Electron impact ionization of heavy ions: some surprises
This paper reports the results of calculations of electron impact ionization cross sections for a variety of heavy ions using a distorted wave Born-exchange approximation. The target is described by a Hartree-Fock wavefunction. The scattering matrix element is represented by a triple partial wave expansion over incident, scattered, and ejected (originally bound) continuum states. These partial waves are computed in the potentials associated with the initial target (incident and scattered waves) and the residual ion (ejected waves). A Gauss integration was performed over the distribution of energy between the two final state continuum electrons. For ionization of closed d- and f-subshells, the ejected f-waves were computed in frozen-core term-dependent Hartree-Fock potentials, which include the strong repulsive contribution in singlet terms which arises from the interaction of an excited orbital with an almost closed shell. Ground state correlation was included in some calculations of ionization of d/sup 10/ subshells.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA). A Div.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5412924
- Report Number(s):
- UCRL-95110; CONF-8608108-2; ON: DE86015157
- Resource Relation:
- Conference: International seminar on dynamic processes of highly charged ions, Susono, Shizuoka-ken, Japan, 21 Aug 1986
- Country of Publication:
- United States
- Language:
- English
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