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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 80 for “"ion-cyclotron"”.
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Dispersion of Ion Cyclotron Waves in Magnetoplasmas
Made available in DSpace on 2014-12-04T21:03:21Z (GMT). No. of bitstreams: 1 6104289.pdf: 3615786 bytes, checksum: a417fd7c861925d1016c4c824958f99f (MD5) Previous issue date: 1961
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Mass spectroscopy using single ion cyclotron resonance
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1990.
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Improved single ion cyclotron resonance mass spectroscopy
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1993.
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Advancing Ion Cyclotron Resonance Heating with improved simulations and novel antenna concepts
L'abstract è presente nell'allegato / the abstract is in the attachment
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Ion Cyclotron Resonance Heating Induced Transport in Stellarators and Other Asymmetric Toroids
A Monte Carlo simulation is developed to model minority ion transport and fundamental ion cyclotron resonance heating (ICRH) in asymmetric magnetic field geometries. A discrete event model is used to superimpose resonance heated nonadiabatic changes in an ion's magnetic moment on a Coulomb …
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Fast wave ion cyclotron resonance heating experiments on the Alcator C tokamak
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988.
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Numerical Simulation of Ion-Cyclotron Turbulence Generated by Artificial Plasma Cloud Release
… plasma. The released plasma clouds are heavy ions which have ring velocity distribution and large free energy to drive the turbulence. An electromagnetic hybrid (fluid electrons and particle ions) model incorporating electron inertia is developed to study the generation and nonlinear evolution …
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Kinetic characterization of enhanced impurity sputtering due to ion cyclotron radio-frequency heating
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Experimental and numerical characterization of ion-cyclotron heated protons on the Alcator C-Mod tokamak
… in Alcator C-Mod plasmas with the application of ICRF. A new multi-channel Compact Neutral Particle Analyzer is used to make measurements of these distributions in Alcator C-Mod's unique and reactor-relevant operating space via an active charge-exchange technique (CX). Using a detailed …
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Numerical analysis of radio-frequency sheath-plasma interactions in the ion cyclotron range of frequencies
Electromagnetic plasma waves in the ion cyclotron range of frequencies (ICRF) are routinely used in magnetic fusion experiments to heat plasmas and drive currents. However, many experiments have revealed that wave energy losses in the plasma edge and at the wall are significant, and detected that …
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Ion-Cyclotron Resonance Heating of O+ in the Topside Ionosphere and Mapping Outflows to the Magnetosphere
<p>This thesis considers the heavy ion dynamics due to ion-cyclotron resonance energization processes that take place in the turbulent region of the Earth’s topside, high latitude ionosphere. We simulate the impact of this transverse heating process upon energies and velocity distribution functions …
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Electrospray Fundamentals and Non-Covalent Peptide-Lipid Interactions as Studied by Fourier Transform Ion Cyclotron Reonance Mass Spectrometry
… built, and used to characterize the distribution in solution potential within the metal capillary and Taylor cone of the electrospray (ES) device. Results show that the measured potential difference increases as the internal probe travels toward the ES capillary exit, with values rising …
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Controlled precipitation of energetic Van Allen belt protons by electromagnetic ion cyclotron (EMIC) waves : scientific and engineering implications
The inner Van Allen radiation belt traps highly energetic protons sourced from solar storms, cosmic rays and other processes. These particles can rapidly damage the space systems orbiting the inner region, limiting access to Low Earth Orbit (LEO). Decades of modeling and observations, however, show …
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Characterization of Cucurbituril Complex Ions in the Gas Phase Using Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
<p>Host-guest interactions have been well studied in the new century to obtain fundamental insights into supramolecular chemistry. Most of the pioneering works have been done using techniques such as NMR, X-ray crystallography, IR spectroscopy and so on. However, none of these techniques is …
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Profiling the metabolome using Fourier transform ion cyclotron resonance mass spectrometry, optimised signal processing, noise filtering and constraints methods
… profiling, a process involving the identification of metabolites present in biological samples, by applying Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Three novel methods were developed to improve the quality of mass spectra and their interpretation. The first, …
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Design of the First Analytical Platform for Automated Top Down Proteomics With quadrupole/Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
… FT mass spectrometer. It outlines a two dimensional separations platform that utilizes a 96 well plate nanospray robot to facilitate automated analysis on the mass spectrometer. This thesis also highlights instrument advancements required to improve throughput for observation of protein intact …
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Investigations of biological interactions by hydrogen deuterium exchange Fourier transform ion cyclotron mass spectrometry: novel methods, automated analysis and data reduction
… is used to investigate biological interactions by Fourier transform ion cyclotron resonance mass spectrometry (FTICR MS). For the first time, a series of oligonucleotides of varying length are interrogated by negative mode gas phase H/D exchange. Data presented describes the reactivity of …
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Investigation of plasma potential enhancement in the scrape-off layer of ion cyclotron range of frequencies heated discharges on Alcator C-Mod
… the core plasma performance. RF sheath rectification on open magnetic field lines that intercept material surfaces is currently suspected of causing an enhancement of molybdenum impurity sources by increasing the energy with which incident plasma ions strike material surfaces. While it has …
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