Sökning: "IBA"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet IBA.

  1. 1. Experimental studies of materials migration in magnetic confinement fusion devices : Novel methods for measurement of macro particle migration, transport of atomic impurities and characterization of exposed surfaces

    Författare :Igor Bykov; Henric Bergsåker; Matej Mayer; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fusion; tokamak; RFP; divertor; limiter; SOL; transport; migration; surface analysis; IBA; ion micro beam; beryllium; tritium; Physics; Fysik;

    Sammanfattning : During several decades of research and development in the field of Magnetically Confined Fusion (MCF) the preferred selection of materials for Plasma Facing Components (PFC) has changed repeatedly. Without doubt, endurance of the first wall will decide research availability and lifespan of the first International Thermonuclear Research Reactor (ITER). LÄS MER

  3. 2. Investigation of lithium and fluorine content in geological materials using Nuclear Reaction Analysis (NRA)

    Författare :Nathaly de La Rosa; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nuclear reaction analysis NRA ; Geological material; Elemental composition analysis; Ion Beam Analysis IBA ;

    Sammanfattning : This work focuses on the optimization of the Nuclear Reaction Analysis (NRA) technique to determine the content of lithium and fluorine in geological materials. Measuring low concentration of these isotopes is of great relevance in many fields such as geological, astrophysical, biological and material sciences. LÄS MER

  4. 3. Impact of Surface Structures onDeposition and Erosion in a Tokamak

    Författare :Yushan Zhou; Henric Bergsåker; Ivancica Bogdanovic Radovic; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Deposition; erosion; JET; micro ion beam analysis; Deposition; erosion; JET; mikrojonstråleanalys; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Fusion is a potentially unlimited and environmentally friendly energy source for human society in the future. However, along the way towards the application of fusion energy there are still unresolved complications. Among them, deposition and erosion are two critical issues. LÄS MER

  5. 4. Auxin dynamics during adventitious root formation in pea (Pisum sativum L.) cuttings

    Författare :Ann-Caroline Nordström; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ärtväxter;

    Sammanfattning : The regulatory function of the auxins indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) inadventitious root formation was studied in cuttings of pea (Pisum sativum L.). These auxins, aswell as the conjugate of IAA with aspartic acid (lAAsp), were identified as naturally occurringconstituents in both seedlings and cuttings. LÄS MER

  7. 5. Development of techniques for light isotope analysis at LIBAF

    Författare :Maciek Borysiuk; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2013:Borysiuk;

    Sammanfattning : The overall goal of this thesis is to test new detector technologies and data acquisition systems, for use in Ion Beam Analysis IBA. This is intended to complement the existing setup, which is routinely used at Lund Ion beam Analysis Facility LIBAF. LÄS MER