Journal article
Test of a q-fractional V(N-q) Hartree-Fock potential for the calculation of double photoionization cross sections of neon
Publication Details
Authors: | Kilin, V.; Lazarev, D.; Lazarev, D.; Zelichenko, V.; Amusia, M.; Schartner, K.; Ehresmann, A.; Schmoranzer, H. |
Publication year: | 2001 |
Journal: | Journal of Physics B: Atomic, Molecular and Optical Physics |
Pages range : | 3993-4001 |
Volume number: | 34 |
ISSN: | 0953-4075 |
Abstract
The approach of a parametric V(N-q) Hartree-Fock potential with fractional q is developed and applied for the first time for the calculation of the double photoionization cross sections of Ne. A minimum of the squared difference between the length-form and velocity-form cross sections is used as a criterion for calculating the values of q. It is found that the minimization procedure leads to a practically exact equality of the length-form and velocity-form cross sections for the Ne III 2s22p4[3P,1D,1S], 2s12p5[3P,1P] and 2s02p6[1S] states in the exciting-photon energy region from the double-ionization threshold up to 325eV, if q is considered as a function of the exciting-photon energy. The calculated V(N-q) cross sections are in better agreement with the experimental data than those for the V(N-1) and V(N-2) potentials.
The approach of a parametric V(N-q) Hartree-Fock potential with fractional q is developed and applied for the first time for the calculation of the double photoionization cross sections of Ne. A minimum of the squared difference between the length-form and velocity-form cross sections is used as a criterion for calculating the values of q. It is found that the minimization procedure leads to a practically exact equality of the length-form and velocity-form cross sections for the Ne III 2s22p4[3P,1D,1S], 2s12p5[3P,1P] and 2s02p6[1S] states in the exciting-photon energy region from the double-ionization threshold up to 325eV, if q is considered as a function of the exciting-photon energy. The calculated V(N-q) cross sections are in better agreement with the experimental data than those for the V(N-1) and V(N-2) potentials.
