Direct measurement of the N-15(p,gamma)O-16 total cross section at novae energies

作者：Bemmerer D^*; Caciolli A; Bonetti R; Broggini C; Confortola F; Corvisiero P; Costantini H; Elekes Z; Formicola A; Fulop Zs; Gervino G; Guglielmetti A; Gustavino C; Gyurky Gy; Junker M; Limata B; Marta M; Menegazzo R; Prati P; Roca V; Rolfs C; Alvarez C Rossi; Somorjai E; Straniero O

来源：Journal of Physics G: Nuclear and Particle Physics , 2009, 36(4): 045202.

DOI：10.1088/0954-3899/36/4/045202

The N-15(p,gamma)O-16 reaction controls the passage of nucleosynthetic material from the first to the second carbon-nitrogen-oxygen (CNO) cycle. A direct measurement of the total N-15(p,gamma)O-16 cross section at energies corresponding to hydrogen burning in novae is presented here. Data have been taken at 90-230 keV center-of-mass energy using a windowless gas target filled with nitrogen of natural isotopic composition and a bismuth germanate summing detector. The cross section is found to be a factor 2 lower than previously believed.

• 出版日期2009-4