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Total cross-section measurements for e-—CO scattering: 80–4000 eV

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ScienceDirect - Chemical Physics Letters : Total cross-section measurements for e−—CO scattering: 80–4000 eV

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Australian National University Library Chemical Physics Letters

Volume 211, Issue 6 , 27 August 1993, Pages 529-533

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doi:10.1016/0009-2614(93)80138-F

Copyright © 1993 Published by Elsevier Science B.V. All rights reserved.

Total cross-section measurements for e

−

—CO scattering: 80–4000 eV

G. Karwasz, R. S. Brusa, A. Gasparoli and A. Zecca

Universitá di Trento, Dipartimento di Fisica, 38050 Povo (TN), Italy Received 30 May 1993. Available online 10 January 2002.

Abstract

Absolute total cross sections for electron scattering on CO molecules have been measured between 80 and 4000 eV. For N2, new measurements without thermal transpiration error allowed us to renormalize

previous data from our group. For both gases, good agreement with recent measurements and theory is observed. A semi-empirical fitting procedure allows us to reproduce the experimental data for both gases from 50 to 4000 eV. The fit permits us to extrapolate total cross sections into high energies; at this limit N2 and CO total cross sections are equal within experimental uncertainties; the difference reported by García, Campos et.al. has not been confirmed.

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