Abstract

In this thesis, the electronic structure and electrodynamical processes of atomic mercury and potassium are studied experimentally and theoretically. Experimental measurements were carried out by means of both conventional photoelectron spectroscopy and multielectron coincidence technique utilizing magnetic bottle time-of-flight electron spectrometer together with pulsed synchrotron radiation. The thesis focuses on the theoretical modelling and interpretation of the experimentally observed transitions and binding energies. The calculations were carried out with relativistic multiconfiguration Dirac-Fock (MCDF) and non-relativistic Hartree-Fock (MCHF) methods. Theoretical results were used to interpret the experimental data in order to study the electron binding energy level structure and electron transition dynamics of these atoms.

Osajulkaisut / Original papers

Osajulkaisut eivät sisälly väitöskirjan elektroniseen versioon. / Original papers are not included in the electronic version of the dissertation.

1. Khalal, M. A., Soronen, J., Jänkälä, K., Huttula, S.-M., Huttula, M., Bizau, J.-M., Cubaynes, D., Guilbaud, S., Ito, K., Andric, L., Feng, J., Lablanquie, P., Palaudoux, J., & Penent, F. (2017). Multielectron spectroscopy: energy levels of Kn+and Rbn+ions (n= 2, 3, 4). Journal of Physics B: Atomic, Molecular and Optical Physics, 50(22), 225003. https://doi.org/10.1088/1361-6455/aa90d6

   Rinnakkaistallennettu versio / Self-archived version

2. Palaudoux, J., Sheinerman, S., Soronen, J., Huttula, S.-M., Huttula, M., Jänkälä, K., Andric, L., Ito, K., Lablanquie, P., Penent, F., Bizau, J.-M., Guilbaud, S., & Cubaynes, D. (2015). Valence Auger decay following 3s photoionization in potassium. Physical Review A, 92(1). https://doi.org/10.1103/physreva.92.012510

3. Huttula, S.-M., Soronen, J., Huttula, M., Penent, F., Palaudoux, J., Andric, L., & Lablanquie, P. (2015). Auger decay of core valence double photoionized states in atomic mercury. Journal of Physics B: Atomic, Molecular and Optical Physics, 48(11), 115001. https://doi.org/10.1088/0953-4075/48/11/115001

4. Soronen, J., Aho, S.-M., Huttula, M., Penent, F., Palaudoux, J., Andric, L., & Lablanquie, P. (2021). Photoionization and subsequent Auger decay of atomic potassium 2s subshell. Manuscript in preparation.