Study of the photodetachment cross section ofF−

The photodetachment cross section of ${\mathrm{F}}^{-}$ is calculated using the method of Stieltjes imaging. This technique constructs the photodetachment cross section from the finite number of transition energies and oscillator strengths obtained in a calculation employing discrete basis functions only. The cross sections are obtained at various levels of approximation which assess the importance of the coupling between channel components and of correlation effects. These effects are not found to play an important role in the determination of absorption cross sections by the Stieltjes-imaging method for the particular case under study. The calculated cross sections agree quite well with the measured cross sections.