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Plasma Science, IEEE Transactions on

Issue 6 • Date Dec 1991

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Displaying Results 1 - 25 of 28
  • Temperature-limited electron bombardment heating method

    Publication Year: 1991 , Page(s): 1279 - 1289
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (916 KB)  

    A temperature-limited electron bombardment heating method capable of heating LaB6 cathodes to 1800°C has been developed. This method heats LaB6 cathodes in a Pierce-type electron gun which is pulsed to 115 kV; 1.9-cm-diameter LaB6 cathodes have been heated to 1800°C, with 370 W/cm2 of heating power. This method has been successfully used in a pul... View full abstract»

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  • New structure for a slow-wave Rogowski coil

    Publication Year: 1991 , Page(s): 1290 - 1291
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (112 KB)  

    The author proposes the construction of a slow-wave Rogowski coil wound by using a novel type of three-layered wire that is formed by placing a flexible dielectric strip between two conducting strips. This structure results in a distributed capacitance along the wire. The construction of a slow-wave Rogowski coil can then be easily achieved by directly winding this kind of wire on a toroid with ei... View full abstract»

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  • Physics and applications of charged particle beam sources

    Publication Year: 1991 , Page(s): 1143 - 1151
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (768 KB)  

    The authors review the physics and a few applications of charged particle beam sources, most of which originate from, propagate through, or use as a target, a partially ionized plasma. The authors present the plasma phenomena and plasma conditions which are general to most of the charged particle sources, but also other approaches and the current status of the research. The authors describe the ap... View full abstract»

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  • Electric power switches

    Publication Year: 1991 , Page(s): 1132 - 1142
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1048 KB)  

    A review is given of the physics and engineering behavior of arcs in vacuum and axial gas blast under the conditions found in high-voltage circuit breakers. The topics included are: the zero energy switch; current limiting switches; arc control; the gas-blast circuit breakers; the low-current gas-blast arc; arcing with ablation; interruption dynamics; arc modeling; vacuum as a switching element; t... View full abstract»

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  • A multiple-cathode arc-discharge plasma source

    Publication Year: 1991 , Page(s): 1244 - 1247
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (288 KB)  

    A plasma source for obtaining a 1-cm length of high-fractional ionized plasmas with electron densities in the range of 1015-1017 cm-3 is described. The source consists of a capacitive discharge between a metal anode and an array of small metal cathodes embedded in epoxy, each with a current-limiting resistor. The effect is to have an array of sources which merge in... View full abstract»

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  • A two-dimensional soliton in a positive ion-negative ion plasma

    Publication Year: 1991 , Page(s): 1259 - 1266
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (536 KB)  

    The authors describe a series of experiments performed in a positive ion-negative ion plasma that were designed to study the reflection and focusing properties of solitons. The nonlinear wave was compared with a theoretical model using linear waves. The two-dimensional soliton was created by reflecting an incident planar soliton from a concave hemispherical surface. The experimental results are in... View full abstract»

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  • Corona discharge processes

    Publication Year: 1991 , Page(s): 1152 - 1166
    Cited by:  Papers (128)  |  Patents (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1300 KB)  

    Applications of corona discharge induced plasmas and unipolar ions are reviewed. Corona process applications emphasize one of two aspects of the discharge: the ions produced or the energetic electrons producing the plasma. The ion identities depend on the polarity of the discharge and the characteristics of the gas mixture, specifically on the electron attaching species. The electron energies depe... View full abstract»

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  • Approximate sheath solutions for a planar plasma anode

    Publication Year: 1991 , Page(s): 1235 - 1243
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (656 KB)  

    Solutions to the anode sheath problem are studied for the case where the electron temperature and plasma temperature are constant and equal. The planar geometry description of steady, low-temperature collisional plasmas permits certain simplifications to the species continuity equations whereby a single, highly nonlinear equation is obtained for the entire region disturbed by the electrode. This e... View full abstract»

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  • Plasma reflectors for electronic beam steering in radar systems

    Publication Year: 1991 , Page(s): 1228 - 1234
    Cited by:  Papers (22)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (688 KB)  

