Auger and radiative deexcitation ofP4+ions

X-ray wavelengths, Auger energies, and decay rates have been calculated for various states of the ${\mathrm{P}}^{4+}$ ion, with configurations $\left(1\mathrm{}{s}^{2}2s^{2}2p^5\right)3s3p,3s3d,3p3d,3s^2,3\mathrm{}{p}^2$, and $3d^2$. Intermediate coupling and configuration interaction have been taken into account. The energies and decay rates are found to be strongly affected by configuration interaction. The theoretical results are compared with recent observations in ion-atom collision experiments. Good agreement with measured spectra is found, and the calculations characterize a number of lines that had not previously been identified.