Sökning: "X-ray free-electron lasers"

Visar resultat 21 - 25 av 36 avhandlingar innehållade orden X-ray free-electron lasers.

1. 21. Nuclear Dynamics in Linear and Non-linear X-ray Processes

   Författare :Quan Miao; Faris Gel'mukhanov; Vincenzo Carravetta; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : New generations of brilliant synchrotron radiation sources and intense X-ray and optical lasers have opened unprecedent opportunities in linear and non-linear spectroscopies of molecules. This together with new instrumentation calls for further development of theory to explain observations and suggest new experiments. LÄS MER

3. 22. Ultrafast Structural and Electron Dynamics in Soft Matter Exposed to Intense X-ray Pulses

   Författare :Olof Jönsson; Carl Caleman; Nicusor Timneanu; Olle Björneholm; Jörgen Larsson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; X-ray free-electron laser; Serial Femtosecond Crystallography; Radiation Damage; Plasma Simulations; Ultrafast Lasers; X-ray Imaging; Diffraction Theory; Ultrafast Phenomena; Hit Detection; Plasma Emission Spectra; Serial Femtosecond Crystallography; Protein Structure; Protein Crystallography; Metalloprotein; Non-thermal Heating; Water; Ferredoxin; NLTE Simulation; XFEL; FEL; SFX; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

   Sammanfattning : Investigations of soft matter using ultrashort high intensity pulses have been made possible through the advent of X-ray free-electrons lasers. The last decade has seen the development of a new type of protein crystallography where femtosecond dynamics can be studied, and single particle imaging with atomic resolution is on the horizon. LÄS MER

4. 23. Creating and Probing Extreme States of Materials : From Gases and Clusters to Biosamples and Solids

   Författare :Bianca Iwan; Nicusor Timneanu; Janos Hajdu; Stacey Sorensen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; free-electron laser; ultrashort X-rays; non-equilibrium plasma; Coulomb explosion; isotope effect; hydrodynamic expansion; ion acceleration; high intensity lasers; ablation; time-of-flight spectroscopy; Fysik; Physics;

   Sammanfattning : Free-electron lasers provide high intensity pulses with femtosecond duration and are ideal tools in the investigation of ultrafast processes in materials. Illumination of any material with such pulses creates extreme conditions that drive the sample far from equilibrium and rapidly convert it into high temperature plasma. LÄS MER

5. 24. Femtosecond Dynamics in Water and Biological Materials with an X-Ray Laser

   Författare :H. Olof Jönsson; Carl Caleman; Nicusor Timneanu; Olle Björneholm; David van der Spoel; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

   Sammanfattning : Using high intensity ultrashort pulses from X-ray free electron lasers to investigate soft matter is a recent and successful development. The last decade has seen the development of new variant of protein crystallography with femtosecond dynamics, and single particle imaging with atomic resolution is on the horizon. LÄS MER

7. 25. From Solution into Vacuum - Structural Transitions in Proteins

   Författare :Alexandra Patriksson; David van der Spoel; Carol Robinson; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; molecular dynamics; computer simulations; mass spectrometry; electrospray ionization; free-electron laser; vacuum structure of proteins; solvation; desolvation; single molecule imaging; Chemistry; Kemi;

   Sammanfattning : Information about protein structures is important in many areas of life sciences, including structure-based drug design. Gas phase methods, like electrospray ionization and mass spectrometry are powerful tools for the analysis of molecular interactions and conformational changes which complement existing solution phase methods. LÄS MER