Phys. Rev. A 37, 3749–3754 (1988)Complex Kohn variational method: Application to low-energy electron-molecule collisionsReceived 5 November 1987; published in the issue dated May 1988 An algebraic variational method, based on application of the Kohn principle to the T matrix, is formulated for multichannel scattering problems and applied to the case of low-energy electron-molecule collisions. The method requires only Hamiltonian matrix elements and is anomaly-free. The present formulation is noteworthy in that it requires no bound-free nor free-free exchange matrix elements. The new technique is illustrated by application to e-+H2 scattering in both the static-exchange and the two-state approximations. The method is found to be both efficient and accurate. © 1988 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.37.3749
DOI:
10.1103/PhysRevA.37.3749
PACS:
34.80.Bm, 34.80.Gs, 03.65.Nk
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