Study of the 7Be(d,3He)6Li* reaction at 5 MeV/u
The measurement of the 7Be(,3He)6Li* transfer cross section at 5 MeV/u is carried out. The population of the 2.186 MeV excited state of 6Li in this reaction channel is observed for the first time. The experimental angular distributions have been analyzed in the finite range DWBA and coupled-channel...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/168253 |
| Acceso en línea: | https://hdl.handle.net/11441/168253 https://doi.org/10.1016/j.physletb.2024.138673 |
| Access Level: | acceso abierto |
| Palabra clave: | Big-bang nucleosynthesis Primordial lithium abundance Lithium anomalies Reaction rates Primordial lithium abundance Lithium anomalies Reaction rates |
| Sumario: | The measurement of the 7Be(,3He)6Li* transfer cross section at 5 MeV/u is carried out. The population of the 2.186 MeV excited state of 6Li in this reaction channel is observed for the first time. The experimental angular distributions have been analyzed in the finite range DWBA and coupled-channel frameworks. The effect of the 7Be(,3He)6Li reaction on both the 6Li and 7Li abundances are investigated at the relevant big-bang nucleosynthesis energies. The excitation function is calculated by TALYS and normalized to the experimental data. The factor of the (,3He) channel from the present work is about 50% lower than existing data at nearby energies. At big-bang energies, the factor is about three orders of magnitude smaller than that of the (, ) channel. The (,3He) reaction rate is found to have a less than 0.1% effect on the 6,7 Li abundances. |
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