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Studies of Elastic and Electronically Inelastic Electron-Molecule Collisions

Lima, Marco A. P. and Gibson, Thomas L. and Brescansin, Luiz M. and McKoy, Vincent and Huo, Winifred M. (1986) Studies of Elastic and Electronically Inelastic Electron-Molecule Collisions. In: Swarm Studies and Inelastic Electron-Molecule Collisions. Springer New York , New York, NY, pp. 239-264. ISBN 978-1-4612-9104-6.

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Cross-sections for the scattering of low-energy electrons by molecules play an important role in the modeling of swarm and plasma etching systems, gas lasers, and planetary atmospheres. In contrast to the related atomic problem, the progress to date in both theoretical and experimental studies of electron-molecule scattering cross-sections has been limited [1]. On the theoretical side, this situation is primarily due to the additional complexities arising from the nonspherical potential fields of molecular targets. Most studies of electronic excitation of molecules by low-energy electrons have hence been carried out using low-order theories. These include plane-wave theories such as the Born Ochkur-Rudge approximations [2, 3], the impact-parameter method [4], and distorted-wave theories [5, 6]. Several studies of elastic scattering by molecules have also used local approximations to the nonlocal exchange potentials [7]. Although such theories and approximations can be computationally easy to apply, they do not contain enough of the collision physics to yield consistently reliable differential and integral cross sections, particularly at low and intermediate energies [8]. What is clearly needed are theoretical methods which can provide quantitatively reliable cross-sections for the elastic and inelastic scattering of low-energy electrons by molecules.

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Additional Information:© 1985 Springer. This material is based upon research supported by the National Science Foundation under Grant No. PHY-8213992 and by the NASA-Ames Cooperative Agreement No. NCC2-319. One of us (M.A.P.L.) acknowledges financial support from the Comissão Nacional de Energia Nuclear (CNEN), Rio de Janeiro, Brazil. Another (L.M.B.) acknowledges a fellowship from Conselho Nacional de Desenvolvimento Cientifico e Tecnolόgico (CNPq), Brazil. Two of us (M.A.P.L. and L.M.B.) acknowledge financial support from the Fundação de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil. The research of W.M.H. is supported by the National Aeronautics and Space Administration NASA-Ames Cooperative Agreement No. NCC2-147.
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Comissão Nacional de Energia Nuclear (CNEN)UNSPECIFIED
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Fundação de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)UNSPECIFIED
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ID Code:62296
Deposited By: Ruth Sustaita
Deposited On:23 Nov 2015 19:31
Last Modified:10 Nov 2021 23:00

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