Sökning: "cavity radiation"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden cavity radiation.

  1. 1. Feasibility Study of X-ray Free Electron Lasers in Fourth Generation Storage Rings

    Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen; Lunds universitet/MAX IV-laboratoriet

    Författare :Jordis Hansen; [2023]
    Nyckelord :XFEL; Storage Ring; Synchrotron Radiation; Physics and Astronomy;

    Sammanfattning : This thesis studies the feasibility of a cavity based X-ray free electron laser in a fourth generation storage ring. The cavity design allows for modulation of the electron beam over several passes through the undulator. Simulations based on the PETRA IV facility are done to create the photon flux spectrum of a light pulse produced by an undulator. LÄS MER

  3. 2. Salivary flow rate and xerostomia in patients with head and neck cancer after radiation therapy

    Master-uppsats, Umeå universitet/Tandläkarutbildning

    Författare :Alexander Hanna; Andrea Capraru; [2022]
    Nyckelord :Salivary flow rate; head and neck cancer; xerostomia; hyposalivation;

    Sammanfattning : Background: Radiation therapy used for head and neck cancer patients cause many side effects in the oral cavity and above all affects the salivary glands. Complaint of dry mouth (xerostomia) and hyposalivation are common as well as swallowing difficulty (dysphagia) even after the cancer is remitted. LÄS MER

  4. 3. The Influence of Cavity Widths and Lateral Ventilation Conditions on the Fire Behaviour within a Non-Combustible Ventilated Façade System

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Daniel Fogerty; [2020]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Present uncertainties in key ventilation parameters, characterising the fire performance of facades, has necessitated clarification in the foundational understanding of the Fire Science Body of Knowledge. A test program conducted in collaboration between Lunds Universitet and the Kingspan Group, studied the influence of cavity widths and lateral ventilation conditions on the fire behaviour within Intermediate-scale ventilated façades following the ISO 13785-1 standards. LÄS MER

  5. 4. A Monte Carlo simulation study of collimators for a high-spatial-resolution Gamma Emission Tomography instrument

    Master-uppsats, Uppsala universitet/Tillämpad kärnfysik

    Författare :Anastasios Anastasiadis; [2019]
    Nyckelord :;

    Sammanfattning : The present master thesis concerns a study of collimator designs for a high-spatial-resolution Gamma Emission Tomography (GET) instrument for used fuels utilizing Monte Carlo simulation codes. Designing a collimator for this purpose is a multilateral process that requires many interconnected and conflicting objectives to be taken into consideration. LÄS MER

  7. 5. Characterizing particulate carbon using dielectric property measurements

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Madeleine Syk; Joakim Vollmer; [2018]
    Nyckelord :black carbon; elemental carbon; carbonaceous aerosols; soot; fullerene C60; multiwalled carbon nanotubes; mesoporous carbon; impedance; dielectric; snow melting; capacitance; waveguide;

    Sammanfattning : Interest in effects of carbonaceous particles in the atmosphere has recently taken an upswing due to knowledge of how these particles affect our environment. Carbonaceous aerosols are characterized by their dark color, giving them the ability to absorb both incoming and outgoing radiation of all wavelengths in the atmosphere. LÄS MER