Sökning: "Neutron reflectometry"

Hittade 4 uppsatser innehållade orden Neutron reflectometry.

  1. 1. Improving polarizing neutron optics by introducing 11B4C as interlayers

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Martin Falk; [2023]
    Nyckelord :Thin film multilayers; Neutron optics; Neutron polarization;

    Sammanfattning : In this report, the effects of adding 11B4C as interlayers into Fe/Si multilayers is studied. Fe/Si multilayers are commonly used for neutron polarization at large research facilities, and improving the polarizing properties would improve their efficiency. LÄS MER

  3. 2. Phosphonium Ionic Liquids at Interfaces: NR studies of interfacial electro-responsiveness

    Master-uppsats, KTH/Kemi

    Författare :Filip Mehler; [2022]
    Nyckelord :Neutron reflectometry; Ionic liquid; Phosphonium Ionic Liquid; Tribology; Neutronreflektometri; Jonvätskor; fosfoniumjonvätskor; tribologi;

    Sammanfattning : Fosfoniumjonvätskor har tidigare studerats som potentiella nya avancerade smörjmedel på grund av sina unika fysikaliska egenskaper och fördelar jämfört med både traditionella smörjmedel och andra typer av jonvätskor. Dessa studier har uppvisat lovande resultat med avseende på reducering av nötning och friktion såväl som kontroll av dessa parametrar med en pålagd elektrisk potential. LÄS MER

  4. 3. 2D Neutron Imaging with 10B-Based Multi-Blade Detector

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Kärnfysik

    Författare :Tõnu Ilves; [2018]
    Nyckelord :thermal; neutron; imaging; 2D; Multi-Blade; detector; boron; boron-10; nuclear physics; multi wire proportional chamber; digitizer; ESS; European Spallation Source; surface study; reflectometry; Physics and Astronomy;

    Sammanfattning : In the field of thermal-neutron imaging, the Multi-Blade detector concept and design, being developed for the upcoming European Spallation Source in Lund, Sweden, is unique. The current report presents, for the first time, the neutron-imaging capabilities of a boron-10-based Multi-Blade thermal-neutron detector, measured at a reflectometry instrument at Rutherford Appleton Laboratory in Oxfordshire, England under high spallation neutron flux. LÄS MER

  5. 4. Neutron Reflectometry performed on an Iridium Sample using the Multi-Blade Detector

    Master-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Alexander Backis; [2018]
    Nyckelord :Technology and Engineering; Physics and Astronomy;

    Sammanfattning : The current thesis presents the results from a neutron reflectometry analysis performed on data collected at ISIS in Rutherford Appleton Laboratories, England, in October 2017. The CRISP instrument was used and the Multi-Blade incorporated as a detector. This was the first attempt ever to use the Multi-Blade in this type of measurement. LÄS MER