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Showing 1 to 20 of 42 for “"Plasma and Beam Physics"”.

  1. Identifying Signatures of Plasma Waves and Reconnection Associated with Kelvin-Helmholtz Activity

    … the boundary between the shocked solar wind and magnetospheric plasma. Understanding the dynamics of the plasma processes at the magnetopause boundary is crucial to the study of plasma transport into the magnetosphere. Previous studies have shown that there exists a temperature asymmetry in …

    embry-riddle Repository record for Identifying Signatures of Plasma Waves and Reconnection Associated with Kelvin-Helmholtz Activity (opens in a new tab)

  2. Whistler Waves: Modeling and Observations

    … results of all the research from the published and in publication process research in the Journal of Geophysical Research [1]. This research focuses on whistler wave ducting events in the equatorial magnetosphere. High-density ducts are the main focus of whistler study in both studies as they …

    embry-riddle Repository record for Whistler Waves: Modeling and Observations (opens in a new tab)

  3. Setting Constraints on the Lunar Exosphere: A Comprehensive Analysis of Velocity Resolved Sodium and Potassium Line Profile Measurements

    <p>This dissertation outlines and presents the most comprehensive set of velocity-resolved measurements of sodium D2 (5889.9509 Å) lines taken over multiple lunations spanning seven years (2011 – 2017). These data are used to study the morphology and dynamics of the lunar exosphere. Additionally, …

    embry-riddle Repository record for Setting Constraints on the Lunar Exosphere: A Comprehensive Analysis of Velocity Resolved Sodium and Potassium Line Profile Measurements (opens in a new tab)

  4. Particle swarms in confining geometries

    <p>The transport of micro- and nano-particles in subsurface fluid deposits is an area of increasing interest due to the rising use of these particles for consumer and industrial purposes. Subsurface particle transport is complicated by the presence of fractures and fracture networks which govern …

    purdue-thes Repository record for Particle swarms in confining geometries (opens in a new tab)

  5. Instrument Design Optimization with Computational Methods

    … studied with Computational Fluid Dynamics (CFD) and the simulation results compared to data from the experiment. The 2.5 kW liquid hydrogen target was the highest power LH2 target in the world and the first to be designed with CFD at Jefferson Lab. The first complete magnetic field simulation of …

    odu Repository record for Instrument Design Optimization with Computational Methods (opens in a new tab)

  6. Characterization of a Magnetically Contained Hot Filament Plasma Source with a Wide-Sweeping Langmuir Probe

    <p>Ionospheric plasma research in the Space and Atmospheric Instrumentation Laboratory’s Space Plasma Chamber has been hindered by the lack of a suitable plasma diagnostic instrument and understanding of its hot-filament plasma source. This thesis describes efforts made to remedy both problems. A …

    embry-riddle Repository record for Characterization of a Magnetically Contained Hot Filament Plasma Source with a Wide-Sweeping Langmuir Probe (opens in a new tab)

  7. Optical spectroscopy and langmuir probe diagnostics of microwave plasma in synthesis of graphene-based nanomaterials

    <p>Along with the revolutionary discovery and development of carbon nanostructures, such as carbon nanotubes and graphitic sheets, has arrived the potential for their application in the fields of medicine, bioscience and engineering due to their exceptional structural, thermal and electrical …

    purdue-thes Repository record for Optical spectroscopy and langmuir probe diagnostics of microwave plasma in synthesis of graphene-based nanomaterials (opens in a new tab)

  8. Characterization of Argon and Ar/Cl<sub>2</sub> Plasmas Used for the Processing of Niobium Superconducting Radio-Frequency Cavities

    <p>The plasma processing of superconducting radio-frequency (SRF) cavities has shown significant promise as a complementary or possible replacement for the current wet etch processes. Empirical relationships between the user-controlled external parameters and the effectiveness of Reactive Ion …

    odu Repository record for Characterization of Argon and Ar/Cl<sub>2</sub> Plasmas Used for the Processing of Niobium Superconducting Radio-Frequency Cavities (opens in a new tab)

