Double Photoionization of Atoms

Author

Marco Wiedenhoeft, Western Michigan University

Date of Award

8-2003

Degree Name

Doctor of Philosophy

Department

Sociology

Abstract

Double photoionization studies of atoms and molecules are new state-of-the-art studies providing a deeper knowledge of multi-electron excitations. This typeof work advances the understanding of many-body problems. Double photoionization of atoms is of great interest to learn about electron-electron correlation and relaxation effects in atoms and molecules. In order to study double photoionization processes, a new electron-electron coincidence apparatus was built to carry out the measurements. I will present the apparatus I built as well as the results of the measurement of the triply-differential-cross-section (TDCS) for the predicted interference and Post-Collision-Interaction (PCI) effects in the Xenon N₅O_2,3 O_2,3 Auger decay after 4d_5/2 photoionization. Furthermore I present measurements for direct double photoionization of Helium at various photon energies.

Access Setting

Dissertation-Open Access

Recommended Citation

Wiedenhoeft, Marco, "Double Photoionization of Atoms" (2003). Dissertations. 1322.
https://scholarworks.wmich.edu/dissertations/1322