Photodetachment of the hydrogen negative ion in weakly coupled plasmas

The effect of weakly coupled plasmas on photodetachment cross sections of the hydrogen negative ion is investigated by using the asymptotic from of the bound state wave function and a plane wave form for the final-state wave function. The Debye model is used to represent the plasma effects. The required normalization constant is determined from highly accurate, completely nonadiabatic wave functions for the three-particle systems. Photodetachment cross sections for the plasma-embedded H− ion are calculated for different Debye lengths (D) ranging from infinite (pure Coulomb) to D=1.0.