Hartree-Fock results for electron impact ionization of H atoms

    Authors

    H. P. Saha

    Comments

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    Abbreviated Journal Title

    J. Phys. B-At. Mol. Opt. Phys.

    Keywords

    DIFFERENTIAL CROSS-SECTIONS; HYDROGEN-ATOMS; ANGULAR-DISTRIBUTIONS; THRESHOLD; SCATTERING; HELIUM; Optics; Physics, Atomic, Molecular & Chemical

    Abstract

    The multiconfiguration Hartree - Fock method for bound and continuum wavefunctions has been extended to investigate electron impact ionization of atoms. As a test case, the method is applied to calculate triple differential cross sections for electron impact ionization of H atom at an excess energy of 4 eV for the coplanar theta(12) = pi geometry. The results are obtained for both equal and unequal energies of the two outgoing electrons in the Hartree - Fock ( HF) and screening potential ( SP) approximations in order to determine the importance of electron correlation between the two outgoing electrons in the present configuration. At equal energies, both the HF and SP results are found to be very close to each other and are in very good agreement with the relative experimental measurements and other accurate theoretical calculations. At unequal energies, both calculated results also compare well with the relative experimental data over all ranges of theta(1) considered by experiment.

    Journal Title

    Journal of Physics B-Atomic Molecular and Optical Physics

    Volume

    41

    Issue/Number

    5

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    5

    WOS Identifier

    WOS:000253547700010

    ISSN

    0953-4075

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