The terminating of doubly excited 1,3Po resonances in H- below the n=2 H threshold

We examine the possibility of the resonances of an H- P-1,3(o) dipole series being formed below the n = 2 hydrogen threshold. Including the relativistic and QED corrections as first-order perturbations, the series will be terminated after the third resonance for P-1(o) symmetry and the fourth resonance for P-3(o) symmetry. The total angular momentum, J, is shown to be 0 for the fourth resonance of a P-3(o) series. This figure is in disagreement with that of Purr and Friedrich. The present resonant energies and widths were calculated by the saddle-point complex rotation method with B-spline functions.