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Nonequilibrium Atmospheric Pressure Plasma Jets
Nonequilibrium atmospheric pressure plasma jets (N-APPJs) generate plasma in open space rather than in a confined chamber and can be utilized for applications in medicine. This book provides a complete introduction to this fast-emerging field, from the fundamental physics, to experimental approaches, to plasma and reactive species diagnostics. It provides an overview of the development of a wide range of plasma jet devices and their fundamental mechanisms. The book concludes with a discussion of the exciting application of plasmas for cancer treatment. The book provides details on experimental methods including expert tips and caveats. covers novel devices driven by various power sources and...
The Modelling and Characterization of Dielectric Barrier Discharge-Based Cold Plasma Jets
Non-equilibrium atmospheric pressure plasma jets (APPJs) are of intense interest in current low-temperature plasma research because of their immense potential for material processing and biomedical applications. Depending on the jet configuration and the electrical excitation, plasma characteristics including heat, charged particle, electric field, and chemically active species may differ significantly. Other important parameters of importance in these studies are the kind of utilized working gas and gas flow rate. This book presents the electrical characterization of DBD-based APPJs for three electrode arrangements: ring electrode, pin electrode and floating helix electrode configurations. The analysis presented here will serve to help in establishing an optimum range of operation for a cold plasma jet without arcing and without any physical damage to the electrodes. Furthermore, the experimental results provided in the book establish the significance of the type of working gas on the power consumption and on the jet length obtained. These developed cold DBD-based APPJs of larger lengths may be useful for diverse biological applications and surface treatments.
High Temperature Dust Laden Jets in Plasma Technology
The demand of industry for new composite and functional materials with preset properties has led to increased investigations into processes which occur in plasma jets of complex chemical composition with an additive to disperse particles as well as at their interaction with hard surfaces under the conditions of superfast cooling of the particles which are in complex aggregation state. This Proceedings Volume contains the papers that were presented during the International Workshop ''High-Temperature Dust-Laden Jets in the Processes of Treatment of Powder Materials'', held in Novosibirsk, USSR, 6--8 September 1988. The scope of the Workshop incorporated the following topics: -- Modelling of the processes of interphase momentum, heat and mass transfer in dust-laden plasma jets as well as interaction between the particles which are in complex aggregation state and the base. -- Diagnostics of the parameters of gas disperse phases in high-temperature dust-laden flows. -- Processes of the formation of plasma sprayed coatings. -- Processes of treatment and production of powder materials.
Plasma Jets in the Development of New Materials Technology
The demands of industry for creating new functional materials with predetermined properties have stimulated an increasing interest in the investigation of processes occurring in plasma jets of complex chemical composition (homogeneous and heterogeneous) as well as their interaction with hard surfaces. This Proceedings volume contains contributions from leading international specialists on plasma science and technology which were presented at the 2nd International Workshop ''Plasma Jets in the Development in of New Materials Technology'', 3--9 September 1990, Frunze (USSR). The scope of the workshop incorporated the following aspects: modelling of the processes of momentum heat and mass transfer in homogeneous and heterogeneous plasma jets as well as interaction between the particles and the base; diagnostics of the parameters of gas and disperse phases in plasma flows; plasma-spraying processes investigations; processes of treatment and production of materials, including powder materials.
Plasma Jets in the Development of New Materials Technology
The demands of industry for creating new functional materials with predetermined properties have stimulated an increasing interest in the investigation of processes occurring in plasma jets of complex chemical composition (homogeneous and heterogeneous) as well as their interaction with hard surfaces. This Proceedings volume contains contributions from leading international specialists on plasma science and technology which were presented at the 2nd International Workshop ''Plasma Jets in the Development in of New Materials Technology'', 3--9 September 1990, Frunze (USSR). The scope of the workshop incorporated the following aspects: -- modelling of the processes of momentum heat and mass transfer in homogeneous and heterogeneous plasma jets as well as interaction between the particles and the base; -- diagnostics of the parameters of gas and disperse phases in plasma flows; -- plasma-spraying processes investigations; -- processes of treatment and production of materials, including powder materials.
The Modelling and Characterization of Dielectric Barrier Discharge-Based Cold Plasma Jets
Non-equilibrium atmospheric pressure plasma jets (APPJs) are of intense interest in current low-temperature plasma research because of their immense potential for material processing and biomedical applications. Depending on the jet configuration and the electrical excitation, plasma characteristics including heat, charged particle, electric field, and chemically active species may differ significantly. Other important parameters of importance in these studies are the kind of utilized working gas and gas flow rate. This book presents the electrical characterization of DBD-based APPJs for three electrode arrangements: ring electrode, pin electrode and floating helix electrode configurations. The analysis presented here will serve to help in establishing an optimum range of operation for a cold plasma jet without arcing and without any physical damage to the electrodes. Furthermore, the experimental results provided in the book establish the significance of the type of working gas on the power consumption and on the jet length obtained. These developed cold DBD-based APPJs of larger lengths may be useful for diverse biological applications and surface treatments.
Plasma Jets in the Development of New Materials Technology
The demands of industry for creating new functional materials with predetermined properties have stimulated an increasing interest in the investigation of processes occurring in plasma jets of complex chemical composition (homogeneous and heterogeneous) as well as their interaction with hard surfaces. This Proceedings volume contains contributions from leading international specialists on plasma science and technology which were presented at the 2nd International Workshop ''Plasma Jets in the Development in of New Materials Technology'', 3--9 September 1990, Frunze (USSR). The scope of the workshop incorporated the following aspects: modelling of the processes of momentum heat and mass transfer in homogeneous and heterogeneous plasma jets as well as interaction between the particles and the base; diagnostics of the parameters of gas and disperse phases in plasma flows; plasma-spraying processes investigations; processes of treatment and production of materials, including powder materials.
Inductive Measurement of Plasma Jet Electrical Conductivity
Measurement of plasma jet electrical conductivity has utility in the development of explosively driven magnetohydrodynamic (MHD) energy converters as well as magnetic flux compression reaction chambers for nuclear/chemical pulse propulsion and power. Within these types of reactors, the physical parameter of critical importance to underlying MHD processes is the magnetic Reynolds number, the value of which depends upon the product of plasma electrical conductivity and velocity. Therefore, a thorough understanding of MHD phenomena at high magnetic Reynolds number is essential, and methods are needed for the accurate and reliable measurement of electrical conductivity in high-speed plasma jets. It is well known that direct measurements using electrodes suffer from large surface resistances, and an electrodeless technique is desired.
