Sökning: "laser-wakefield acceleration"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden laser-wakefield acceleration.

  1. 1. Multi-spectral X-ray imaging with a laser-plasma accelerator

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

    Författare :Andrea Angella; [2022]
    Nyckelord :Multi-spectral imaging; single-photon counting; X-ray absorption spectroscopy; XAS; LWFA; laser-wakefield acceleration; K-edge; imaging; metal-detection algorithm; Physics and Astronomy;

    Sammanfattning : This master thesis focuses on the creation of an algorithm to perform multispectral imaging of a metallic target using X-rays. The generation of an ultrashort high-power low-divergent X-ray beam is performed by means of a Ti:Sapphire laser driven wake-field plasma accelerator. LÄS MER

  3. 2. Relativistic attosecond electron pulses by laser wakefield acceleration

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

    Författare :Cornelia Gustafsson; [2020]
    Nyckelord :laser wakefield accelerator; laser wakefield acceleration; attosecond; electron pulses; Physics and Astronomy;

    Sammanfattning : The search for cheaper and more compact accelerators has led to the development of laser-driven plasma-based accelerators. In comparison to conventional particle accelerators, the plasma-based accelerator is inherently insensitive to the breakdown of the acceleration structure and therefore greater accelerating fields can be obtained. LÄS MER

  4. 3. In-line Phase-contrast Tomography using Betatron X-rays Produced by a Laser-Plasma Accelerator

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

    Författare :Kristoffer Svendsen; [2017]
    Nyckelord :source size; x-ray; in-line; phase-contrast; phase contrast; LWFA; laser wakefield acceleration; tomography; diffraction; diffraction simulation; laser-plasma acceleration; Physics and Astronomy;

    Sammanfattning : X-ray phase-contrast imaging is a powerful technique that allows great resolving power for low absorbing samples, such as biological tissue. This method relies on measuring the phase shift induced by the sample instead of the absorption traditional radiography relies on. LÄS MER

  5. 4. Monte Carlo simulations and measurements of the radiation environment at a laser-plasma accelerator

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

    Författare :Jack Strand Berg; [2016]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : In current experiments at the high-power laser facility at the Lund Laser Centre, electrons accelerated to hundreds of MeV over short distances by means of laser wakefield acceleration in produced plasmas. To determine the amount of secondary radiation generated when accelerated electrons interact with surrounding materials is of interest to ensure a safe working environment. LÄS MER

  7. 5. Interferometric Charecterization of Supersonic Gas-Jets for Laser Wakefield Acceleration

    Kandidat-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Jonatan Henriksson; [2016]
    Nyckelord :Interferometry; Laser Wakefield Acceleration; Mach-Zehnder; Gas-Jet characterization; Physics and Astronomy;

    Sammanfattning : The Multi-Terawatt laser at the LLC (Lund Laser Centre) is used to accelerate particles using laser wakefield acceleration. Laser wakefield acceleration is a particle acceleration method that utilizes intense electric fields in plasma created by high intensity laser pulses when passing through gas. LÄS MER