Sökning: "Storage Rings"

Visar resultat 6 - 10 av 36 avhandlingar innehållade orden Storage Rings.

  1. 6. On the Challenges for Time-of-Flight Electron Spectroscopy at Storage Rings

    Författare :Christian Stråhlman; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; time-of-flight; photoelectron spectroscopy; MAX IV; storage ring; detector gating; chopper; coincidence spectroscopy;

    Sammanfattning : Time-of-flight (TOF) techniques for energy analysis have been common in electron spectroscopy for many decades. TOF-based electron spectrometers benefit from higher transmission and information rate compared to their main competitor: the hemispherical analyser; the drawback being their lower energy resolution. LÄS MER

  3. 7. Computational Studies of Hydrogen Storage Materials : Physisorbed and Chemisorbed  Systems

    Författare :Pornjuk Srepusharawoot; Rajeev Ahuja; Puru Jena; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Density functional theory; Ab initio molecular dynamics; Ab initio random structure searching; Hydrogen storage materials; Alkaline earth dicarbide; Condensed matter physics; Kondenserade materiens fysik; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Sammanfattning : This thesis deals with first-principles calculations based on density functional theory to investigate hydrogen storage related properties in various high-surface area materials and the ground state crystal structures in alkaline earth dicarbide systems. High-surface area materials have been shown to be very promising for hydrogen storage applications owing to them containing numerous hydrogen adsorption sites and good kinetics for adsorption/desorption. LÄS MER

  4. 8. Studies for the Low Emittance MAX-IV Storage Rings

    Författare :Hamed Tarawneh; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics; Touschek losses; energy acceptance; dynamic aperture; Lattice; emittance;

    Sammanfattning : This thesis discusses the feasibility of a low emittance lattice proposed for the MAX-IV storage rings. The MAX-IV facility will have two storage rings that are identical but operated at two different energies, 1.5 GeV for soft X-ray and 3 GeV for hard X-ray production. LÄS MER

  5. 9. Laser Photodetachment of Negative Ions - Fundamental Research and Applications

    Författare :Pontus Andersson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Negative Ions; Laser Spectroscopy; Photodetachment; Electron Affinity; Mass Spectrometry; Radiative Lifetime; Storage Rings; Mass Spectrometry;

    Sammanfattning : Photodetachment studies of atomic and molecular negative ions in the gas phase are presented. Negative ions are loosely bound quantum systems whose existence is strongly dependent on the correlations between the electrons. LÄS MER

  7. 10. Crystallization of charged particles in storage rings and Penning traps

    Författare :Joanne Beebe-Wang; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER