Parameters of the 9.17 MeV level inN14

Mutually consistent measurements of elastic proton scattering and resonance absorption show that the width of the 9.17 MeV level in $^{14}\mathrm{N}$ ($\ensuremath{\Gamma}=135\ifmmode\pm\else\textpm\fi{}8$ eV) is almost twice as large as the accepted literature value. The positive parity is unambiguously confirmed. The excitation energy is determined to be 9172.5\ifmmode\pm\else\textpm\fi{}0.3 keV, based upon a cascade-crossover technique with a $^{56}\mathrm{Co}$ source for calibration. The expected azimuthal asymmetry of the resonance fluorescence of the plane-polarized photons at this resonance is demonstrated quantitatively.