Abbreviated Journal Title
Phys. Rev. A
Optics; Physics; Atomic; Molecular & Chemical
The numerical multiconfiguration Hartree-Fock method is used to calculate the photoionization cross section for the Cs 7d excited state. The electron correlation and the dynamical core-polarization effects, which are very important for photoionization-cross-section calculations of the cesium atom, have been taken into account in an ab initio manner through the configuration-interaction procedure. A minimum has been found in the total photoionization cross section. The calculation of the photoionization angular-distribution asymmetry parameter is proved to be an excellent test to determine the existence and location of the minimum in the cross section. The length and velocity forms of the cross section and the asymmetry parameter are found to be in excellent agreement over the entire incident photon energy range considered, suggesting that converged results may be obtained in this interval with the present approach. The results obtained are compared with the recent experimental measurements of the absolute photoionization cross section and are found to be in good agreement.
Physical Review A
Saha, H. P., "Multiconfiguration Hartree-Fock Calculation Of The Photoionization Of The Cs 7D Excited-State" (1990). Faculty Bibliography 1990s. 138.