Results of relativistic random-phase approximation calculations of photodetachment cross sections and angular-distribution asymmetry parameters are presented for the outer shells of the negative ions ${\mathrm{F}}^{\mathrm{-}}$, ${\mathrm{Cl}}^{\mathrm{-}}$, ${\mathrm{Br}}^{\mathrm{-}}$, and ${\mathrm{I}}^{\mathrm{-}}$ in the photon-energy region from the threshold to about 100 eV. These results are compared with available theoretical calculations and with experimental data.

• Received 15 October 1986

DOI:https://doi.org/10.1103/PhysRevA.35.2117