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Title

A comprehensive and comparative study of elastic electron scattering from OCS and CS2 in the energy region from 1.2 to 200 eV

AuthorsMurai, H.; Ishijima, Y.; Mitsumura, T.; Sakamoto, Y.; Kato, H.; Hoshino, M.; Blanco, F.; García, Gustavo CSIC ORCID; Limão-Vieira, P.; Brunger, M.J.; Buckman, S.J.; Tanaka, H.
Issue Date2013
PublisherAmerican Institute of Physics
CitationJournal of Chemical Physics 138: 054302 (2013)
AbstractWe report absolute differential cross sections (DCSs) for elastic electron scattering from OCS (carbonyl sulphide) and CS2 (carbon disulphide) in the impact energy range of 1.2-200 eV and for scattering angles from 10° to 150°. Above 10 eV, the angular distributions are found to agree quite well with our present calculations using two semi-phenomenological theoretical approaches. One employs the independent-atom model with the screening-corrected additivity rule (IAM-SCAR), while the other uses the continuum-multiple- scattering method in conjunction with a parameter-free exchange-polarization approximation. Since OCS is a polar molecule, further dipole-induced rotational excitation cross sections have been calculated in the framework of the first Born approximation and incoherently added to the IAM-SCAR results. In comparison with the calculated DCS for the S atom, atomic-like behavior for the angular distributions in both the OCS and CS2 scattering systems is observed. Integrated elastic cross sections are obtained by extrapolating the experimental measurements, with the aid of the theoretical calculations, for those scattering angles below 10° and above 150°. These values are then compared with the available total cross sections. © 2013 American Institute of Physics.
URIhttp://hdl.handle.net/10261/79387
DOI10.1063/1.4788666
Identifiersdoi: 10.1063/1.4788666
issn: 0021-9606
Appears in Collections:(CFMAC-IFF) Artículos




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