Master Theses

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2018-01-24
15:28
OpenAccess [PUBDB-2018-00788] Book/Report/Master Thesis
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Hollow Core Plasma Channel Generation
[DESY-THESIS-2018-005]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY THESIS, 77 pp. (2018) [10.3204/PUBDB-2018-00788] = Masterarbeit, Universität Hamburg, 2018  GO
The use of a hollow plasma channel in plasma-based acceleration has ben-eficial properties for the acceleration of electron and positron bunches. Inthe scope of the FLASHForward facility at DESY, the generation of sucha plasma structure is examined. [...]
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2017-12-22
10:57
[PUBDB-2017-14031] Master Thesis

Simulationsgestützte Gestaltung konstruktiver Varianten des strahlungsgekühlten Targets für die Positronenquelle des International Linear Collider (ILC)
70 pp. (2017) = Masterarbeit, Technische Hochschule Wildau, 2017
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2017-12-12
17:23
OpenAccess [PUBDB-2017-13374] Master Thesis

Double Pulse Correlation Spectroscopy with Visible Light
Hamburg : DESY, 54 pp. (2017) [10.3204/PUBDB-2017-13374] = Masterarbeit, University Of Hamburg, 2017  GO
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2017-12-11
12:08
OpenAccess [PUBDB-2017-13225] Master Thesis
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Transverse Momentum Resummation at Forward Rapidities and Its Applications to LHC Physics
155 pp. (2017) [10.3204/PUBDB-2017-13225] = Masterarbeit, WWU Muenster, 2017  GO
Differential measurements in the LHC precision era require precise theoretical predictions to match.One class of important observables are transverse momentum ($q_T$) distributions of color-singlet final states such as the Higgs boson or Drell-Yan lepton pairs.Related observables are color-singlet production cross sections with a jet veto, e.g. a cut $p_T^\mathrm{jet} < p_T^\mathrm{cut}$ on the transverse momentum of the leading jet.For both cases, well-known factorization theorems exist to describe the cross section at central rapidity or, equivalently, integrated in rapidity.These factorization theorems enable the all-order resummation of Sudakov logarithms induced by initial-state radiation.We show how to systematically extend the known factorization theorems to the region of forward rapidities,where the kinematic constraint induces additional single logarithms of the distance from kinematic endpoint.We identify three different kinematic regimes that lead to distinct factorization theorems,compute all new ingredients at one-loop order, and discuss RG consistency relations in detail.We analyze the matching between regimes and give a novel argument why one set of power corrections vanishes to all orders in the strong coupling, for both $q_T$ and $p_T^\mathrm{cut}$.This provides all ingredients for a NNLL'$+$NNLO $q_T$ ($p_T^\mathrm{cut}$) resummation analysis fully differential in rapidity. [...]
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2017-12-11
10:42
OpenAccess [PUBDB-2017-13186] Master Thesis
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Struktur und Stabilität epitaktischer $CeO_{2}$ Schichten untersucht mit Röntgenbeugung unter streifendem Einfall
114 pp. (2014) [10.3204/PUBDB-2017-13186] = Masterarbeit, University of Hamburg, 2014  GO
Die Struktur und Stabilität unter reduzierenden Bedingungen von 25 nm dünnen, 10 % Gd-dotieren CeO$_2$-Schichten auf Substraten aus Yttrium-Stabilisiertem Zirkonoxid in (110) und (111)-Oberflächenorientierung wurde untersucht. Dieses System ist zum einen für die Anwendung in Brennstoffzellen interessant, zum andern ist es aufgrund der schlechten Verfügbarkeit von CeO$_2$Einkristallen ein geeignetes Modellsystem, um die Vorgänge an der Oberfläche unter Reduktion zu beobachten. [...]
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2017-12-04
11:28
[PUBDB-2017-12711] Report/Master Thesis
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Untersuchung von Spinnenseidenhaftpunkten mit Röntgenstreuung
[I-20150199]
92 pp. (2017) = Masterarbeit, Christian-Albrechts-Universität zu Kiel, 2017

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2017-12-04
08:50
[PUBDB-2017-12691] Master Thesis
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Die chirale Ladungsdichtewelle von Titandiselenid in LEED und ARPES
62 pp. (2016) = Masterarbeit, University of Kiel, 2016

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2017-12-01
11:30
[PUBDB-2017-12656] Master Thesis
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Aufbau und Inbetriebnahme eines doppelseitigen Elektronen- und Ionenspektrometers
77 pp. (2017) = Masterarbeit, University of Hamburg, 2017

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2017-11-30
14:49
OpenAccess [PUBDB-2017-12618] Master Thesis
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Enhanced soft-X-ray high-harmonic generation driven by mid-IR pulses mixed with their third harmonic
120 pp. (2017) [10.3204/PUBDB-2017-12618] = Masterarbeit, Universität Hamburg, 2017  GO
This work is a systematic study of the enhancement of soft-X-ray high-harmonic generation (HHG) driven by two-color (&#969; + 3&#969;) waveforms in argon at different pressures. The observed enhancement due to the two-color driver reaches factors over one order of magnitude when compared to single-color driven HHG. [...]
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2017-11-29
12:42
[PUBDB-2017-12513] Master Thesis
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Model studies on the dehydrogenation of liquid organic hydrogen carriers on model catalyst surfaces by surface infrared reflection absorption spectroscopy and surface x-ray diffraction
93 pp. (2017) = Masterarbeit, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, 2017

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