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Type: Artigo de periódico
Title: Low-energy electron collisions with ethane
Author: Bettega, MHF
da Costa, RF
Lima, MAP
Abstract: We employed the Schwinger multichannel method to compute elastic cross sections for low-energy electron collisions with ethane (C(2)H(6)). The calculations were carried out in the static-exchange and static-exchange plus polarization approximations for energies up to 12 eV. Our integral cross section shows good agreement with experimental data and with theoretical results for energies above 5 eV. There are some differences for energies below 5 eV between our results and the available experimental and theoretical results. Our differential cross sections also agree well with the experiment and with theory for energies above 5 eV; below this energy our results agree in shape, but are smaller than the available experimental and theoretical results. We discuss possible reasons for these discrepancies. We found a broad structure in the integral cross section around 8.5 eV and also a Ramsauer-Townsend minimum around 0.2 eV. These results are in agreement with the experimental observations and theoretical results.
Subject: Elastic scattering
Polarization effects
Ramsauer-Townsend minimum
Country: Brasil
Editor: Soc Brasileira Fisica
Rights: fechado
Date Issue: 2009
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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