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|Type:||Artigo de periódico|
|Title:||Cross-sections for rotational excitations of C3H4 isomers by electron impact|
|Abstract:||We report elastic (rotationally summed) and rotationally resolved cross-sections for scattering of low-energy electrons by the C3H4 isomers allene, propyne, and cyclopropene, which belong to the D-2d, C-3v and C-2v groups respectively. We employed the Schwinger multichannel method with pseudopotentials at the static-exchange approximation, combined with the adiabatic-nuclei-rotation (ANR) approximation to calculate the rotational excitation cross-sections for energies ranging from 5 to 30 eV. Our rotational resolved cross-sections show the isomer effect more strongly related to scattering potentials of different molecular geometries and to transition selection rules than to differences in mass distribution which account for the energy spacing in the rotational spectra of the molecules.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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