    The author describes investigations into methods of generating a planar plasma for use as a reflector for radar waves. The use of the plasma reflector could allow electronic beam steering at frequencies above what is generally viable for phased arrays. Three aspects of the planar plasma production are investigated: localization of the plasma, main plasma production, and long-term viability of the ... View full abstract»

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  • Thermal plasma processing

    Publication Year: 1991 , Page(s): 1078 - 1089
    Cited by:  Papers (16)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (992 KB)  

    A review is given of the fundamental aspects involved in material processing using thermal plasma technology. The description of plasma generating devices covers DC plasma torches, DC transferred arcs, RF inductively coupled plasma torches and hybrid combinations of them. Emphasis is given to the identification of the basic energy coupling mechanism in each case and the principal characteristics o... View full abstract»

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  • Plasma displays

    Publication Year: 1991 , Page(s): 1032 - 1047
    Cited by:  Papers (50)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1452 KB)  

    The author describes many of the various approaches which have been used in designing display devices. The emphasis is on device configuration and performance rather than on the physics of the glow discharge. There are three aspects of the physics the author mentions as being unusual to many plasma physicists: the use of priming in display-scanning mechanisms, the use of the Townsend discharge in ... View full abstract»

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  • Improving the signal to noise of FIR polarimetry on constrained-access plasma experiments

    Publication Year: 1991 , Page(s): 1248 - 1253
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (364 KB)  

    Experimental results are presented that demonstrate the pronounced effects produced on the polarization state of an FIR (far infrared) laser beam when a portion of the beam intersects a metallic tubulation at a glancing angle. The effects produced by this interaction are sufficient to totally obscure the desired measurement of Faraday rotation. A model is developed which qualitatively predicts the... View full abstract»

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  • Nonequilibrium lighting plasmas

    Publication Year: 1991 , Page(s): 991 - 1002
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1080 KB)  

    The science of a variety of devices employing nonequilibrium lightning plasmas is reviewed. The devices include the fluorescent lamp, the low-pressure sodium lamp, the neon sign, ultraviolet lamps, glow indicators, and a variety of devices used by spectroscopists, such as the hollow cathode light source. The plasma conditions in representative commercial devices are described. Recent research on t... View full abstract»

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  • Laser-produced plasmas in medicine

    Publication Year: 1991 , Page(s): 1209 - 1219
    Cited by:  Papers (9)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1120 KB)  

    The authors examine those areas of laser medicine in which plasmas (ionized gases) are produced. In fact, the presence of a plasma is essential for the various applications to succeed. The authors consider examples of the plasmas produced in ophthalmology (e.g., lens membrane destruction following cataract surgery), in urology and gastroenterology (e.g., kidney and gall stone ablation and fragment... View full abstract»

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  • Surface processing with partially ionized plasmas

    Publication Year: 1991 , Page(s): 1048 - 1062
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1596 KB)  

    Partially ionized plasmas are used extensively to process surfaces in many areas of technology. Surface processing in this discussion includes deposition of thin films, etching of the surface itself, and modification of the existing surface by oxidation, nitriding, or texturing. Unique materials can be synthesized in reactive gas glow discharges. The development and optimization of plasma processe... View full abstract»

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  • LTE and near-LTE lighting plasmas

    Publication Year: 1991 , Page(s): 1003 - 1012
    Cited by:  Papers (6)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (948 KB)  

    High-pressure mercury lamps, metal halide arc lamps, high-pressure sodium lamps, xenon short-arc lamps, xenon flashlamps, and microwave-excited metal halide lamps are extremely important commercial applications of LTE and near-LTE plasma physics. The author outlines in very brief form the basic plasma science in such light sources. The factors controlling the power balance and the luminous efficac... View full abstract»

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  • The response of a microwave multipolar bucket plasma to a high voltage pulse

    Publication Year: 1991 , Page(s): 1272 - 1278
    Cited by:  Papers (6)  |  Patents (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (524 KB)  

    A collisional model that describes the response of a microwave multipolar bucket plasma to a high voltage pulse is developed for plasma source ion implantation (PSII). The primary purpose is to develop a theoretical model of PSII plasma physics to be used in conjunction with a model of ion-target interaction to optimize PSII processing. Measurements of the sheath position and target current in a 1... View full abstract»

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  • Gas-phase pulsed power switches

