Essays about: "instabilities in plasma"
Showing result 1 - 5 of 7 essays containing the words instabilities in plasma.
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1. Development of a model for ionospheric instabilities in the equatorial region
University essay from Luleå tekniska universitet/RymdteknikAbstract : This work is part of a bigger project on analyzing the ionospheric dynamics in the equatorial region using simulations. The main objective of this study is to determine and characterize the parameters needed to trigger instabilities and thus the formation of plasma bubbles. READ MORE
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2. Use of the JET pedestal database to assess the role of ion temperature and plasma rotation on the discrepancy between ideal peeling-ballooning model and experimental data
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Next-generation and present fusion devices such as the Joint European Torus (JET) aim for plasma operations in H-mode, a plasma regime with high confinement and low loss of energy and fuel that results from a barrier for heat and particle transport at the plasma edge, the pedestal. Due to steep gradients of the density, temperature and pressure profiles, the pedestal experiences instabilities called Edge-localized-modes (ELMs) which lead to large fluxes of heat and particles that might damage machine components. READ MORE
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3. Čerenkov emission of whistler waves by electron holes
University essay from Uppsala universitet/Institutionen för fysik och astronomiAbstract : Electron holes are positively charged nonlinear structures in which trapped electrons are supported by a positive electrostatic potential. These structure are regularly observed in space and laboratory plasmas by means of diverging bipolar electric field signatures. READ MORE
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4. Ion Cyclotron Resonance Heating in WEST
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : In a fusion power plant the plasma must be confined to prevent instabilities and energy loss. The confinement machine studied is a tokamak. The focus of the project is to optimize ion resonance heating in WEST. READ MORE
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5. Implementation of Fast Real-Time Control of Unstable Modes in Fusion Plasma Devices
University essay from Uppsala universitet/Institutionen för fysik och astronomiAbstract : In recent years, multi-core graphics processing units (GPUs) have been increasingly used by researchers for other purposes than rendering graphics. This thesis presents the implementation of GPU computing for real-time control of plasma instabilities known as resistive wall modes at the EXTRAP T2R fusion plasma device. READ MORE