Search for dissertations about: "soft X-ray emission"

Showing result 1 - 5 of 38 swedish dissertations containing the words soft X-ray emission.

2. 1. Resonant Soft X-Ray Emission Spectroscopy of Vanadium Oxides and Related Compounds

   Author : Thorsten Schmitt; Joseph Nordgren; Laurent Duda; Stefan Eisebitt; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; vanadium oxides; Li-battery; cathode materials; copper oxides; soft X-ray absorption; soft X-ray emission; resonant inelastic X-ray scattering; cluster model calculations; Fysik; Physics; Fysik;

   Abstract : This thesis addresses the electronic structure of vanadium and copper oxides using soft X-ray absorption (SXA) spectroscopy and resonant inelastic X-ray scattering (RIXS) at high brightness synchrotron radiation sources. In RIXS incident photons, tuned to the energy of specific absorption resonances, are inelastically scattered leaving behind a low energy valence excitation in the system studied. READ MORE

4. 2. A new laser-plasma X-ray source for microscopy and lithography

   Author : Lars Rymell; Atomfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; X-ray microscopy; X-ray lithography; Atomic and molecular physics; multilayer mirror; Fysicumarkivet A:1997:Rymell; Atom- och molekylärfysik; X-ray source; Laser-produced plasma; liquid droplet; debris-free; water window;

   Abstract : A new high-brightness source for soft X-rays and EUV-radiation has been developed. This laser-plasma source utilizes a microscopic liquid droplet or jet as target. The result is a reduction of debris emission by several orders of magnitude compared to conventional laser plasmas. READ MORE

5. 3. Soft X-ray Emission Spectroscopy of Liquids and Lithium Battery Materials

   Author : Andreas Augustsson; Joseph Nordgren; Jinghua Guo; Kevin Smith; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Atomic and molecular physics; Soft X-ray emission; resonant inelastic X-ray scattering; lithium battery; electronic structure; liquid water; Atom- och molekylfysik; Atomic and molecular physics; Atom- och molekylfysik;

   Abstract : Lithium ion insertion into electrode materials is commonly used in rechargeable battery technology. The insertion implies changes in both the crystal structure and the electronic structure of the electrode material. READ MORE

6. 4. Soft X-ray Scattering Dynamics Close to Core Ionization Thresholds in Atoms and Molecules

   Author : Johan Söderström; Jan-Erik Rubensson; Lorenzo Avaldi; Uppsala universitet; []
   Keywords : Physics; Soft X-ray emission; Resonant inelastic X-ray scattering; Double excitations; Helium; X-ray-emission-threshold-electron coincidence; Fysik;

   Abstract : In this Thesis studies of highly excited states in gas-phase atoms and molecules (He, Ne, N2, O2, N2O and CO2) using a variety of synchrotron-radiation based techniques are presented. The three techniques used most frequently are X-ray-emission-threshold-electron coincidence (XETECO), X-ray emission spectroscopy (XES) and X-ray photoelectron spectroscopy (XPS) and they are all given a brief introduction. READ MORE

7. 5. Anion redox processes in novel battery cathode materials investigated by soft X-ray spectroscopy

   Author : Felix Massel; Laurent Duda; Håkan Rensmo; Maria Hahlin; Kevin Smith; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; soft X-ray spectroscopy; X-ray absorption spectroscopy XAS ; resonant inelastic X-ray scattering RIXS ; lithium-ion battery LIB ; sodium-ion battery SIB ; anionic redox; cathode materials; layered manganese oxide; spinel LNMO;

   Abstract : This thesis presents experimental investigations of the electronic structure of emerging and novel cathode materials used in lithium- and sodium-ion batteries. The investigated materials include a range of oxide materials containing the elements nickel and manganese. READ MORE