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 20 of 37 for “"Strong Magnetic Fields"”.
-
An investigation of electromagnetic rig-generated strong magnetic fields
… coils were designed to be capable of generating strong and static magnetic fields in various samples of magnetic materials. In the case of the first design, the sample would be placed in the central air space. In the second design, the sample would be placed in part of the 'jaws' of the 'C' …
-
Shock Waves in Gas and Plasma in Strong Magnetic Fields
… gas and plasma in externally applied megagauss magnetic fields, a strong field regime not tested before. Experiments were performed at the Nevada Terawatt Facility(NTF). The platform uses the approximately 30 J, 0.35 ps-0.8 ns, 1056 nm Leopard laser focused onto 1-2.5 mm Cu rod loads positioned …
-
New features in the phase diagrams of the cuprate high-Tc superconductors mapped using strong magnetic fields
… the cuprate high-Tc superconductors using high magnetic field electrical transport measurements. These discoveries attempt to address two central questions pertaining to how the physics of the cuprate high-Tc superconductors evolve as a function of both temperature and hole-doping. The first …
-
Combined analytical and numerical solutions in liquid metal flows in a rectangular duct with uniform or non-uniform, strong magnetic fields
… flows in self-cooled liquid-lithium blankets for magnetic-confinement fusion reactors, liquid metal flows in rectangular ducts with thin conducting walls have been treated by combining analytical methods and numerical solutions. An asymptotic method has been used in the linear stability analysis …
-
Hall Effect Modeling in FEM Simulators and Comparison to Experimental Results in Silicon and Printed Sensors
… data in order to understand their behavior under strong magnetic fields. Given a device geometry and charge carrier density and mobility, the models accurately calculated sensor resistance, Hall voltage under a normally-incident constant magnetic field, and expected offset from a population of …
-
Micron precision calibration methods for alignment sensors in particle accelerators
… to withstand a highly radioactive environment,strong magnetic fields and cannot be returned for check and calibration to the manufacturer once exposed to radiation. In order to validate the sensors before their installation in the tunnel, to check them within their measurement system and for …
-
Physics under extreme conditions: Magnetized atoms and hot dense plasmas
… conditions, encompassing isolated atoms in very strong magnetic fields and the behavior of the electron gas near its crystallization point. For the atoms we consider a range of theoretical approaches, from mean field theory (Hartree-Fock) to an exact method using stochastic random walks …
-
Physics under extreme conditions: Magnetized atoms and hot dense plasmas
… conditions, encompassing isolated atoms in very strong magnetic fields and the behavior of the electron gas near its crystallization point. For the atoms we consider a range of theoretical approaches, from mean field theory (Hartree-Fock) to an exact method using stochastic random walks …
-
Supernova-driven turbulence and magnetic field amplification in disk galaxies
… in the interstellar medium. Yet, their effect on magnetic field amplification in spiral galaxies is still poorly understood. Analytical models based on the uncorrelated-ensemble approach predicted that any created field will be expelled from the disk before a significant amplification can occur. …
-
Modeling Magnetic Field Amplification in Nonlinear Diffusive Shock Acceleration
… by the recent observations indicating very strong magnetic fields at some supernova remnant shocks, which suggests in-situ generation of magnetic turbulence. The dissertation presents a numerical model of collisionless shocks with strong amplification of stochastic magnetic fields, …
-
External Fields in Holography Near and Far from Equilibrium
… the still ill understood behavior of electromagnetic fields on thermalizing matter in heavy ion collisions. This topic is considered in the context of charged strongly coupled supersymmetric conformal field theory subjected to strong external fields evaluated in thermal states. I begin by …
-
Thermoelectric Magnetohydrodynamic Flows During Various Crystal Growth Processes With an Externally Applied Magnetic Field
… for Bridgman and float zone processes with strong fields. The azimuthal motion dominates the melt motion. As the magnetic field strength is increased from zero to large values, the azimuthal and meridional motions first increase from zero to maxima and then decay back toward zero for very …
-
Simultaneous extraction of order parameters and orientational distribution fuctions from 31[superscript]P NMR spectra of magnetically partially oriented phospholipid bilayers
… vesicles are known to deform and orient in the strong magnetic fields of NMR magnets, producing non-spherical orientation distributions. A recently developed technique for simultaneously extracting the anisotropies of the system as well as the orientation distributions is applied to the analysis …
-
Fully kinetic modeling of a divergent cusped-field thruster
… a divergent cusped-field thruster is discussed. Strong magnetic fields in the cusps (B0.5 T) necessitate using a time step on the order of a picosecond in order to resolve electron cyclotron trajectories. As a result, successfully completing a divergent cusped-field thruster simulation with the …
-
From Large-scale Molecular Clouds to Filaments and Cores : Unveiling the Role of the Magnetic Fields in Star Formation
I present a comprehensive study of the role of strong magnetic fields in characterizing the structure of molecular clouds. We run three-dimensional turbulent non-ideal magnetohydrodynamic simulations (with ambipolar diffusion) to see the effect of magnetic fields on the evolution of the column …
-
Polarized Radiative Transfer in the Magnetospheres and Atmospheres of Neutron Stars
Neutron stars are sources of strongly polarized emission in X-rays or soft gamma-rays due to the presence of strong magnetic fields. Radiation transport of soft X-rays in neutron star surface layers is critical to the determination of the emergent anisotropy of light intensity and polarization …
-
Superlattices and quantum spin Hall states in graphene and hexagonal boron nitride heterostructures
… in graphene, especially in the presence of strong magnetic fields and electron-electron interactions. By applying a strong tilted magnetic field to graphene which is decoupled from its hBN substrate, we are able to realize a quantum spin Hall state and measure its electronic properties. An …
-
Search and characterization of pulsars in southern globular clusters: new methodologies and results from an S-band survey
… study provides insight into ultra-dense matter, strong magnetic fields, and relativistic gravity. Beyond their intrinsic interest, pulsars serve as powerful tools for precision astrophysics. Their stable emission enables tests of fundamental physics, studies of stellar evolution, and probes of …
-
Disk-magnetosphere interaction in X-ray binaries
Binary X-ray pulsars are strongly magnetic neutron stars accreting matter from a companion star. The strong magnetic fields of the neutron stars guide the accreting plasma to the magnetic poles, and X-ray pulsations result from the rotation of the beamed emission at the magnetic poles through the …
-
Quantum states on spheres in the presence of magnetic fields
… two-dimensional geometries in the presence of strong magnetic fields has proven vital to the theoretical understanding of the quantum Hall effect. In particular, Haldane’s seminal study of quantum states on the surface of a compact geometry, the sphere, in the presence of a monopole magnetic …
Page 1 of 2