Is CO Carbon KVV Auger Electron Emission Affected by the Photoelectron?

Journal Article · Thu Dec 04 23:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.233202· OSTI ID:21179962

Pruemper, G; Fukuzawa, H; Sakai, K; Ueda, K ^[1]; Rolles, D ^[2]; Prince, K C ^[1]; Harries, J R ^[3]; Tamenori, Y ^[4]; Berrah, N ^[2]

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1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)
2. Physics Department, Western Michigan University, Kalamazoo, Michigan 49008 (United States)
3. Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Hyogo 679-5148 (Japan)
4. Japan Synchrotron Radiation Research Institute, Sayo-gun, Hyogo 679-5198 (Japan)

Angular distributions (ADs) of O{sup +} fragments from C 1s photoexcited CO detected in coincidence with carbon KVV Auger electrons emitted in the horizontal direction were measured at photon energies of 298, 305, 320, and 450 eV. At 450 eV, the ADs are polarization-independent and coincide with the molecular-frame Auger electron angular distribution. All measured ADs can be rationalized as a product of the same molecular-frame Auger electron angular distribution and the axial selectivity in the photoionization process. Thus the interaction between the photoelectron and the Auger electron for the normal Auger decay of CO can be neglected, and the two-step model is a good approximation.

• OSTI ID: 21179962
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 101; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
APPROXIMATIONS
CARBON
CARBON MONOXIDE
ELECTRON EMISSION
ELECTRONS
EV RANGE 100-1000
OXYGEN IONS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHOTONS
POLARIZATION