Theoretical study of the photoionization of the excited 1s22s2p Po1,3 states of the Be -like B+ ion

Photoionization of the first excited $p$ states of the $\mathrm{Be}$-like ${\mathrm{B}}^{+}$ ion, which interact with the even-parity continua, has been studied theoretically. The calculated photoionization cross sections contain a number of autoionizing Rydberg series of resonances converging to the ${\mathrm{B}}^{2+}$ $2p$, $3s$, $3p$, and $3d$ states. Lower members of the Rydberg series of resonances with $n\ensuremath{\leqslant}12$ are identified and resonance positions ${E}_{r}$, effective quantum numbers ${n}^{*}$, and widths $\ensuremath{\Gamma}$ are presented. Excellent agreement between length- and velocity-gauge results is found, along with overall good agreement with previous work.