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Iterative approach to the Schwinger variational principle for electron-molecule collisions

Lucchese, Robert R. and Watson, Deborah K. and McKoy, Vincent (1980) Iterative approach to the Schwinger variational principle for electron-molecule collisions. Physical Review A, 22 (2). pp. 421-426. ISSN 0556-2791. doi:10.1103/PhysRevA.22.421.

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We present an iterative approach which uses the Schwinger variational principle to solve the Lippmann-Schwinger equation for electron-molecule scattering. This method combines the use of discrete basis functions to describe the effects of the noncentral molecular potential with an iterative procedure which provides systematic convergence of the scattering solutions. Results for electron-H2 scattering in the static-exchange approximation show that the method converges rapidly and gives very accurate results.

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Additional Information:©1980 The American Physical Society Received 17 December 1979 This work was supported by the National Science Foundation under Grant No. CHE76-05157. We would like to thank Dr. Derek Robb for many helpful discussions and for providing us with results prior to publication. One of us (R.L.L.) acknowledges the support of a National Science Foundation Predoctoral Fellowship.
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Deposited On:20 Dec 2006
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