Target and detection techniques for the 13N(p, gamma )14O reaction using radioactive ion beams: 13C(p, gamma )14N reaction as a test case.

Abstract

A feasibility study was undertaken for the measurement of the resonance at ${\mathit{E}}_{\mathit{r}}$=545 keV in the $^{13}\mathrm{N}$(p,\ensuremath{\gamma}${)}^{14}$O reaction, using intense radioactive ion beams. The analog resonance at ${\mathit{E}}_{\mathit{r}}$=512 keV in $^{12}\mathrm{C}$(p,\ensuremath{\gamma}${)}^{14}$N was chosen as a test case, leading to improved knowledge of the resonance parameters. Thin- and thick-target yields were obtained with $^{13}\mathrm{C}$ beams on an extended gas target and a polyethylene foil, respectively. In addition, thin and thick targets of enriched $^{13}\mathrm{C}$ were irradiated with proton beams. Normalization problems arising with mixed ion beams ${(}^{13}$N${/}^{13}$C) are discussed.