Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"Azimuthal symmetry"”.
-
Fermion Quantum Field Theory In Black-hole Spacetimes
… be found, for such stationary spacetimes with azimuthal symmetry. These modes are then employed for the purposes of a canonical quantisation of the corresponding fermionic theory. At the same time, we suggest that it may be impossible to extend a quantum field theory continuously across an …
-
A 140 GHz gyro-amplifier using a confocal waveguide : theory and experimental results
… calculating the linear and nonlinear gain of the azimuthally asymmetric confocal modes that interact with the electron beam with an annular distribution of electron guiding centers. This code has been successfully benchmarked against the code MAGY for azimuthally symmetric cases, and extends the …
-
Simulation and microwave measurement of the conductivity of carbon nanotubes
… finite difference algorithm exploiting the azimuthal symmetry. A solution to the Schrodinger‟s equation is required to obtain the wavefunctions within the nanotube model. This is implemented with the scattering matrix method. The resulting wavefunctions defined on the nanotube surface are …
-
Integrated fuel performance and thermal-hydraulic sub-channel models for analysis of sodium fast reactors
… codes include the following. The importance of azimuthal effects in the fuel pin: FEAST only evaluates the fuel in two-dimensions, assuming azimuthal symmetry; however, coupling to COBRA produces an azimuthal temperature distribution. The acceptability of assuming a two-dimensional fuel rod with …
-
A Computational Framework for Dimensionally Reduced Particle Dynamics in Magnetic Nozzle Fields: An Adiabatic Invariant Approach
This thesis investigates a dimensional reduction strategy for modeling charged particle trajectories in electromagnetic fields representative of magnetic nozzle expansion regions. By employing Julia’s DifferentialEquations.jl and Python’s scientific libraries, particle trajectories are integrated …