Sökning: "Physics Fysik Phase transitions X-ray diffraction Phonons"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Physics Fysik Phase transitions X-ray diffraction Phonons.
1. Time-resolved X-ray diffraction studies of phonons and phase transitions
Sammanfattning : This thesis summarizes work in which time-resolved X-ray diffraction has been used to probe crystalline materials, thereby revealing the dynamics of phonons and phase transitions. X-ray diffraction is the standard tool in investigations of structure on the atomic scale. LÄS MER
2. Studies of Phonons and Phase Transitions by Time-Resolved X-ray Diffraction
Sammanfattning : When light is used to study structures, the wavelength limits the size of the details that can be resolved. Visible light can be used to investigate structures as small as a micrometre in size. To study smaller structures a shorter wavelength is required. LÄS MER
3. Time-Resolved Diffraction Studies of Structural Dynamics in Solids
Sammanfattning : Studies of the structural dynamics of solids can improve our understanding of atomic motion in materials, and may thus help in the manufacture of new devices or the development of materials with novel structures and properties. Ultrashort laser pulses, a few tens of femtoseconds long, can deliver high energies (mJ–kJ). LÄS MER
4. Generation and Applications of Short-Pulse X-ray Radiation
Sammanfattning : This thesis summarizes work using hard X-ray radiation on nanosecond and picosecond timescales. The focus is on the experimental part including detailed descriptions of setups for laser pumped - X-ray probe experiments. X-ray diffraction is sensitive to structural properties on the length scale of chemical bonds. LÄS MER
5. Time-Resolved X-ray Diffraction Studies of Laser-Induced Dynamics in Solids
Sammanfattning : X-ray diffraction is an invaluable tool in the field of structural dynamics. In the work described in this thesis, time-resolved X-ray diffraction experiments were carried out to investigate ultrafast lattice dynamics. LÄS MER