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Showing 1 to 16 of 16 for “"axial magnetic field"”.
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Melt motion in floating-zone process for single crystal growth with an axial magnetic field
… in the floating-zone process with an applied axial magnetic field, for a dislocation-free single crystal, is studied by using asymptotic expansion. Centrifugal force, crystal growth speed, buoyancy, thermocapillarity and electromagnetic body force are the driving forces involved in the …
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Multi-Scale Model of the Stability of a Laterally Heated Liquid Bridge Under the Influence of an Axial Magnetic Field
… the crystal. This study investigates the use of magnetic fields in suppressing these instabilities. When a crystal is grown in the presence of a magnetic field, electric currents are generated in the conducting melt. These currents interact with the magnetic field, producing Lorentz body forces, …
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Supersonic self-similar screw-pinch plasma implosions
… supersonic compression of a plasma containing an axial current and an entrained axial magnetic field (screw-pinch). These solutions represent a complete generalization of previous works done on the Z-pinch and $\Theta$-pinch schemes. The solutions presented herein represent a screw-pinch plasma …
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Magnetic fluid flow phenomena in DC and rotating magnetic fields
An investigation of magnetic fluid experiments and analysis is presented in three parts: a study of magnetic field induced torques in magnetorheological fluids, a characterization and quantitative measurement of properties relating to the transition of a ferrofluid drop from a continuous phase into …
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X Ray Analysis of a Dense Plasma Focus
… seeded neon discharges. The addition of an axial magnetic field to stabilize the focus pinch was found to have beneficial effects on the X-ray emission in terms of reliability and improved source geometry.
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The superconducting penetration depth in thin films of lead
We measured the attenuation of an axial magnetic field by cylindrical thin films of superconducting lead. We also measured the normal-state resistance of the same films. The magnetic field was measured by using a superconducting magnetometer. From the temperature dependence of the normalstate …
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Magnetohydrodynamic Simulations of Fast Instability Development in Pulsed-Power--Driven Explosions and Implosions of Electrical Conductors
… liner experiments without a pre-imposed axial magnetic field (Bz=0) elsewhere in the literature and are believed to be seeded from surface machining roughness. This dissertation uses highly resolved (0.5 μm and less resolution) 1D and 2D resistive magnetohydrodynamics (MHD) …
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3D ICEPIC simulations of pulsed relativistic magnetron with transparent cathode : a comparative study with 3D MAGIC simulations
… current, and leakage current with respect to the axial magnetic field were compared. ICEPIC simulations were run on a parallel architecture with 64 CPUs at a grid resolution of 1mmx 1mmy 1mmz in the 3-dimensional Cartesian coordinate system. These simulations consisted of roughly 6 million active …
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Magnetophoretic cell clarification
… around a central column to create areas of high magnetic field at the column walls and areas of low magnetic field at the centerline, inducing non-magnetic particles to concentrate at the centerline, where they were removed through a coaxial central outlet tube at the top of the column. Depending …
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Electromagnetic penetration depth in superconducting alloys containing magnetic impurities
Measurements of the attenuation of an axial magnetic field by cylindrical, thin, superconducting films were made by using a SQUID-based magnetometer. The sample films were between 40 and 85 A thick. They were composed of indium and of indium containing a small amount of gadolinium. Each film was …
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Investigating temperature distributions and thermal conduction effects in laser-heated plasmas relevant to Magnetized Liner Inertial Fusion
… experimental parameters such as an external magnetic field, beam smoothing, and the laser pulse shape, affect the laser heating. Additionally, the spectrum and image data from magnetized and unmagnetized experiments have been included in a multi-objective analysis driven by a Pareto genetic …
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Multiphysics modeling, study, and analysis of atmospheric pressure plasma-based mass separation system for high-level radioactive waste treatment
… (BGIMF) states that using a combination of an axial magnetic field and a radial or azimuthal electric field, the ions in a plasma can be radially separated according to mass. Mass separation frequently takes place in a high vacuum environment. An atmospheric pressure plasma mass separator may …
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On the modelling and consequence of small-scale magnetic phenomena in the Saturnian system
… radial distance. Additionally, values of the magnetic field in the lobes are found using the model, which are then used along with the scale heights to estimate the current density in the azimuthal and radial directions. These values can also be used to calculate, using the divergence of …
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Helical magnetorotational instability in MHD Taylor-Couette flow
… cylinders in the presence of an external magnetic field was analyzed. The central conclusion is that the additional magnetic field parallel to the axis of rotation can destabilize otherwise stable flow. Theory of non-magnetized fluid motion between rotating cylinders has much longer …
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Three-dimensional modeling of plasma transport in the HIDRA stellarator
… tools currently in use focus on tokamak magnetic geometries or high-power, fully-ionized devices, necessitating the creation of an integrated suite of codes to handle partial ionization with more disparate operational power conditions and classical diffusivity unique to HIDRA in …
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Two-dimensional periodic surface lattice high power millimetre wave experiment
… has on the coupling of the surface and volume fields.;By comparing the measured transmission of millimetre waves through the four copper 2D PSLs with different amplitude of corrugations it was shown that an increase in the peak-to-peak perturbation amplitude resulted in excitation of surface …