Search for dissertations about: "ELECTRON-DENSITY"

Showing result 1 - 5 of 90 swedish dissertations containing the word ELECTRON-DENSITY.

  1. 1. Cluster investigations of the extent and altitude distribution of the auroral density cavity

    Author : Love Alm; Göran T. Marklund; Tomas Karlsson; Rickard Lundin; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Auroral density cavity; auroral accelaration; Cluster; in situ observation; electron density; pseudo altitude; Physics; Fysik;

    Abstract : The auroral density cavity constitutes the boundary between the cold, dense ionospheric plasma and the hot, tenuous plasma sheet plasma. The auroral density cavity is characterized by low electron density and particle populations modified by parallel electric fields. READ MORE

  2. 2. On the Formation and Structure of the Ionosphere of Titan

    Author : Karin Ågren; Jan-Erik Wahlund; Andrew Nagy; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Titan; Cassini; space physics; ionisation; electron density; ionosphere; negative ions; electric currents; electric fields; solar zenith angle; Langmuir probe; Space and Plasma Physics; Rymd- och plasmafysik;

    Abstract : We present results on the ionospheric structure around Titan observed during numerous deep (.... READ MORE

  3. 3. Modelling and measuring transport in fusion plasmas

    Author : Istvan Pusztai; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fusion plasmas; ITG stability; microinstabilities; de-convolution; Lorentz operator; gyrokinetic equation; transport; quasilinear flux; beam emission spectroscopy; ion temperature gradient mode; electron density measurement; trapped electron response;

    Abstract : In the present thesis we consider theoretical and experimental aspects of the turbulent transport which is a crucial issue in fusion plasma physics.Experimental observations and gyrokinetic simulations show that collisions strongly influence the turbulent flux of particles. READ MORE

  4. 4. Improved methods for building models in electron density maps and their application to carbohydrate-binding proteins

    Author : Jin-Yu Zou; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  5. 5. Lithium-ion insertion in a V6O13 cathode

    Author : Örjan Bergström; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Chemistry; cathode material; vanadium oxide; lithium insertion; in situ X-ray diffraction; deformation electron density refinement; Kemi; Chemistry; Kemi; Inorganic Chemistry; oorganisk kemi;

    Abstract : The transition metal oxide V6O13 is a promising cathode material for high-capacity lithium-polymer batteries in conjunction with a lithium-metal anode. The electro-chemical behaviour of V6O13 has its origin in the ability of the vanadium ions to change their-oxidation states, combined with the open nature of its crystal structure which allows lithium ions to diffuse through it. READ MORE