Search for dissertations about: "Fysik"
Showing result 31 - 35 of 6267 swedish dissertations containing the word Fysik.
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31. Nuclear symmetry energy and neutron-proton pair correlations in microscopic mean field theory
Abstract : A major task of nuclear structure theory is to develop an effective interaction that is capable to predict properties of nuclei under extreme conditions. In this thesis three different areas of effective interactions have been studied: i) the density dependence, which is of importance for the understanding of neutron stars and neutron rich nuclei; ii) the symmetry energy which governs the evolution of the binding energy with changing N/Z ratio; and iii) the neutron proton pairing energy. READ MORE
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32. Diode-pumped rare-earth-doped quasi-three-level lasers
Abstract : Many rare-earth-doped materials are suitable for laser operation and this thesis focuses on diode-pumped solid-state lasers employing crystals doped with the trivalent rare-earth ions neodymium (Nd3+), ytterbium (Yb3+) and erbium (Er3+). Especially, the quasi-three-level transitions in Nd and Yb have been studied as well as the eye-safe three-level transition around 1. READ MORE
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33. Spectroscopy of neutron deficient nuclei in the A=90 and A=170 mass regions
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34. Superdeformed states in A90 nuclei
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35. A multi-prism lens for hard X-Rays
Abstract : This thesis describes a new type of refractive lens for hardx-rays. It is shown that a linear array of prisms, slightlyinclined with respect to the optical axis, will form a linefocus at a certain distance from the lens. Hence, the namemulti-prism lens. READ MORE
