Cross sections for scattering of low- and intermediate-energy electrons from CF{sub 4}

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Bulletin of the American Physical Society

OSTI ID:131225

Dillon, M A; Kimura, M ^[1]; Boesten, L ^[2]

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1. Argonne National Lab., IL (United States)
2. Sophia Univ., Tokyo (Japan); and others

Differential cross sections (DCS) for e-CF{sub 4} collisions with incident electrons of 1.5-100 eV were recorded over an angular range of 15-130{degrees}. Relative measurements were made absolute by applying the relative flow method with He as the comparison gas. Integral and momentum transfer cross sections obtained from the DCS are compared with theoretical calculations, past experimental results, and values derived form swarm experiments. The integrated DCS show a broad structure at 7 eV of symmetry T{sub 2}, as predicted by theory, and one broad peak at 15-25 eV. Evidence of shape resonance of T{sub 2} symmetry was observed in the recorded angular distributions for vibrational modes {nu}{sub O}, {nu}{sub 1}, {nu}{sub 3}, and {nu}{sub 4}. In addition, a large cross section for {nu}{sub 3} excitation with 2-eV electrons was found to occur by a direct mechanism.

• OSTI ID: 131225
• 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

Related Subjects

66 PHYSICS
CARBON FLUORIDES
DIFFERENTIAL CROSS SECTIONS
ELECTRON-MOLECULE COLLISIONS
EV RANGE 01-10
EV RANGE 10-100
MOMENTUM TRANSFER
SCATTERING