| Issue |
EPJ Web Conf.
Volume 304, 2024
HINPw7 – 7th International Workshop of the Hellenic Institute of Nuclear Physics on Nuclear Structure, Astrophysics and Reaction Dynamics
|
|
|---|---|---|
| Article Number | 02003 | |
| Number of page(s) | 4 | |
| Section | Astrophysics | |
| DOI | https://doi.org/10.1051/epjconf/202430402003 | |
| Published online | 08 October 2024 | |
https://doi.org/10.1051/epjconf/202430402003
Experimental study of 6He Coulomb breakup as an indirect measurement of 4He(2n,γ)6He reaction rate for the astrophysical r-process
1 Instituto de Física, Universidad Nacional Autónoma de México, A.P. 20-364, Mexico City 01000, Mexico
2 Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
3 Departamento de FAMN, Universidad de Sevilla, 41080 Sevilla, Spain
4 Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
5 Departamento de Ciencias Integradas y Centro de Estudios Avanzados en Fisica,Matemáticas y Computación, Universidad de Huelva, 21071 Huelva, Spain
6 INFN Laboratori Nazionali del Sud and Sezione di Catania, I95123 Catania, Italy
7 Facoltà di Ingegneria e Architettura, Università degli Studi di Enna “Kore”, 94100 Enna, Italy
8 LIP, and Faculty of Sciences, University of Lisbon, 1000-149 Lisbon, Portugal
9 Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
10 Departamento de Aceleradores y Estudio de Materiales, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, Codigo Postal 11801, Mexico City, Distrito Federal, Mexico
11 Centro Nacional de Aceleradores (U. Sevilla, J. Andalucía, CSIC), Tomás Alva Edison, 7, 41092 Sevilla, Spain
12 Dipartimento di Fisica, Università di Napoli “Federico II”, 80131, Naples, Italy
13 Dipartimento di Fisica e Astronomia ‘Galileo Galilei’, Universitá di Padova, 35121 Padova, Italy
14 CEA/DAM, Chem. du Ru, 91680 Bruyères-le-Châtel, France
* e-mail: david.godos@alu.uhu.es
Published online: 8 October 2024
In this work, we report the measurement of elastic and Coulomb break-up channels in 6He+208Pb collisions at Elab = 19.3 MeV, close to the Coulomb barrier of this system ∼ 19 MeV. In the context of the astrophysical r-process, the reaction 4He(2n,γ)6He has been proposed to be a key reaction in the path of synthesizing seed nuclei for the r-process, as 12C, in an environment composed mainly of alpha particles and neutrons. Based on a theoretical approach for treating three body reactions by means of which its reaction rate can be inferred, our experimental approach aims to obtain an indirect measurement of the reaction rate of 4He(2n,γ)6He by measuring the Coulomb breakup of 6He under the intense electric field produced by a 208Pb target nucleus. The experiment was carried out at the TriSol facility operated in the Nuclear Science Laboratory of the University of Notre Dame, USA, which delivered a 6He beam together with other contaminants. Particular care must be taken for the alpha particles produced in the production reaction.
© The Authors, published by EDP Sciences, 2024
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