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 208 for “"Pinch"”.
-
Supersonic self-similar screw-pinch plasma implosions
… 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 with a diffuse current profile. Four separate plasma …
-
Production of high pressures with a magnetic pinch.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1968.
-
Axial Evolution of a Sheared-Flow-Stabilized Z Pinch
The Fusion Z-pinch Experiment (FuZE) is a sheared-flow-stabilized Z pinch based on the ZaP and ZaP-HD experiments. The FuZE device generates neutron-producing, 50-cm-long Z pinches formed from plasma accelerated through coaxial electrodes. The Z pinches are sustained between a nose cone at the tip …
-
Oscillating Field Current Drive in the Reversed Field Pinch
Oscillating Field Current Drive (OFCD) was originally proposed as a means of maintaining a quasi steady-state plasma current in a RFP without building up the magnetizing flux threading the central hole of the torus. The MHD dynamics of OFCD is analyzed using a combination of a 1-D transport code, a …
-
Stable Alfven Wave Dynamo Action in the Reversed Field Pinch
… discharge times observed in the reversed field pinch. This thesis examines the dynamo action of stable Alfven waves as a means of generating toroidal flux, (PHI)(,z). Recent advances in linear resistive MHD stability analysis are used to calculate the quasi-linear dynamo mean electromotive …
-
Tearing-mode transport model in the reversed field pinch concept
… the transport performance of a Reversed Field Pinch (RFP)-type of thermonuclear fusion reactor has been developed. The study has been focused on determining equilibrium configurations which describe a plasma evolution dominated by particular instabilities originated by plasma electrical …
-
ROLE OF PINCH IN ABERRANT TAU PHOSPHORYLATION IN HIV CNS DISEASE
… neurodegeneration and HIV involving the PINCH protein. Particularly interesting new cysteine histidine-rich protein (PINCH), an adaptor protein in neuronal cells is involved in cytoskeletal organization, cell migration and cell survival. While some of the pathophysiological aspects of the …
-
Energy deposition into heavy gas plasma via pulsed inductive theta-pinch
… energy into plasma via formation in a theta pinch coil. To aid in this research, the Missouri Plasmoid Experiment Mk. I (and later Mk. II) was created.</p> <p>In the first paper, the construction of differential magnetic field probes are discussed. The effects of calibration setup on B-dot …
-
Design and Characterization of a Theta Pinch Discharge for Atomic Emission Spectroscopy
… to directly sample solid materials. A theta pinch discharge was designed and constructed to create this magnetically compressed plasma. In the theta pinch geometry, magnetic compression is achieved by a pulsed, high current discharge through a coil. The coil encloses an insulated discharge …
-
Studies on Hydrogen-Pinch Analysis and Application of COSMO-SAC to Electrolytes
… process system engineering studies: (1) hydrogen pinch analysis; and (2) application of COSMO-SAC (conductor-like screening model – segment activity coefficient) to electrolytes. Part (1) presents an automated spreadsheet method that can quickly help minimize fresh hydrogen consumption and …
-
An Investigation of Tungsten-Based Z-Pinch Planar Wire Array and Benchmarking Experiments
Wire array z-pinches provide an accessible means to research plasmas of high density and temperature and have valuable applications in the fields of inertial confinement fusion (ICF),astrophysics, and radiation studies. The purpose of this work is tungsten/aluminum z-pinch study and to aid in the …
-
Radial Electric Fields from Larmor Radius Effects in the Field-Reversed Theta Pinch
Made available in DSpace on 2017-07-06T18:48:37Z (GMT). No. of bitstreams: 3 Hu_Yuan_MS.pdf: 22313721 bytes, checksum: baf5783a195404ec322630d9dd3daae0 (MD5) Hu_Yuan_MS_ABS.pdf: 483756 bytes, checksum: bd4f2ed9f5673c6f0e126ccbee133e0a (MD5) license.txt: 4813 bytes, checksum: …
-
Development of a Theta Pinch Discharge as a Sampling Source for Refractory Solids
The development of a previously designed theta pinch discharge was undertaken in order to improve its ability to sample solid materials. Of primary interest were nonconducting and refractory solids.
-
Theoretical and Experimental Studies of Radiation from Z-Pinch Complex Wire Arrays and Applications
… higher efficient radiators, particularly in z-pinch plasmas, and their applications. This goal is a major focus of this dissertation and implements both theoretical and experimental tools in the process. The theoretical tools involve the Wire Ablation Dynamics Model (WADM) to infer z-pinch …
-
Particle-in-Cell Simulations Examining AK Gap Closure Mechanisms in the Pinch Reflex Diode
Gap closure mechanisms in the pinch reflex diode are studied using cylindrical, two-dimensional, fully kinetic, electromagnetic, particle-in-cell simulations. The key physical dimensions in the model are based on the Mercury accelerator at the Naval Research Laboratory in Washington, DC. Simulation …
-
Studies of the Stability of a Fusion Burn in a Reversed Field Pinch Device
Made available in DSpace on 2017-07-06T18:58:57Z (GMT). No. of bitstreams: 2 Stimpson_Helen_R_S_MS.pdf: 21419808 bytes, checksum: d12bd3cf91f42d6cae9c8f5bc6804905 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1977
-
Embeddable micro pinch valve for localized pressure control on modular pneumatic soft robotic arm
… and size, we designed the embeddable micro pinch valve (EMPV) that is light (< 2.5 g) and small (< 2 cm3) enough to be built into a typical soft pneumatic actuator. An EMPV manipulates the flow going into (or out from) the actuator by externally squeezing the channel that connects the …
-
Pre-ionization studies on the modular theta-pinch experiment for field-reversed configuration applications
… breakdown studies conducted on the Modular Theta-pinch eXperiment (MTX). Observations made of inductively-coupled breakdown behaviour are consistent with the model's expectations, indicating that the model can be used to aid in design of inductively-coupled pre-ionization systems. The model is …
Page 1 of 11