100 eV asymmetric (e,2e) cross sections for the 3{sigma}{sub g} and 1 {pi}{sub u} molecular orbitals of N{sub 2}
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:394146
Triple differential cross sections for the ionization of the 3{sigma}{sub g} and 1{pi}{sub u} molecular orbitals of N{sub 2} have been measured in an asymmetric (e,2e) experiment at the 100 eV maximum of the total ionization cross section. The experiment allows the direct comparison of ionization of two molecular orbitals in the same target molecule. Scattering angles of the incident electron < 5 deg and ejected electron energies from 3 to 13 eV were used. The relative triple differential cross sections were measured in both the binary and recoil directions. The maxima of the binary and recoil peaks were found to be shifted from the angular positions predicted by first-order theory. In contrast to the typical atomic case, the recoil peaks were found to be shifted from the angular positions predicted by first-order theory. In contrast to the typical atomic case, the recoil peaks were shifted to smaller ejection angles. In addition, the binary peak for 1{pi}{sub u} orbital ionization was located at an angle 30 deg larger than the corresponding peak for the 3{sigma}{sub g} orbital. The results suggest that the experiment is very sensitive to the initial and final states of the target. Differences from the results with atomic targets may be related to the non-spherically symmetric nature of the target and residual ion. Some preliminary triple differential cross sections for O{sub 2} will also be presented.
- OSTI ID:
- 394146
- Report Number(s):
- CONF-9605105--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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