Sökning: "Scattering Theory"

Visar resultat 1 - 5 av 234 avhandlingar innehållade orden Scattering Theory.

  1. 1. Light scattering and absorption in pigmented coatings : Theory and experiments

    Författare :William E. Vargas; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; Solid State Physics; fasta tillståndets fysik;

    Sammanfattning : Radiative transfer models are used to describe optical properties of polymericthick films containing spherical inhomogeneities with sizes comparable to thewavelength of the incident radiation. From Lorenz-Mie theory various parametersrelated to elastic light scattering and absorption by single particles are calculated, i.e. LÄS MER

  2. 2. Spin ice and demagnetising theory

    Författare :Mikael Twengström; Patrik Henelius; Peter Holdsworth; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Geometrical frustration; spin ice; Monte Carlo simulations; demagnetising theory; special temperatures; Ewald summation; neutron scattering; structure factors; loop algorithms; parallel tempering; frustrated ferromagnets; equilibration issues; long-range interactions; exchange interactions.; Physics; Fysik;

    Sammanfattning : Frustration, or the inability to simultaneously minimise all local interactions is, a phenomenon occurring in a broad number of physical systems. We will in this thesis focus on a class of frustrated ferromagnetic materials called spin ices and how both numerical and experimental techniques can be used to understand their properties. LÄS MER

  3. 3. Neutron Scattering at 96 MeV

    Författare :Angelica Öhrn; Jan Blomgren; Robert Haight; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Nuclear physics; neutron; elastic scattering; inelastic scattering; differential cross section; optical model potential; Wick s limit; angular distribution; pre-equilibrium; Kärnfysik; Physics; Fysik;

    Sammanfattning : Data on elastic scattering of 96 MeV neutrons from 56Fe, 89Y and 208Pb in the angular interval 10-70° are presented. The previously published data on 208Pb have been extended, as a new method has been developed to obtain additional information at the most forward angles. LÄS MER

  4. 4. Phase dependent heat transport in superconducting junctions with scattering theory

    Författare :Fatemeh Hajiloo; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; heat transport; heat conductance; scattering theory; superconducting hybrid devices; conductance fluctuations; phase dependent heat currents;

    Sammanfattning : The operation of nanoscale devices at low temperatures is highly sensitive to heating effects. This motivates current research on controlling heat currents in these devices. LÄS MER

  5. 5. Approximation of Schrödinger Operators and Scattering Data Using Multiresolution Analysis

    Författare :Anders Holst; Partiella differentialekvationer; []
    Nyckelord :Operator Theory; Scattering Theory;

    Sammanfattning : .... LÄS MER