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Journal Article

Exchange interaction effects in NO core level photoionization cross-sections

MPS-Authors

Rüdel,  A.
Max Planck Society;

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Hergenhahn,  U.
Electron Spectroscopy Group (ELSPEC), Max Planck Institute for Plasma Physics, Max Planck Society;

Maier,  K.
Max Planck Society;

Rennie,  E. E.
Max Planck Society;

/persons/resource/persons109731

Kugeler,  O.
Electron Spectroscopy Group (ELSPEC), Max Planck Institute for Plasma Physics, Max Planck Society;

Viefhaus,  J.
Max Planck Society;

/persons/resource/persons108765

Bradshaw,  A. M.
Electron Spectroscopy Group (ELSPEC), Max Planck Institute for Plasma Physics, Max Planck Society;
Office of the Director (DI), Max Planck Institute for Plasma Physics, Max Planck Society;

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Citation

Rüdel, A., Hergenhahn, U., Maier, K., Rennie, E. E., Kugeler, O., Viefhaus, J., et al. (2005). Exchange interaction effects in NO core level photoionization cross-sections. New Journal of Physics, 7: 189. Retrieved from http://www.iop.org/EJ/abstract/1367-2630/7/1/189.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-1AB3-1
Abstract
The effect of the exchange interaction in the photoionization continuum is investigated, using N 1s photoionization of NO into the 1s-12π (1Π) and (3Π) final states as an example. The separation in energy of these two final states is 1.41 eV. Significant differences in their partial photoionization cross-sections are observed over a wide range of energies and cannot be accounted for by the different multiplicity of the states. We suggest that the deviation of the 3Π/1Π cross-section ratio from the statistical weighting at intermediate energies is dominated by the difference in the final-state potential experienced by the photoelectron and at asymptotically high energies by the multiplet-dependent amount of intensity going into multi-electron (shake-up) processes. Calculations underpinning this point are presented. We also show supporting measurements of the 3Π/1Π cross-section ratio for O 1s ionization and the absolute photoabsorption cross-section for NO over a wide energy