  9. Langmuir Probe Instrument Suite for Mesosphere Turbulence Experiment Mission

    … probe technique is the predominant in-situ plasma diagnostic technique, and is arguably the only measurement technique that is universally own on every sounding rocket investigation. Earth's mesosphere region (80-120 km) is a host of many dynamic phenomena such as the noctilucent clouds, …

    embry-riddle Repository record for Langmuir Probe Instrument Suite for Mesosphere Turbulence Experiment Mission (opens in a new tab)

  10. Characterization of Microwave Discharge Plasmas for Surface Processing

    … two types of microwave (MW) discharge plasmas: a supersonic flowing argon MW discharge maintained in a cylindrical quartz cavity at frequency ƒ = 2.45 GHz and a pulse repetitive MW discharge in air at ƒ = 9.5 GHz. Low temperature MW discharges have been proven to posses attractive …

    odu Repository record for Characterization of Microwave Discharge Plasmas for Surface Processing (opens in a new tab)

  11. Application of Chebyshev Formalism to Identify Nonlinear Magnetic Field Components in Beam Transport System

    … conducted at Jefferson Lab's Continuous Electron Beam Accelerator Facility to develop a beam-based technique for characterizing the extent of the nonlinearity of the magnetic fields of a beam transport system. Horizontally and vertically oriented pairs of air-core kicker magnets were …

    odu Repository record for Application of Chebyshev Formalism to Identify Nonlinear Magnetic Field Components in Beam Transport System (opens in a new tab)

  12. Study of Plasmonic Properties of the Gold Nanorods in the Visible to Near Infrared Light Regime

    … study we have investigated optical enhancement and absorption of gold nanorods with different thickness using finite element method simulations. This study reports on the resonance wavelength of the sharp-corner and round-corner rectangles of constant length 100 nm and width 60 nm. The result …

    arkansas Repository record for Study of Plasmonic Properties of the Gold Nanorods in the Visible to Near Infrared Light Regime (opens in a new tab)

  13. A 3-D Model of the Auroral Ionosphere

    … of the ionosphere with the magnetosphere and neutral atmosphere. The model consists of equations describing conservations of mass, momentum and energy for the six ionospheric constituents (O+, NO+, N+2 , O+2 , N+ and e-) and an electrostatic potential equation. This 3-D model is used to …

    embry-riddle Repository record for A 3-D Model of the Auroral Ionosphere (opens in a new tab)

  14. Integrated broadband microphotonic beamformer for adaptive nulling in smart antennas

    … growth of the wireless communications sector and the problem of limited available spectrum that can be used to cater the wireless demand have spurred the need for better data transmission capacity and signal rates for wireless communication systems. Smart antennas are the promising technology …

    edithcowan Repository record for Integrated broadband microphotonic beamformer for adaptive nulling in smart antennas (opens in a new tab)

  15. Large-Angle Beamstrahlung: Simulation And Diagnostics

    <p>LARGE-ANGLE BEAMSTRAHLUNG: SIMULATION AND DIAGNOSTICS</p> <p>by</p> <p>RYAN S. GILLARD</p> <p>May 2014</p> <p>Advisor: Dr. Giovanni Bonvicini </p> <p>Major: Physics </p> <p>Degree: Doctor of Philosophy </p> <p> Luminosity is paramount in high energy physics research, therefore it is critical to …

    wayne-thes Repository record for Large-Angle Beamstrahlung: Simulation And Diagnostics (opens in a new tab)

  16. BEAMED: A Bench for Automated Measurements of Electrical Discharges - A New Standard for Paschen Curves

    … discharges, plays a significant role in industry and environmental science, affecting systems such as electronics, power grids, and atmospheric phenomena. Despite extensive studies and applications of Paschen's law, current methodologies for experimental Paschen tests in direct current (DC) …

    embry-riddle Repository record for BEAMED: A Bench for Automated Measurements of Electrical Discharges - A New Standard for Paschen Curves (opens in a new tab)

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