Near threshold excitation of KVV Auger spectra in carbon monoxide using electron--electron coincidence spectroscopy
Electron--electron coincidence spectroscopy has been used to separate KVV Auger spectra in CO into several component spectra, each arising from different core-excited initial states. Results are presented for the Auger decay of ions in which either a carbon 1s or oxygen 1s electron has been ionized and for the decay of neutral molecules in which either a carbon 1s or oxygen 1s electron has been excited to the vacant 2..pi.. orbital. The spectra from the neutral molecules have been studied and analyzed in some detail. These autoionization spectra can be broken into two parts. The highest kinetic energy part where the 2..pi.. electron participates in the decay is easily understood; in this case, the Auger transitions lead to well-known one-hole states of CO/sup +/. The lower-energy part arises from deexcitation with the 2..pi.. electron remaining as a spectator. This part of the spectrum is similar to the ''normal'' Auger spectrum shifted approximately 10 eV by the Coulomb interaction with the spectator electron. The similarity is greatest for the Auger spectra of CO but is less apparent for the spectrum of N/sub 2/.
- Research Organization:
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331
- OSTI ID:
- 6055133
- Journal Information:
- J. Chem. Phys.; (United States), Vol. 82:7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON MONOXIDE
AUGER ELECTRON SPECTROSCOPY
ELECTRON-MOLECULE COLLISIONS
INNER-SHELL IONIZATION
AUGER EFFECT
EXCITATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
ELECTRON COLLISIONS
ELECTRON SPECTROSCOPY
ENERGY-LEVEL TRANSITIONS
IONIZATION
MOLECULE COLLISIONS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena