Low-energy electron scattering by CH_3F, CH_2F_2, CHF_3, and CF_4

Creators: Varella, Márcio T. do N.; Winstead, Carl; McKoy, Vincent; Kitajima, Masashi; Tanaka, Hiroshi

Abstract

We present measured and calculated differential cross sections, as well as calculated integral cross sections, for elastic electron collisions with CH_3F, CH_2F_2, CHF_3, and CF_4. The calculated cross sections were obtained with the Schwinger multichannel method, and a Born-closure procedure was used to improve the differential cross sections for polar systems. Polarization effects were found to be relevant even for systems with moderately large permanent dipole moments, such as CH_3F and CHF_3. In general, there is good agreement between theory and experiment.

Additional Information

© 2002 American Physical Society. (Received 22 January 2001; published 4 January 2002) M.T.N.V. acknowledges support from Brazilian agency Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP). C.W. and V.M. acknowledge support from the Department of Energy, Office of Energy Research. The authors acknowledge use of the facilities of the Center for Advanced Computing Research (CACR) at the California Institute of Technology, and the valuable assistance of the CACR staff, in particular, Heidi Lorenz-Wirzba. CACR is supported in part by the National Science Foundation through NPACI. M.T.N.V. would like to express his gratitude to Professor V. McKoy, Dr. C. Winstead, and Dr. K. Wang for their hospitality and friendship during his visit to the California Institute of Technology.

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Published - PhysRevA.65.022702.pdf

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