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Screening corrections for calculation of electron scattering differential cross sections from polyatomic molecules

AuthorsBlanco, F.; García, Gustavo
KeywordsElectron scattering
Optical potential
Screening corrections
Additivity rule
Differential cross sections
[PACS] Calculations and mathematical techniques in atomic and molecular physics (excluding electron correlation calculations)
[PACS] Ab initio calculations
[PACS] General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.)
[PACS] Electron scattering
Issue Date29-Jul-2004
CitationPhysics Letters A 330(3-4): 230-237 (2004)
AbstractAn ab initio approximate procedure is obtained for the screening correction of molecular differential cross sections calculated in the independent atom approximation. Proposed corrections arise from a semiclassical analysis of atomic geometrical overlapping as seen by the incident electrons. The resulting treatment is very simple and its application to CO2, CF4 and C3F8 sample molecules reveals significant improvements in the 10–200 eV incident energy region.
Description8 pages, 5 figures.-- PACS nrs.: 31.15.-p; 31.15.Ar; 34.10.+x; 34.80.-i.-- Printed version published Sep 20, 2004.
Publisher version (URL)http://dx.doi.org/10.1016/j.physleta.2004.07.027
Appears in Collections:(CFMAC-IFF) Artículos
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