Nuclear Seminar

New Measurement and R-Matrix Analysis
of ¹⁵N(p,g)¹⁶O

P.J. LeBlanc
University of Notre Dame

Monday, October 26, 2009   4:00 p.m.   NSH 124
(Refreshments served prior to seminar in NSH 124)

An updated measurement of the ¹⁵N(p,g)¹⁶O capture reaction has been performed in the energy range of Ep = 130 – 1800 keV. The experiment was performed at the University of Notre Dame’s Nuclear Science Lab along with the underground LUNA facility in Gran Sasso, Italy. At such low energies, the reaction is primarily to the ground state of ¹⁶O and is dominated by two broad 1 – resonances at Ep = 340 keV and 1020 KeV; although there is a significant contribution from E1 direct capture. The measurement was made using enriched TiN targets and high purity germanium detectors set at qg = 45°. An R-Matrix analysis was performed using the code AZURE in order to extract resonance parameters and obtain extrapolations down to S(0). Scans of radii values and S(0) values were done to obtain minimum c2 values.