A method for solving the Lippmann-Schwinger equation. I. Single-channel case
J Mitroy; I E McCarthy; A T Stelbovics; J Mitroy; Inst. for Atomic Studies, Flinders Univ. of South Australia, Bedford Park, SA, Australia; I E McCarthy; Inst. for Atomic Studies, Flinders Univ. of South Australia, Bedford Park, SA, Australia; A T Stelbovics; Inst. for Atomic Studies, Flinders Univ. of South Australia, Bedford Park, SA, Australia
Журнал:
Journal of Physics B: Atomic and Molecular Physics
Дата:
1986-02-14
Аннотация:
A description is given of a distorted-wave method for the solution of the Lippmann-Schwinger equation for electron-atom scattering. The integral equation is solved using a complete set of states defined by the direct static potential of the atom under investigation rather than using the usual plane-wave representation. Results for the static-exchange scattering of electrons from helium and argon show significantly improved convergence over plane-wave expansion techniques and are of sufficient accuracy to indicate that the method can be generalised to efficiently solve the multichannel Lippmann-Schwinger equation.
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