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Showing result 1 - 5 of 449 swedish dissertations matching the above criteria.

  2. 1. Electron beam sizes and lifetimes at MAX II and MAX III

    Author : Anders Rosborg; Lunds universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electron accelerator; Storage ring; Synchrotron light source; Synchrotron radiation; Electron beam profile; Emittance; Beam size; Fysicumarkivet A:2012:Hansson; Lifetime; Bunch length; Landau cavities;

    Abstract : The MAX II and MAX III synchrotron light sources at MAX-lab provide synchrotron radiation for experiments in a wide variety of research fields. The synchrotron radiation is emitted by ultra-relativistic electrons circulating in electron storage rings. READ MORE

  4. 2. 3D Electron Diffraction : Application and Development towards High-quality Structure Determination

    Author : Yunchen Wang; Wei Wan; Xiaodong Zou; Junliang Sun; Mauro Gemmi; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; three-dimensional electron diffraction; structure determination; rotation electron diffraction; Inorganic Chemistry; oorganisk kemi;

    Abstract : Electron crystallography has been proven to be effective for structure determination of nano- and micron-sized crystals. In the past few years, 3D electron diffraction (3DED) techniques were used for the structure solution of various types of complex structures such as zeolites, metal-organic frameworks (MOF) and pharmaceutical compounds. READ MORE

  5. 3. Modeling of Electron Cooling : Theory, Data and Applications

    Author : Karin Rathsman; Tord Johansson; Pia Thörngren; Dieter Prasuhn; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electron cooling; Beam dynamics; Vlasov technique; Nonlinear damping; Monte Carlo simulations; Nuclear physics; Kärnfysik; Nuclear Physics; Kärnfysik;

    Abstract : The Vlasov technique is used to model the electron cooling force. Limitations of the applicability of the method is obtained by considering the perturbations of the electron plasma. READ MORE

  6. 4. Studies on high brightness electron beams for short pulses and free electron laser

    Author : Sara Thorin; Lunds universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bunch compression; sub-ps pulses; X-rays; High brightness electron beam; free electron laser; electron accelerator; collective effects.;

    Abstract : Accelerator based lightsources are one of the most powerful tools today for producing high intensity radiation at very short wavelengths. While synchrotron storage rings provide a high average brilliance in a wide wavelength range, the next generation of lightsources aim towards producing ultra-short pulses in the X-ray regime. READ MORE

  7. 5. Material Development for Electron Beam-based Powder Bed Fusion

    Author : William Sjöström; Lars-Erik Rännar; Carlos Botero; Johan Moverare; Mittuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive manufacturing; Electron beam; Powder bed fusion; EBM; PBF-EB; PBF-EB M; PBF-EB C; Process development; Material development; Ti-6Al-4V; 316L; V4E; Al2O3;

    Abstract : Electron beam powder bed fusion (PBF-EB) is an additivemanufacturing (AM) method based on layer-by-layer melting of apowder bed. The technology is industrialized in certain applicationsbut still considered as immature and is not as widely used as laserbeam-based systems (PBF-LB). READ MORE