Differential cross sections for rovibrational (v{sup {prime}}=0{r_arrow}1,2,3,4) excitation of the electronic ground state of O{sub 2} by electron impact

Journal Article · Thu Jan 01 04:00:00 EST 1998 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.57.208· OSTI ID:573782

Brunger, M J; Middleton, A G; Teubner, P J ^[1]

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1. Department of Physics, The Flinders University of South Australia, G.P.O. Box 2100, Adelaide, South Australia 5001 (Australia)

We have measured absolute differential cross sections (DCSs) for rovibrational excitation (0{r_arrow}1,2,3,4) of the {chi}{sup 3}{Sigma}{sub g}{sup {minus}} electronic ground state of O{sub 2}. The scattered electron angular range was 10{degree}{endash}90{degree}, while the cross sections were measured at ten specific energies in the 5{endash}20 eV incident beam energy range. This energy regime encompasses the region where the {sup 4}{Sigma}{sub u}{sup {minus}} and {sup 2}{Sigma}{sub u}{sup {minus}} resonances of O{sub 2}{sup {minus}} are known to significantly enhance the vibrational excitation process. The present data are found to be in generally good agreement with the more limited recent measurements of Allan [J. Phys. B {bold 28}, 5163 (1995)] and the earlier results of Wong {ital et al.} [Phys. Rev. Lett. {bold 31}, 969 (1973)]. Agreement with the data of Shyn and Sweeney [Phys. Rev. A {bold 48}, 1214 (1993)], however, was found to be only fair. Comparison of the present DCS with an available Born-closure Schwinger variational method calculation result is also made. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 573782
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 57; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
ELECTRON-MOLECULE COLLISIONS
EXCITATION
GROUND STATES
OXYGEN
ROTATIONAL STATES
VARIATIONAL METHODS
VIBRATIONAL STATES