Widths ofS2,2Po, andD2resonances in Li i, Be ii, and B iii

The autoionization widths of the lower ${}_{}{}^2{}_{}{}^{}\mathrm{S}$, ${}^2$ $P^o$, and ${}_{}{}^2{}_{}{}^{}\mathrm{D}$ Feshbach resonances in Li i, Be ii, and B iii are calculated with the saddle-point complex-rotation method. For Be ii and B iii the radiation widths are also computed. Relativistic and mass polarization corrections to the resonance energy are included. The width results for the [1s(2s2p)${}^3$P]${}^2$ $P^o$ and (1s2p2p)${}^2$D states are compared with other theoretical results and with the recently published experimental results for Li i and Be i i. Transition wavelengths involving these autoionizing states are also calculated and compared with theory and experiment. Due to the substantial difference between theory and experiment on the Li[1s(2s2p)${}^3$P]${}^2$ $P^o$ width, a detailed study is made on the convergence of this width with respect to the closed channel, open-channel target state and out-going electron wave function to access the stability and reliability of the theoretical result.