Search for dissertations about: "Boltzmann Transport Equation"

Showing result 1 - 5 of 14 swedish dissertations containing the words Boltzmann Transport Equation.

  1. 1. Electronic Transport in Strained Materials

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Thomas Dziekan; Uppsala universitet.; [2008]
    Keywords : Physics; Conductivity; Strain; Transport; Boltzmann theory; Transition metal; Hydrogen loading; Electronic structure; Density functional theory; Bulk material; Multilayer; Fysik;

    Abstract : In this thesis the conductivity of strained materials has been investigated using density functional theory and a semiclassical transport theory based on the Boltzmann equation.In transition metals trends are reproduced without adjustable parameters. READ MORE

  2. 2. Electronic Transport in Materials

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Velimir Meded; Uppsala universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Electronic Structure; Ab initio; Condensed Matter Theory; Hydrogen; Boltzmann Transport Equation; Magnetism; Alloys; Fysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : Transport properties within the Boltzmann transport equation for metallic multi-layer structures as well as bulk materials, were the prime topic of this work. Ab initio total energy calculations for Hydrogen loaded metallic multi-layers were performed in order to shed some light onto problem of H depleted layers at the interfaces that have been experimentally observed. READ MORE

  3. 3. First Principles Calculations of Electron Transport and Structural Damage by Intense Irradiation

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Carlos Ortiz; Uppsala universitet.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Condense matter theory; electronic structure; quasiparticles; GW theory; molecular dynamics; Boltzmann transport; electron transport; impact ionization; structural damage; dielectric response; structural biology; radiation detectors; scintillators; positron emission tommography; NATURAL SCIENCES Physics Condensed matter physics Electronic structure; NATURVETENSKAP Fysik Kondenserade materiens fysik Elektronstruktur; NATURAL SCIENCES Physics Condensed matter physics Semiconductor physics; NATURVETENSKAP Fysik Kondenserade materiens fysik Halvledarfysik; NATURAL SCIENCES Physics Condensed matter physics Biological physics; NATURVETENSKAP Fysik Kondenserade materiens fysik Biologisk fysik; NATURAL SCIENCES Physics Condensed matter physics Critical phenomena phase transitions ; NATURVETENSKAP Fysik Kondenserade materiens fysik Kritiska fenomen fasövergångar ; TECHNOLOGY Materials science Functional materials; TEKNIKVETENSKAP Teknisk materialvetenskap Funktionella material; Materiefysik; Physics of Matter;

    Abstract : First principle electronic structure theory is used to describe the effect of crystal binding on radiation detectors, electron transport properties, and structural damage induced by intense irradiation. A large database containing general electronic structure results to which data mining algorithms can be applied in the search for new functional materials, a case study is presented for scintillator detector materials. READ MORE

  4. 4. Radiation and matter: how do they play with each other?

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Davide Mancusi; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; heavy ions; models; transport codes; Boltzmann equation; Monte Carlo; radioprotection in space; radiotherapy; nuclear reactions;

    Abstract : The propagation of radiation is affected by the presence of matter; at the same time, the physicochemical properties of matter are modified by the passage of radiation. The interplay of radiation and matter is of crucial importance in many modern applications: accelerated heavy ions, in particular, can be used in radiotherapeutical treatments of some cancers; moreover, they are present in the space radiation environment and represent a serious threat to the health of spaceship crews and to the functionality of electronic equipment on board. READ MORE

  5. 5. Kinetic modelling of runaway in plasmas

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ola Embréus; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fokker-Planck equation; synchrotron radiation; plasma; runaway; bremsstrahlung; Boltzmann equation;

    Abstract : The phenomenon of runaway occurs in plasmas in the presence of a strong electric field, which overcomes the collisional friction acting on the charged particles moving through the plasma. A subpopulation of particles can then be accelerated to energies significantly higher than the thermal energy. READ MORE