Search for dissertations about: "extreme ultraviolet"

Showing result 21 - 25 of 49 swedish dissertations containing the words extreme ultraviolet.

  2. 21. Star clusters as engines of galaxy evolution

    Author : Mattia Sirressi; Angela Adamo; Matthew Hayes; Paul Crowther; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Extragalactic astronomy; Galaxies; Star formation; Interstellar medium; Stellar feedback; Ultraviolet surveys; Hubble Space Telescope; Spectroscopy; Data analysis; Astronomy; astronomi;

    Abstract : Feedback in star forming galaxies is the key process that regulates how many stars form given the available gas reservoir. The radiation, energy and momentum released by the stellar activity and the active galactic nuclei change the physical properties of the gas in the galaxy such as the ionisation state, the density and the kinematics. READ MORE

  4. 22. Scaling and Gating Attosecond Pulse Generation

    Author : Christoph Heyl; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Coherent imaging; Ultrafast electron dynamics; Single attosecond pulses; Attosecond pulse trains; XUV sources; High-order harmonic generation; XUV frequency combs; Fysicumarkivet A:2014:Heyl;

    Abstract : High-order harmonic generation (HHG) provides the basis for attosecond light sources delivering coherent pulses in the extreme ultraviolet spectral region. Such light sources are employed for a variety of applications within imaging, attosecond spectroscopy, and high-precision frequency metrology. READ MORE

  5. 23. Compact Liquid-Jet X-Ray Sources

    Author : Oscar Hemberg; KTH; []
    Keywords : liquid-jet; x-ray; EUV; plasma; electron beam; source;

    Abstract : This thesis describes the development, characterization andoptimization of compact, high-brightness, liquid-jet-targetx-ray sources. Two different source types have been developedfor different wavelength regions and applications. READ MORE

  6. 24. Sources and Diagnostics for Attosecond Science

    Author : Miguel Miranda; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Pulse Compression; High-order Harmonic Generation; Ultrafast; Ultrashort; Attosecond; Femtosecond; Pulse Characterization; Fysicumarkivet A:2012:Miranda;

    Abstract : Ultrafast science refers to physical events that happen on the femtosecond (1 fs=10^-15 s) and attosecond (1 as=10^-18 s) timescales. Generation of attosecond pulses is usually achieved by interacting high-intensity femtosecond pulses with matter (typically gases), in a process called high-order harmonic generation (HHG). READ MORE

  7. 25. Time-Resolved Attosecond Spectroscopy of He Using COLTRIMS

    Author : Predrag Ranitovic; Reinhold Schuch; C. L. Cocke; Robert Moshammer; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; attosecond spectroscopy; Physics; Fysik; Physics; fysik;

    Abstract : Tunable ultrafast lasers are becoming a standard tool for probing and controlling the dynamics of atoms, molecules and chemical reactions. This thesis is a contribution to a large, ongoing effort to make spectroscopic tools for inducing and controlling, in real time, the natural processes which occur on the femto and attosecond times scales. READ MORE