The K-LM and K-MM radiative Auger (RA) x-ray spectra of Kr and Xe were measured. The transitions were photoinduced by an x-ray tube and measured with a high-resolution transmission curved-crystal spectrometer. For Kr the K-LM and K-MM RA yields, relative to the K${\mathrm{\ensuremath{\alpha}}}_{1,2}$ and K${\mathrm{\ensuremath{\beta}}}_{1,3}$ lines, were found to be 0.15%\ifmmode\pm\else\textpm\fi{}0.04% and 0.77%\ifmmode\pm\else\textpm\fi{}0.2%, respectively. For Xe, only an upper limit of 0.008% relative to the K${\mathrm{\ensuremath{\alpha}}}_{1,2}$ line could be deduced for the K-LM RA yield, whereas the total relative intensity of the unresolved K-${\mathit{M}}_{4,5}$${\mathit{M}}_{4,5}$ and K-${\mathit{M}}_{1}$${\mathit{N}}_{1}$ RA transitions was found to be 0.06%\ifmmode\pm\else\textpm\fi{}0.02% relative to the K${\mathrm{\ensuremath{\beta}}}_{1,3}$ line. In addition, the Xe K-${\mathit{M}}_{2,3}$${\mathit{N}}_{1}$, K-${\mathit{M}}_{1}$${\mathit{N}}_{4,5}$, and K-${\mathit{M}}_{1}$${\mathit{N}}_{2,3}$ RA transitions of Xe were also observed with a total relative intensity of 0.05%\ifmmode\pm\else\textpm\fi{}0.02%. \textcopyright{} 1996 The American Physical Society.