Deep core photoelectron spectroscopic studies of atoms and molecules using hard x-ray
1University of Oulu, Faculty of Science, Physics, Nano and Molecular Systems Research unit (NANOMO)
|Online Access:||PDF Full Text (PDF, 1 MB)|
|Persistent link:|| http://urn.fi/urn:isbn:9789526228082
Oulu : University of Oulu,
|Publish Date:|| 2020-11-27
|Thesis type:||Doctoral Dissertation
|Defence Note:||Academic Dissertation to be presented with the assent of the Doctoral training committee of Technology and Natural Sciences of the University of Oulu for public discussion in the Auditorium L5, on December 11th, 2020, at 12 o'clock noon.
Professor Marko Huttula
Docent Kari Jänkälä
Professor Marc Simon
Professor Yong Wu
Docent Sami Heinäsmäki
Professor Eva Lindroth
Professor Marko Huttula
In this thesis the electronic structure and dynamics of iodine, krypton and bromine atoms in isolated and molecular forms are investigated through K-shell photoexcitation and subsequent Auger decay. The experimental studies are carried out using hard x-ray photoelectron spectroscopic techniques and the theoretical work by applying relativistic ab initio quantum mechanical models. The reported photoelectron spectra from iodine compounds CH3I and CF3I have the highest binding energy, 33.2 keV, recorded from any molecule in the gas phase up to date. From the spectra it is shown that chemical shifts are observable even at such deep core orbitals. From krypton a detailed analysis of Auger decay and Fluorescence cascade following K and L-shell ionization up to quadruple ionized states is presented. The work concerning bromine provides an analysis of photoionization, excitation, lifetime, Auger decay and nuclear dynamics around the K-edge of HBr molecule.
Osajulkaisut / Original papers
Osajulkaisut eivät sisälly väitöskirjan elektroniseen versioon / Original papers are not included in the electronic version of the dissertation.
Report series in physical sciences
|Type of Publication:||
G5 Doctoral dissertation (articles)
|Field of Science:||
114 Physical sciences
This project has received funding from theEuropean Union’s Horizon2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement (No. 713606). Academy of Finland and theUniversity of Oulu Graduate School are acknowledged for financial support.
|EU Grant Number:||
(713606) I4FUTURE - Novel Imaging and Characterisation Methods in Bio, Medical, and Environmental Research and Technology Innovations
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