Search for dissertations about: "free-electron laser"

Showing result 1 - 5 of 47 swedish dissertations containing the words free-electron laser.

  1. 1. Efficiency Enhancement Techniques for Free-Electron Lasers

    University dissertation from Lund University, Faculty of Science, Department of Accelerator Physics, MAX IV Laboratory

    Author : Alan Mak; Lund University.; Lunds universitet.; [2017-05]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; free-electron laser; accelerator physics; efficiency enhancement; undulator tapering; phase jump method; synchrotron radiation; Fysicumarkivet:2017:Mak;

    Abstract : The central question addressed in this thesis is how to make the free-electron laser (FEL) more efficient. In recent years, coherent diffraction imaging provides an important motivation for efficiency enhancement. This is because a more efficient FEL process enables converting a larger fraction of the electron beam's power into optical power. READ MORE

  2. 2. Zone Plates for Hard X-Ray Free-Electron Lasers

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Daniel Nilsson; KTH.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; X-ray optics; Zone plates; XFEL; x-rays; free-electron laser; heat transfer;

    Abstract : Hard x-ray free-electron lasers are novel sources of coherent x-rays with unprecedented brightness and very short pulses. The radiation from these sources enables a wide range of new experiments that were not possible with previous x-ray sources. Many of these experiments require the possibility to focus the intense x-ray beam onto small samples. READ MORE

  3. 3. Studies on high brightness electron beams for short pulses and free electron laser

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Sara Thorin; Lund University.; Lunds universitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; bunch compression; sub-ps pulses; X-rays; High brightness electron beam; free electron laser; electron accelerator; collective effects.;

    Abstract : Accelerator based lightsources are one of the most powerful tools today for producing high intensity radiation at very short wavelengths. While synchrotron storage rings provide a high average brilliance in a wide wavelength range, the next generation of lightsources aim towards producing ultra-short pulses in the X-ray regime. READ MORE

  4. 4. X-ray free-electron laser based methods for structural and ultrafast dynamics studies of a photosynthetic reaction centre

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : David Arnlund; Göteborgs universitet.; Gothenburg University.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; WAXS; wide-angle x-ray scattering; XFEL; x-ray free-electron laser; reaction center; structural biology; ultrafast dynamics;

    Abstract : Life on earth is fuelled by the energy of sunlight, which must first be captured and converted into a chemical energy form useful to the cell. This process is known as photosynthesis and the major pathway of this energy conversion is via photosynthetic reaction centres. READ MORE

  5. 5. Toward Creating a Coherent, Next-Generation Light Source with special emphasis on nonlinear harmonic generation in single-pass, high-gain free-electron lasers

    University dissertation from MAX-lab, Lund University

    Author : Sandra G. Biedron; Lund University.; Lunds universitet.; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Visible and Ultraviolet Sources; Intense Particle Beams and Radiation Sources; Frequency Conversion; Free-Electron Lasers; Harmonic Generation; Physics; Fysik;

    Abstract : There is a strong desire for short wavelength (~1 Å), short pulsewidth (.... READ MORE