Electron scattering from C{sub 2}H{sub 2} molecules in the energy range of 0.01-20 eV
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:127948
- FAMU, Tallahassee, FL (United States)
The results for vibrationally and electronically elastic scattering of low-energy electrons with C{sub 2}H{sub 2} molecules are presented by employing the close-coupling method under the fixed-nuclei approximation. The full e{sup {minus}}-C{sub 2}H{sub 2} interaction is approximated parameter-free as a sum of static, polarization and exchange potentials. The final cross sections (differential, total and momentum transfer) are characterised by a minimum (around 0.2 eV), a maximum (around 2 eV, the well known {Pi}{sub g} shape resonance due to d-wave tunneling effect) and a broad hump around 10 eV. All these features agree well with measurements. The scattering length for the e{sup {minus}}-C{sub 2}H{sub 2} system is found to be -3.9 au. Details of Differential, integral and momentum transfer cross sections for rotationally elastic, inelastic and summed processes in the energy range of 0.01-20 eV will be reported.
- OSTI ID:
- 127948
- Report Number(s):
- CONF-920376--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 37; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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