Level structure of the Tz=-1 nucleus Ar 34 and its relevance for nucleosynthesis in ONe novae
The 24Mg+12C fusion reaction was used to perform a detailed ¿-ray spectroscopy study of the astrophysically important nucleus 34Ar. In particular, an experimental setup, coupling the advanced ¿-ray tracking array GRETINA with the well-established Argonne fragment mass analyzer (FMA), was employed to...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/350737 |
| Acceso en línea: | https://hdl.handle.net/2117/350737 https://dx.doi.org/10.1103/PhysRevC.103.035805 |
| Access Level: | acceso abierto |
| Palabra clave: | Nucleosynthesis Nuclear astrophysics Nuclear fusion Hydrostatic stellar nucleosynthesis Low & intermediate energy heavy-ion reactions Nucleosynthesis in explosive environments Radiative capture Nucleosíntesi Astrofísica nuclear Fusió nuclear Àrees temàtiques de la UPC::Física |
| Sumario: | The 24Mg+12C fusion reaction was used to perform a detailed ¿-ray spectroscopy study of the astrophysically important nucleus 34Ar. In particular, an experimental setup, coupling the advanced ¿-ray tracking array GRETINA with the well-established Argonne fragment mass analyzer (FMA), was employed to obtain excitation energies and spin-parity assignments for excited states in 34Ar, both above and below the proton separation energy. For the first time, an angular distribution analysis of in-beam ¿ rays from fusion-evaporation reactions, using a tracking array, has been performed and Coulomb energy differences of analog states in the T=1, A=34 mirror system, explored from 0 to 6 MeV. Furthermore, we present a comprehensive discussion of the astrophysical 33Cl(p,¿) stellar reaction rate, together with implications for the identification of nova presolar grains from sulfur isotopic abundances. |
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