E-Dissertationen: Suche
Anzeige der Dokumente 1-10 von 404
Komplexe dynamische Systeme als funktionelle Netzwerke: Möglichkeiten und Grenzen der datengetriebenen Analyse
(2012-03-12)
Aus einer Vielzahl von Subsystemen zusammengesetzte dynamische Systeme können als Netzwerk aufgefasst und mit Methoden der Graphentheorie beschrieben werden. Innerhalb dieses Ansatzes werden die Subsysteme durch Knoten und ...
Dynamical Studies of the Globular Cluster Systems around the Giant Elliptical Galaxies NGC4636 and NGC1399
(2011-08-02)
Dark matter studies in elliptical galaxies were long hampered by the lack of suitable dynamical tracers. The advent of 8 m-class telescopes equipped with multi-object spectrographs has made it possible to use globular ...
Influence of UV light and heat on the ferroelectric properties of lithium niobate crystals
(2011-07-04)
One of the most important non-linear-optical materials is lithium niobate, due to its ease of fabrication, robustness, transparency in the visible-to-infrared and excellent nonlinear properties. In this thesis the issue ...
Dynamical and Mechanistic Effects of High Pressure Fluids in the Earth's Crust
(2012-03-16)
Overpressurized fluids in the lithosphere play a significant role in a diverse range of globally observed natural hazards. Their occurrence during volcanic eruptions or earth degassing processes is apparent, but their ...
Tau lepton reconstruction with energy flow and the search for R-parity violating supersymmetry at the ATLAS experiment
(2012-08-31)
The ATLAS experiment at the Large Hadron Collider (LHC) is measuring proton-proton collisions at a centre-of-mass energy of √s=7 TeV since 2010, an energy never reached before in collider experiments. A wide variety of ...
Characterization of metallic nanoparticles by high-resolution X-ray absorption and X-ray emission spectroscopy
(2012-03-16)
In almost all areas of technology, metallic nanoparticles are of interest due to their special thermal, electronic, magnetic and optical properties.
Their special properties are mainly due to their small size which ...
Their special properties are mainly due to their small size which ...
Sensitivity of the ATLAS experiment in pp-collisions at a centre of mass energy of 14TeV at the LHC to a Higgs boson with large decay-width to invisible final states
(2012-01-20)
So far experimentally not ruled out, the stealthy Higgs scenario proposes a hidden scalar sector, to which only the Higgs has non-vanishing and possibly large couplings. Due to decays into the scalars the Higgs acquires a ...
A Sensitivity Study for Higgs Boson Production in Vector Boson Fusion in the H → ττ →lh + 3ν Final State with ATLAS
(2012-02-17)
For a hypothetical Higgs boson mass between 114.4GeV and about 135GeV the production by Vector Boson Fusion and the decay H → ττ →lh + 3ν is one of the most promising discovery channels at the LHC. In this thesis, a study ......
Coherently driven three-level atoms in an optical cavity
(2012-02-17)
We experimentally realize strong light-matter coupling of a single cesium atom to a single mode of a high-finesse optical cavity. In this regime, the optical properties of one atom change the transmission spectrum of the ...
Determination of the η mass from the production threshold for the γp → pη reaction
(2012-01-30)
This thesis is dedicated to a new precise determination of the η meson mass based on a measurement of the threshold for the γp → pη reaction. This experiment was performed in the years 2004/2005 using the Crystal Ball/TAPS ...