Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 13: Photoionisation I (joint session A and MO)
A 13.1: Vortrag
Donnerstag, 5. April 2001, 15:45–16:00, H1012
High Resolution Photoelectron Spectroscopy of the Scandium 2p - 3d Excitation — •Bernhard Obst1, Tobias Richter1, Peter Zimmermann1, and Michael Martins2 — 1Institut für Atomare und Analytische Physik, Technische Universität Berlin, D-10623 Berlin — 2Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin
Resonant photoionization of inner shell electrons is very sensitive to the electron configuration of the outer electrons. Therefore resonant 2p–3d-photoionization is a suitable method to study electron-electron-correlations in the outer shells. Since the outer electron configuration of the system is affected by the transition from an atom to a surface-layer system resonant inner shell photoionization is used in surface science to study this transition. To reach a good interpretation and especially to separate surface and bulk from atomic effects a thorough investigation and a good understanding of the resonant atomic inner shell photoionization is needed.
High resolution photoelectron spectra taken with hemispherical electron analyzer (SCIENTA SES200) at the U49-1/PGM beamline at BESSY II are presented and compared to Hartree-Fock calculations carried out with the Cowan code [1].
[1] R.D Cowan, The theory of atomic structure and spectra, University of California Press, Berkeley (1981)