Abstract
The radiative widths of two $^{16}\mathrm{O}$ levels were determined using photon scattering and self-absorption measurements. The results were ${\ensuremath{\Gamma}}_{0}$(6.917)=0.094\ifmmode\pm\else\textpm\fi{}0.004 eV and ${\ensuremath{\Gamma}}_{0}$(7.117)=0.054\ifmmode\pm\else\textpm\fi{}0.004 eV. The effective temperature ${T}_{e}$ of the O atom in a water target is calculated by accounting for the effect of the zero-point molecular vibrations of the atom. The influence of this new value of ${T}_{e}$ on the Doppler broadening of the nuclear level and hence on the resulting value of ${\ensuremath{\Gamma}}_{0}$ as deduced from a self-absorption measurement is discussed.
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