Search for dissertations about: "magnetfält"

Showing result 1 - 5 of 52 swedish dissertations containing the word magnetfält.

  1. 1. Theoretical Atomic Spectroscopy of Earthbound and Stellar Plasma

    University dissertation from Lund University, Faculty of Science, Department of Physics

    Author : Jon Grumer; [2016-09]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; atomstruktur; atomära processer; elektronkorrelation; plasmaspektroskopi; magnetfält; hyperfinstruktur; solkoronan; rymdväder; förekomst av grundämnen i stjärnor; datorsimuleringar; Zeemaneffekt; relativistiska effekter; atomic structure; atomic processes; computer simulation; electron correlation; relativistic atomic theory; plasma spectroscopy; Zeeman effect; magnetic fields; hyperfine structure; solar corona; space weather; stellar abundances; Fysicumarkivet A:2016:Grumer;

    Abstract : Motivated by spectroscopic analysis of astrophysical and laboratory plasma, this thesis concerns the fundamental structure and spectral properties of atoms and their ions. The multiconfiguration Dirac-Hartree-Fock (MCDHF) method is used to predict the emission or absorption of radiation, by atomic systems in general, and of heavy and highly charged ions in particular. READ MORE

  2. 2. Spectral estimates for the magnetic Schrödinger operator and the Heisenberg Laplacian

    University dissertation from Stockholm : KTH

    Author : Anders Hansson; Ari Laptev; B Malcolm Brown; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; spectral theory; Schrödinger operator; magnetic field; Aharonov-Bohm; Lieb-Thirring; diamagnetic inequality; Heisenberg group; Heisenberg Laplacian; hypoelliptic; spektralteori; Schrödingeroperator; magnetfält; Aharonov-Bohm; Lieb-Thirring; diamagnetisk olikhet; Heisenberggrupp; Heisenberg-Laplace-operator; hypoelliptisk; MATHEMATICS; MATEMATIK;

    Abstract : I denna avhandling, som omfattar fyra forskningsartiklar, betraktas två operatorer inom den matematiska fysiken.De båda tidigare artiklarna innehåller resultat för Schrödingeroperatorn med Aharonov-Bohm-magnetfält. READ MORE

  3. 3. Magnetic map sense in animals: effects of geographic and magnetic displacements

    University dissertation from Department of Biology, Lund University

    Author : Jannika Boström; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Oenanthe oenanthe; skylight polarization; geomagnetic map; geomagnetic field; endogenous migration programme; migratory fuelling; orientation; animal navigation;

    Abstract : Migration research is a large and diverse field and in my thesis I have focused on the impact of geomagnetic cues on animal orientation, navigation and migratory fuelling. Several animal species from widely different taxa possess the ability to sense and make use of geomagnetic information during migratory or homing events. READ MORE

  4. 4. Space Weather - Solar magnetic variation and its impact on Earth's atmosphere

    University dissertation from Lund Observatory, Lund University

    Author : Fredrik Boberg; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; klimatologi; kartografi; pedology; Physical geography; marklära; geomorphology; climatology; cartography; space weather - solar magnetism - solar wind - geomagnetic activity- North Atlantic Oscillation - climate change - neural networks- wavelet analysis; Fysisk geografi; geomorfologi; Astronomy; space research; cosmic chemistry; Astronomi; rymdvetenskap; kosmisk kemi; Fysicumarkivet A:2003:Boberg;

    Abstract : A solar magnetic field is continuously being created in the solar interior. As the field evolves outward through the solar atmosphere and into the enveloping heliosphere, it causes effects on a wide range of temporal and spatial scales. READ MORE

  5. 5. Resistivity and the solid-to-liquid transition in high-temperature superconductors

    University dissertation from Stockholm : KTH

    Author : Beatriz Espinosa Arronte; Magnus Andersson; Charles Simon; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; high-temperature superconductors; vortex dynamics; vortex solid-to-liquid transition; critical scaling; glass transition; Bose glass; heavy-ion irradiation; YBCO; Tl2Ba2CaCu2O8 d; oxygen deficiency.; NATURAL SCIENCES Physics Condensed matter physics; NATURVETENSKAP Fysik Kondenserade materiens fysik;

    Abstract : In high-temperature superconductors a large region of the magnetic phase diagram is occupied by a vortex phase that displays a number of exciting phenomena. At low temperatures, vortices form a truly superconducting solid phase which at high temperatures turns into a dissipative vortex liquid. READ MORE