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A method for solving the Lippmann-Schwinger equation. I. Single-channel case

J Mitroy, I E McCarthy and A T Stelbovics

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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.


PACS

34.80.Bm Elastic scattering

34.10.+x General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.)

Subjects

Atomic and molecular physics

Dates

Issue 3 (14 February 1986)



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