Differential and integral cross sections for elastic scattering of low-energy electrons by O2
| Autor: | Philip G. Burke, G Woste, P J O Teubner, K Higgins, C.J. Noble, A G Middleton, Michael J. Brunger |
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| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Journal of Physics B: Atomic, Molecular and Optical Physics. 28:4141-4148 |
| ISSN: | 1361-6455 0953-4075 |
| DOI: | 10.1088/0953-4075/28/18/016 |
| Popis: | Differential and integral cross sections for the elastic scattering of electrons by unoriented oxygen molecules have been calculated and measured for selected impact energies in the range from 5 to 20 eV. The present theoretical results were obtained using the R-matrix method. The calculations have been carried out using a model with nine electronic target states and configuration-interaction representations of the target wavefunctions. Ten scattering symmetries with a fixed internuclear separation of R=2.3 a0 and the vibrational averaged resonance symmetries 2 Pi u and 4 Sigma u- have been used for calculating the cross sections. The current experimental data were derived using standard crossed-beam techniques. Both the calculation and measurements were conducted to provide further insight into the worrying discrepancies between the differential cross sections of various experimental groups for low-energy elastic electron scattering from O2, as were recently highlighted in the literature. |
| Databáze: | OpenAIRE |
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