Proton-Capture Rates on Carbon Isotopes and Their Impact on the Astrophysical 12C/13C Ratio
- Creators
- J. Skowronski
- A. Boeltzig
- G. F. Ciani
- L. Csedreki
- D. Piatti
- M. Aliotta
- C. Ananna
- F. Barile
- D. Bemmerer
- A. Best
- C. Broggini
- C. G. Bruno
- A. Caciolli
- M. Campostrini
- F. Cavanna
- P. Colombetti
- A. Compagnucci
- P. Corvisiero
- T. Davinson
- R. Depalo
- A. Di Leva
- Z. Elekes
- F. Ferraro
- A. Formicola
- Z. Fülöp
- G. Gervino
- R. M. Gesuè
- A. Guglielmetti
- C. Gustavino
- G. Gyürky
- G. Imbriani
- M. Junker
- M. Lugaro
- P. Marigo
- E. Masha
- R. Menegazzo
- V. Paticchio
- R. Perrino
- P. Prati
- D. Rapagnani
- V. Rigato
- L. Schiavulli
- R. S. Sidhu
- O. Straniero
- T. Szücs
- S. Zavatarelli
- Others:
- Skowronski, J.
- Boeltzig, A.
- Ciani, G. F.
- Csedreki, L.
- Piatti, D.
- Aliotta, M.
- Ananna, C.
- Barile, F.
- Bemmerer, D.
- Best, A.
- Broggini, C.
- Bruno, C. G.
- Caciolli, A.
- Campostrini, M.
- Cavanna, F.
- Colombetti, P.
- Compagnucci, A.
- Corvisiero, P.
- Davinson, T.
- Depalo, R.
- Di Leva, A.
- Elekes, Z.
- Ferraro, F.
- Formicola, A.
- Fülöp, Z.
- Gervino, G.
- Gesuè, R. M.
- Guglielmetti, A.
- Gustavino, C.
- Gyürky, G.
- Imbriani, G.
- Junker, M.
- Lugaro, M.
- Marigo, P.
- Masha, E.
- Menegazzo, R.
- Paticchio, V.
- Perrino, R.
- Prati, P.
- Rapagnani, D.
- Rigato, V.
- Schiavulli, L.
- Sidhu, R. S.
- Straniero, O.
- Szücs, T.
- Zavatarelli, S.
Description
The 12C/13C ratio is a significant indicator of nucleosynthesis and mixing processes during hydrogen burning in stars. Its value mainly depends on the relative rates of the 12Cðp; γÞ13N and 13Cðp; γÞ14N reactions. Both reactions have been studied at the Laboratory for Underground Nuclear Astrophysics (LUNA) in Italy down to the lowest energies to date (Ec:m: 1⁄4 60 keV) reaching for the first time the high energy tail of hydrogen burning in the shell of giant stars. Our cross sections, obtained with both prompt γ-ray detection and activation measurements, are the most precise to date with overall systematic uncertainties of 7%–8%. Compared with most of the literature, our results are systematically lower, by 25% for the 12Cðp; γÞ13N reaction and by 30% for 13Cðp; γÞ14N. We provide the most precise value up to now of 3.6 +/- 0.4 in the 20–140 MK range for the lowest possible 12C/13C ratio that can be produced during H burning in giant stars.
Additional details
- URL
- https://hdl.handle.net/11567/1150315
- URN
- urn:oai:iris.unige.it:11567/1150315
- Origin repository
- UNIGE