First direct measurement of the O17(p,γ)F18 reaction cross section at Gamow energies for classical novae

D. A. Scott, A. Caciolli, A. Di Leva, A. Formicola, M. Aliotta, M. Anders, D. Bemmerer, C. Broggini, M. Campeggio, P. Corvisiero, Z. Elekes, Zs. S. Fülöp, G. Gervino, A. Guglielmetti, C. Gustavino, G. Gyürky, G. Imbriani, M. Junker, M. Laubenstein, R. MenegazzoM. Marta, E. Napolitani, P. Prati, V. Rigato, V. Roca, E. Somorjai, C. Salvo, O. Straniero, F. Strieder, T. Szücs, F. Terrasi, D. Trezzi

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Classical novae are important contributors to the abundances of key isotopes, such as the radioactive F18, whose observation by satellite missions could provide constraints on nucleosynthesis models in novae. The O17(p,γ)F18 reaction plays a critical role in the synthesis of both oxygen and fluorine isotopes, but its reaction rate is not well determined because of the lack of experimental data at energies relevant to novae explosions. In this study, the reaction cross section has been measured directly for the first time in a wide energy range E c.m.200-370keV appropriate to hydrogen burning in classical novae. In addition, the E c.m.=183keV resonance strength, ωγ=1.67±0.12μeV, has been measured with the highest precision to date. The uncertainty on the O17(p,γ)F18 reaction rate has been reduced by a factor of 4, thus leading to firmer constraints on accurate models of novae nucleosynthesis.

Original languageEnglish
Article number202501
JournalPhysical Review Letters
Volume109
Issue number20
DOIs
Publication statusPublished - Nov 13 2012

Fingerprint

novae
cross sections
nuclear fusion
fluorine isotopes
reaction kinetics
energy
oxygen isotopes
explosions
isotopes
hydrogen
synthesis

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Scott, D. A., Caciolli, A., Di Leva, A., Formicola, A., Aliotta, M., Anders, M., ... Trezzi, D. (2012). First direct measurement of the O17(p,γ)F18 reaction cross section at Gamow energies for classical novae. Physical Review Letters, 109(20), [202501]. https://doi.org/10.1103/PhysRevLett.109.202501

First direct measurement of the O17(p,γ)F18 reaction cross section at Gamow energies for classical novae. / Scott, D. A.; Caciolli, A.; Di Leva, A.; Formicola, A.; Aliotta, M.; Anders, M.; Bemmerer, D.; Broggini, C.; Campeggio, M.; Corvisiero, P.; Elekes, Z.; Fülöp, Zs. S.; Gervino, G.; Guglielmetti, A.; Gustavino, C.; Gyürky, G.; Imbriani, G.; Junker, M.; Laubenstein, M.; Menegazzo, R.; Marta, M.; Napolitani, E.; Prati, P.; Rigato, V.; Roca, V.; Somorjai, E.; Salvo, C.; Straniero, O.; Strieder, F.; Szücs, T.; Terrasi, F.; Trezzi, D.

In: Physical Review Letters, Vol. 109, No. 20, 202501, 13.11.2012.

Research output: Contribution to journalArticle

Scott, DA, Caciolli, A, Di Leva, A, Formicola, A, Aliotta, M, Anders, M, Bemmerer, D, Broggini, C, Campeggio, M, Corvisiero, P, Elekes, Z, Fülöp, ZS, Gervino, G, Guglielmetti, A, Gustavino, C, Gyürky, G, Imbriani, G, Junker, M, Laubenstein, M, Menegazzo, R, Marta, M, Napolitani, E, Prati, P, Rigato, V, Roca, V, Somorjai, E, Salvo, C, Straniero, O, Strieder, F, Szücs, T, Terrasi, F & Trezzi, D 2012, 'First direct measurement of the O17(p,γ)F18 reaction cross section at Gamow energies for classical novae', Physical Review Letters, vol. 109, no. 20, 202501. https://doi.org/10.1103/PhysRevLett.109.202501
Scott, D. A. ; Caciolli, A. ; Di Leva, A. ; Formicola, A. ; Aliotta, M. ; Anders, M. ; Bemmerer, D. ; Broggini, C. ; Campeggio, M. ; Corvisiero, P. ; Elekes, Z. ; Fülöp, Zs. S. ; Gervino, G. ; Guglielmetti, A. ; Gustavino, C. ; Gyürky, G. ; Imbriani, G. ; Junker, M. ; Laubenstein, M. ; Menegazzo, R. ; Marta, M. ; Napolitani, E. ; Prati, P. ; Rigato, V. ; Roca, V. ; Somorjai, E. ; Salvo, C. ; Straniero, O. ; Strieder, F. ; Szücs, T. ; Terrasi, F. ; Trezzi, D. / First direct measurement of the O17(p,γ)F18 reaction cross section at Gamow energies for classical novae. In: Physical Review Letters. 2012 ; Vol. 109, No. 20.
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AU - Anders, M.

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AU - Salvo, C.

AU - Straniero, O.

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