    Publication Year: 1991 , Page(s): 1123 - 1131
    Cited by:  Papers (6)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (904 KB)  

    A review of plasma science that is related to gas-phase pulsed power switching is presented. Switch plasmas include uniform glow-type plasmas and constricted arc-type plasmas, and the science involves understanding transport processes in hydrogen, helium, metal vapor, and other plasmas, and electrode processes including limitations related to cathode emission and sheaths. Gas-phase pulsed power sw... View full abstract»

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  • The electron current to a Langmuir probe in a flowing high-pressure plasma

    Publication Year: 1991 , Page(s): 1254 - 1258
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (360 KB)  

    The electron current to a Langmuir probe in a moving high-pressure plasma has been measured and analyzed. The plasma is an atmospheric-pressure propane flame, and the probe's speed relative to the plasma was varied from 10 ms-1 to 30 ms-1. The current is linearly dependent on the speed and appears to be comprised of two components-one driven by diffusion and the other by conv... View full abstract»

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  • Plasma isotope separation methods

    Publication Year: 1991 , Page(s): 1114 - 1122
    Cited by:  Papers (2)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (708 KB)  

    Six major types of isotope separation methods which involve plasma phenomena are discussed. These methods are: plasma centrifuge, AVLIS (atomic vapor laser isotope separation), ion wave, ICR (ion cyclotron resonance), calutron, and gas discharge. The plasma phenomena in these major categories are described. An attempt is made to include enough references so that a more detailed study or evaluation... View full abstract»

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  • Plasma physics issues in gas discharge laser development

    Publication Year: 1991 , Page(s): 1013 - 1031
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1808 KB)  

    An account is given of the interplay between partially ionized plasma physics and the development of gas discharge lasers. Gas discharge excitation has provided a wide array of laser devices extending from the soft X-ray region to the far infrared. The scaling of gas discharge lasers in power and energy also covers many orders of magnitude. The particular features of three regimes are discussed: s... View full abstract»

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  • Plasmas in MHD power generation

    Publication Year: 1991 , Page(s): 1180 - 1190
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1000 KB)  

    The plasma found in a magnetohydrodynamic (MHD) generator is discussed. An MHD generator is an expansion engine. It delivers electric rather than mechanical power and there are virtually no upper limits to the temperature it can tolerate, the rapidity of its response, or the power a single unit can be designed to deliver. The behavior of the plasma is uncomplicated compared to that encountered in ... View full abstract»

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  • Application of weakly ionized plasmas for materials sampling and analysis

    Publication Year: 1991 , Page(s): 1090 - 1113
    Cited by:  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2196 KB)  

    The use of weakly ionized plasmas as spectroscopic sources for materials sampling and analysis is reviewed. Plasma sources currently used for this purpose include direct-current and alternating-current plasmas, inductively coupled plasmas, microwave-induced plasmas, surface-wave plasmas, capacitively coupled plasmas, capacitive microwave plasmas, glow discharges, flowing afterglows, theta pinch di... View full abstract»

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  • Space electric propulsion plasmas

    Publication Year: 1991 , Page(s): 1167 - 1179
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1244 KB)  

    Electric thrusters offer the promise of a substantial improvement in performance over that of conventional chemical rockets currently used in space propulsion applications. There are three basically different ways in which electrical power and propellant inputs might be combined to produce thrust: (1) propellant can be heated electrically and then expanded through a nozzle; (2) electromagnetic bod... View full abstract»

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  • Compact pulsed power generator using an inductive energy storage system with two-staged opening switches

    Publication Year: 1991 , Page(s): 1220 - 1227
    Cited by:  Papers (20)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (544 KB)  

    The pulsed power generator, named ASO-I, is extremely compact and light in comparison with a conventional pulsed power generator, which consists of a Marx bank and a water pulse forming line. The ASO-I has a two-staged opening switch, consisting of fuses in water and a plasma erosion opening switch, and can be operated hundreds of times a day at an output power of 230 kV and 35 kA. The parallel fu... View full abstract»

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Aims & Scope

IEEE Transactions on Plasma Sciences focuses on plasma science and engineering, including: magnetofluid dynamics and thermionics; plasma dynamics; gaseous electronics and arc technology.

 

 

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Editor-in-Chief
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