Effect of interchannel coupling on the partial and total autoionization widths: Application to the 1s3s3p4Poand 1s3p24Pstates forZ=2–5, 10

We have computed the partial and total widths with interchannel coupling for the 1s3s3p ${}_{}{}^4{}_{}{}^{}$ ${\mathit{P}}^{\mathit{o}}$ and 1s3${\mathit{p}}^2$ ${}_{}{}^4{}_{}{}^{}$P states for Z=2–5 and 10, by solving the corresponding complex matrix equations constructed from square-integrable N-electron functions with numerical and analytic real and complex orbitals. The correlated wave functions are computed by the state-specific method. Oscillator strengths for one- and two-electron transitions from the metastable 1s2s2p ${}_{}{}^4{}_{}{}^{}$ ${\mathit{P}}^{\mathit{o}}$ state suggest that the states are reachable in ${\mathrm{He}}^{\mathrm{-}}$ and in Li directly, (1s3${\mathit{p}}^2$ ${}_{}{}^4{}_{}{}^{}$P), or via the 1s2${\mathit{p}}^2$ ${}_{}{}^4{}_{}{}^{}$P state (1s3s3p ${}_{}{}^4{}_{}{}^{}$ ${\mathit{P}}^{\mathit{o}}$). The effect of interchannel coupling on the partial widths in the case of the ${}_{}{}^4{}_{}{}^{}$ ${\mathit{P}}^{\mathit{o}}$ state is considerable. On the contrary, interchannel coupling has no significant effect on the total widths. This computational result is discussed formally.