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Showing 1 to 20 of 45 for “"plasma-jet"”.
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Optical characterisation of a low temperature plasma jet
Low temperature plasma jets are of particular interest due to their unique way of producing reactive species even at room temperature and atmospheric pressure. They therefore have the potential to be used for various applications, in plasma medicine and surface modification in particular. The …
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Physics and application of an atmospheric pressure plasma jet
Non-thermal atmospheric pressure plasma jets are a promising new field of research which are beneficial to many associated technologies, such as material treatment and biomedical applications. The interest in this type of plasma lies in their ability to deliver significant densities of reactive …
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Electron Distributions in a Plasma Jet at Low Pressure
Made available in DSpace on 2014-12-05T19:16:02Z (GMT). No. of bitstreams: 1 6303248.pdf: 4837178 bytes, checksum: 85c0ec58a4c0aa500fe5adde7f6826c2 (MD5) Previous issue date: 1962
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Measuring the Ion Temperature of a Plasma Jet Undergoing Instability-Driven Heating
… arrangements to measure the ion temperature of a plasma jet undergoing instabilities and an examination of experiment findings. The jet, formed by puffing a controlled amount of Nitrogen or Argon gas into Embry-Riddle's cylindrical vacuum chamber and then ionizing it via high-voltage …
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Exploring approaches to functional surface modifications using an atmospheric plasma jet printer
Atmospheric plasma jet printing is an exciting technology which uses plasma generated under atmospheric conditions to excite, ionize, and induce chemical interactions between the plasma and materials. The aim of this work is to use an atmospheric plasma jet printer to create highly functional, …
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Sensitivity Analysis and Uncertainty Quantification of Plasma Jet Instabilities in the VKI Plasmatron
The VKI’s Plasmatron facility can reproduce the high-enthalpy gas flow encountered during the entry of a spacecraft into a planetary atmosphere and thus allows to test thermal protection materials used for the heat shield of the vehicle. However, the jet generated by the facility undergoes …
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Supersonic cooling of short-lived molecular states in a pulsed microcavity plasma jet
… as short as 19 ns have been generated in a micro-plasma jet at super-atmospheric pressure and rotationally cooled by supersonic expansion. Spatial-temporal spectrograms of d^3Σ+u→(b^3)π_g (v', v"") = (0, 0) emission are obtained, which contain the information about the dynamic cooling process …
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Development of low coast atmospheric pressure plasma jet for nano and bio technology applications
The development of cold atmospheric plasma (CAP) can overcome many limitations of low pressure plasma. Low temperature plasma is widely used in the semiconductor and medical industry for cleaning purposes. However, the process is time consuming because low pressure plasma requires vacuum …
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Rayleigh—Taylor-Instability Evolution in Colliding-Plasma-Jet Experiments with Magnetic and Viscous Stabilization
The Rayleigh—Taylor instability causes mixing in plasmas throughout the universe, from micron-scale plasmas in inertial confinement fusion implosions to parsec-scale supernova remnants. The evolution of this interchange instability in a plasma is influenced by the presence of viscosity and magnetic …
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Functional coatings deposited by an Atmospheric Pressure Plasma Jet (APPJ) system over Thermoplastic Elastomer (TPE) substrates
… heat-sensitive material, an Atmospheric Pressure Plasma Jet (APPJ) system with a Dielectric Barrier Discharge (DBD) was used in this thesis. During the first group of scientific publications, with the objective of reducing the friction coefficient of TPE, the siloxane, aminopropyltriethoxysilane …
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Formation and extraction of a dense plasma jet from a helicon-plasma-injected inertial electrostatic confinement device
… modes of operation for the confinement of plasma. Although the symmetric grid star-mode is the most often studied for its application to fusion, the asymmetric grid jet-mode has its own potential application for electric space propulsion. The jet-mode gets its name from the characteristic …
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NO<sub>x</sub> reduction for natural gas engines with increased ignition energy and plasma jet ignitors
Five plasma jet ignitor designs were tested on a Waukesha ASTM-CFR engine fueled with natural gas. The pollutant emissions, fuel and air flow rates and dynamic cylinder pressure were measured for the full range of Air/Fuel ratios. From these measurements the indicated power and specific fuel …
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Experimental Characterization of Diffusive Phenomena in Multi-Ion-Species Plasma Shocks Formed During Railgun-Driven Plasma Jet Collision Events
… is a transport process which can occur in plasma shocks. Experimental observations of this phenomena are difficult to make, but are of interest to ongoing Inertial Confinement Fusion efforts. This body of work describes the results of two major experimental campaigns conducted at Virginia …
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From Surface Activation to Delamination Resistance: Nitrogen Atmospheric Pressure Plasma Jet Effects on Unidirectional Carbon Fiber Composites for Sustainable Mobility Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Operation of a High-Pressure Uncooled Plasma Torch with Hydrocarbon Feedstocks
… main scope of this project was to determine if a plasma torch could operate on pure hydrocarbon feedstocks and, if so, to catalogue the torch operational characteristics. The future goal of the project is to design a plasma torch for supersonic combustion applications that operates off of the …
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Revestimentos a base de Ta/Al2O3 produzidos por aspersão térmica sobre substrato metálico
Metal substrates were coated by thermal spraying plasma torch, they were positioned at a distance of 4 and 5 cm from the nozzle exit of the plasma jet. The starting materials were used for deposition of tantalum oxide powder and aluminium. These two materials were mixed and ground into high-energy …
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Self-generated magnetic fields in intense laser-solid interactions relevant to relativistic plasma astrophysics
… in ultra-intense laser interactions with dense plasma and the role that these play in the dynamics of relativistic electrons, and, subsequently, ion acceleration. This includes an investigation of resistive magnetic fields generated within solids and their influence on the transport of …
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Design of Optical Measurements for Electrothermal Plasma Discharges
Ablation controlled electrothermal (ET) plasma discharge devices consist of a small diameter capillary through which a large amount of energy is discharged. The high energy in the discharge ablates an inner sleeve material, ionizes the material, and a high energy-density plasma jet accelerates out …
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