The width of the first excited state of ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$ has been studied through high resolution ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(p,\gamma ){}_{}{}^{13}{}_{}{}^{}\mathrm{N}$ and ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}({}_{}{}^3{}_{}{}^{}\mathrm{He},d){}_{}{}^{13}{}_{}{}^{}\mathrm{N}$ measurements. Extracted values of this quantity were found to have wide variations when the data were analyzed with different assumptions concerning backgrounds and reaction theories. A previous suggestion that existing data show statistically significant difference in this width when observed in different reactions is not supported by these studies. Width values for the second and third excited states of ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$ have also been extracted from the (${}_{}{}^3{}_{}{}^{}\mathrm{He},d$) measurements.

NUCLEAR REACTIONS ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(p,\gamma )$, $E_p=600\mathrm{}$ keV, thick target; measured yield $E_{\gamma }$. ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$, deduced ${\Gamma }_1$. ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}({}_{}{}^3{}_{}{}^{}\mathrm{He},d)$, $E_{{}_{}{}^3{}_{}{}^{}\mathrm{He}}=12\mathrm{}-15$ MeV; measured yield $E_d$. ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$, deduced ${\Gamma }_{1,2,3}$. Alternative analyses compared.

• Received 26 December 1973

DOI:https://doi.org/10.1103/PhysRevC.10.1319