Non Franck-Condon effects in the molecular electronic excitation of O{sub 2} and CO

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

OSTI ID:131213

Dillon, M; Spence, D; Kimura, M ^[1]

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1. Argonne National Lab., Chicago, IL (United States); and others

Franck-Condon envelopes in electron energy loss spectra recorded for the X{sup 1}{Sigma}{sup +} {yields} B{sup 1}{Sigma}{sup +} and X{sup +}{Sigma}{sub g}{sup {minus}}{yields}B{sup {prime}}{sup 3}{Sigma}{sub u}{sup {minus}} transitions in CO and O2 show a pronounced variation with scattering angle. This behavior is in sharp contrast with the results standard formulations confirmed by all previous studies of electron impact and optically induced molecular excitation. Underlying mechanisms revealed by a theoretical investigation employing multi reference configuration interaction suggest that such phenomena may be much more general than previously assumed.

• OSTI ID: 131213
• 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 MONOXIDE
COULOMB EXCITATION
ELECTRON-MOLECULE COLLISIONS
EXCITED STATES
OXYGEN
SCATTERING