New absolute cross section measurements of the F-19(p, alpha(0))O-16 and F-19(p, alpha(pi))O-16* reactions at energies close to the Coulomb barrier are reported. The availability of high-resolution and low-noise energy spectra obtained in the experiment allowed to resolve the 6.05-6.13 MeV doublet in O-16. In particular, the alpha(pi) channel cross section was measured in the poorly-known 1.3 MeV bombarding energy region, and the alpha(0) channel was investigated in the 1.6 MeV region, where a strong discrepancy between previous data-sets is present. A comprehensive R-matrix fit, including the new data, was performed and the structure of the states ranging in the 14-15 MeV region is discussed.
New measurements of the 19F(p, α 0)16O and 19F(p, α π )16O* reaction cross sections close to the Coulomb barrier
L Redigolo;I Lombardo;D Dell'Aquila;A Musumarra;M Russo;G Verde;
2024-01-01
Abstract
New absolute cross section measurements of the F-19(p, alpha(0))O-16 and F-19(p, alpha(pi))O-16* reactions at energies close to the Coulomb barrier are reported. The availability of high-resolution and low-noise energy spectra obtained in the experiment allowed to resolve the 6.05-6.13 MeV doublet in O-16. In particular, the alpha(pi) channel cross section was measured in the poorly-known 1.3 MeV bombarding energy region, and the alpha(0) channel was investigated in the 1.6 MeV region, where a strong discrepancy between previous data-sets is present. A comprehensive R-matrix fit, including the new data, was performed and the structure of the states ranging in the 14-15 MeV region is discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
