University of Oulu

Deep core photoelectron spectroscopic studies of atoms and molecules using hard x-ray

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Author: Boudjemia, Nacer1
Organizations: 1University of Oulu, Faculty of Science, Physics, Nano and Molecular Systems Research unit (NANOMO)
Format: ebook
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1 MB)
Persistent link: http://urn.fi/urn:isbn:9789526228082
Language: English
Published: Oulu : University of Oulu, 2020
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.
Tutor: Professor Marko Huttula
Docent Kari Jänkälä
Professor Marc Simon
Reviewer: Professor Yong Wu
Docent Sami Heinäsmäki
Opponent: Professor Eva Lindroth
Kustos: Professor Marko Huttula
Description:

Abstract

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.

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Osajulkaisut / Original papers

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

  1. Boudjemia, N., Jänkälä, K., Gejo, T., Nagaya, K., Tamasaku, K., Huttula, M., … Oura, M. (2019). Deep core photoionization of iodine in CH₃I and CF₃I molecules: how deep down does the chemical shift reach? Physical Chemistry Chemical Physics, 21(10), 5448–5454. https://doi.org/10.1039/c8cp07307d

    Rinnakkaistallennettu versio / Self-archived version

  2. Boudjemia, N., Jänkälä, K., Püttner, R., Gejo, T., Journel, L., Kohmura, Y., … Oura, M. (2020). Deep-core photoionization of krypton atoms below and above the 1s ionization threshold. Physical Review A, 101(5). https://doi.org/10.1103/physreva.101.053405

    Rinnakkaistallennettu versio / Self-archived version

  3. Boudjemia, N., Jänkälä, K., Püttner, R., Marchenko, T., Travnikova, O., Guillemin, R., … Simon, M. (2020). Electron spectroscopy and dynamics of HBr around the Br 1s⁻¹ threshold. Physical Chemistry Chemical Physics. https://doi.org/10.1039/d0cp04787b

    Rinnakkaistallennettu versio / Self-archived version

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Series: Report series in physical sciences
ISSN: 1239-4327
ISSN-L: 1239-4327
ISBN: 978-952-62-2808-2
ISBN Print: 978-952-62-2807-5
Issue: 138
Type of Publication: G5 Doctoral dissertation (articles)
Field of Science: 114 Physical sciences
Subjects:
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