| Autor: |
Chillery, Thomas, Aliotta, M., Bruno, C. G., Davinson, T. |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Zdroj: |
Chillery, T, Aliotta, M & Bruno, C G & Davinson, T 2020, ' Underground experimental study finds no evidence of low-energy resonance in the 6Li(p,γ)7Be reaction ', Physical Review C, vol. 102, no. 5, 052802(R) . https://doi.org/10.1103/PhysRevC.102.052802 |
| DOI: |
10.1103/PhysRevC.102.052802 |
| Popis: |
The astrophysical 6Li(p,γ)7Be reaction occurs during Big Bang nucleosynthesis and the pre-main sequence and main sequence phases of stellar evolution. The low-energy trend of its cross section remains uncertain, since different measurements have provided conflicting results. A recent experiment reported a resonance-like structure at center-of-mass energy 195 keV, associated to a positive-parity state of 7Be. The existence of such resonance is still a matter of debate. We report a new measurement of the 6Li(p,γ)7Be cross section performed at the Laboratory for Underground Nuclear Astrophysics, covering the center-of-mass energy range E = 60 - 350 keV. Our results rule out the existence of low-energy resonances. The astrophysical S-factor varies smoothly with energy, in agreement with theoretical models. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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