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|Type:||Artigo de periódico|
|Title:||Experimental And Theoretical Elastic Cross Sections For Electron Collisions With The C 3 H 6 Isomers|
|Abstract:||In the present work we report cross sections for electron collisions with the isomers propene (C3 H6) and cyclopropane (c- C3 H6). Electron-scattering differential cross sections (DCS) are reported for measurements carried out for energies 1.5-100 eV and the angular range of 20°-120°. Elastic integral cross sections (ECS), DCS, and momentum-transfer cross sections (MTCS) are reported for calculations carried out using the Schwinger multichannel method with pseudopotentials for the energy range of 2.0-40 eV and angular range of 0°-180°. The resemblance of the π* shape resonance in the cross sections, observed at 1.5-2.0 eV for propene, to those in C2 H4 and C2 F4 clearly points to the effect of the double bond in the molecular structures for these molecules. Below 60 eV, we observed clear differences in peak positions and magnitudes between the DCS, ECS, and MTCS for C3 H6 and c- C3 H6, which we view as the isomer effect. © 2006 American Institute of Physics.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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