The N14(p,γ)O15 reaction studied with a composite germanium detector

M. Marta, A. Formicola, D. Bemmerer, C. Broggini, A. Caciolli, P. Corvisiero, H. Costantini, Z. Elekes, Zs. S. Fülöp, G. Gervino, A. Guglielmetti, C. Gustavino, G. Gyürky, G. Imbriani, M. Junker, A. Lemut, B. Limata, C. Mazzocchi, R. Menegazzo, P. PratiV. Roca, C. Rolfs, C. Rossi Alvarez, E. Somorjai, O. Straniero, F. Strieder, F. Terrasi, H. P. Trautvetter, A. Vomiero

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The rate of the carbon-nitrogen-oxygen (CNO) cycle of hydrogen burning is controlled by the N14(p,γ)O15 reaction. The reaction proceeds by capture to the ground states and several excited states in O15. In order to obtain a reliable extrapolation of the excitation curve to astrophysical energy, fits in the R-matrix framework are needed. In an energy range that sensitively tests such fits, new cross-section data are reported here for the four major transitions in the N14(p,γ)O15 reaction. The experiment has been performed at the Laboratory for Underground Nuclear Astrophysics (LUNA) 400-kV accelerator placed deep underground in the Gran Sasso facility in Italy. Using a composite germanium detector, summing corrections have been considerably reduced with respect to previous studies. The cross sections for capture to the ground state and to the 5181, 6172, and 6792 keV excited states in O15 have been determined at 359, 380, and 399 keV beam energy. In addition, the branching ratios for the decay of the 278-keV resonance have been remeasured.

Original languageEnglish
Article number045804
JournalPhysical Review C - Nuclear Physics
Volume83
Issue number4
DOIs
Publication statusPublished - Apr 19 2011

Fingerprint

germanium
composite materials
detectors
excitation
nuclear astrophysics
ground state
cross sections
Italy
energy
extrapolation
astrophysics
accelerators
nitrogen
cycles
carbon
decay
oxygen
curves
hydrogen

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Marta, M., Formicola, A., Bemmerer, D., Broggini, C., Caciolli, A., Corvisiero, P., ... Vomiero, A. (2011). The N14(p,γ)O15 reaction studied with a composite germanium detector. Physical Review C - Nuclear Physics, 83(4), [045804]. https://doi.org/10.1103/PhysRevC.83.045804

The N14(p,γ)O15 reaction studied with a composite germanium detector. / Marta, M.; Formicola, A.; Bemmerer, D.; Broggini, C.; Caciolli, A.; Corvisiero, P.; Costantini, H.; Elekes, Z.; Fülöp, Zs. S.; Gervino, G.; Guglielmetti, A.; Gustavino, C.; Gyürky, G.; Imbriani, G.; Junker, M.; Lemut, A.; Limata, B.; Mazzocchi, C.; Menegazzo, R.; Prati, P.; Roca, V.; Rolfs, C.; Rossi Alvarez, C.; Somorjai, E.; Straniero, O.; Strieder, F.; Terrasi, F.; Trautvetter, H. P.; Vomiero, A.

In: Physical Review C - Nuclear Physics, Vol. 83, No. 4, 045804, 19.04.2011.

Research output: Contribution to journalArticle

Marta, M, Formicola, A, Bemmerer, D, Broggini, C, Caciolli, A, Corvisiero, P, Costantini, H, Elekes, Z, Fülöp, ZS, Gervino, G, Guglielmetti, A, Gustavino, C, Gyürky, G, Imbriani, G, Junker, M, Lemut, A, Limata, B, Mazzocchi, C, Menegazzo, R, Prati, P, Roca, V, Rolfs, C, Rossi Alvarez, C, Somorjai, E, Straniero, O, Strieder, F, Terrasi, F, Trautvetter, HP & Vomiero, A 2011, 'The N14(p,γ)O15 reaction studied with a composite germanium detector', Physical Review C - Nuclear Physics, vol. 83, no. 4, 045804. https://doi.org/10.1103/PhysRevC.83.045804
Marta M, Formicola A, Bemmerer D, Broggini C, Caciolli A, Corvisiero P et al. The N14(p,γ)O15 reaction studied with a composite germanium detector. Physical Review C - Nuclear Physics. 2011 Apr 19;83(4). 045804. https://doi.org/10.1103/PhysRevC.83.045804
Marta, M. ; Formicola, A. ; Bemmerer, D. ; Broggini, C. ; Caciolli, A. ; Corvisiero, P. ; Costantini, H. ; Elekes, Z. ; Fülöp, Zs. S. ; Gervino, G. ; Guglielmetti, A. ; Gustavino, C. ; Gyürky, G. ; Imbriani, G. ; Junker, M. ; Lemut, A. ; Limata, B. ; Mazzocchi, C. ; Menegazzo, R. ; Prati, P. ; Roca, V. ; Rolfs, C. ; Rossi Alvarez, C. ; Somorjai, E. ; Straniero, O. ; Strieder, F. ; Terrasi, F. ; Trautvetter, H. P. ; Vomiero, A. / The N14(p,γ)O15 reaction studied with a composite germanium detector. In: Physical Review C - Nuclear Physics. 2011 ; Vol. 83, No. 4.
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