD, UK
⁴ IPN, CNRS/IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
⁵ Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
⁶ National Physical Laboratory, Teddington, Middlesex, TW110 LW, UK
⁷ NIMBE, CEA, CNRS, Université Paris-Saclay CEA Saclay F-91191 Gif sur Yvette, France
⁸ CSNSM, Université Paris Sud, UMR 8609-CNRS/IN2P3, F-91405 Orsay, France
⁹ GANIL, CEA/DSM-CNRS/IN2P3, Caen, F-14076, France

^* e-mail: marcel.heine@iphc.cnrs.fr

Published online: 24 February 2022

Abstract

We present ¹²C+¹²C direct fusion measurements with STELLA UKFATIMA, that reach into the region of astrophysics interest relevant to massive stars (M_⊙ ≈ 25) using self-supporting thin rotating carbon foils [1]. We demonstrate that detecting gammas and light charged particles in coincidence with nanosecond timing is key for effective background reduction achieving reliable measurements in the sub-nanobarn range. We give details about core developments of the detection apparatus as well as the coincidence-analysis procedure of low count statistics. The present data largely follows the phenomenological hindrance interpolation and shows indication for resonant behaviour at the lowest energy explored.

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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