# IEEE Transactions on Plasma Science

## Issue 12  Part 3 • Dec. 2012

This issue contains several parts.Go to:  Part 1  | Part 2

## Filter Results

Displaying Results 1 - 25 of 32

Publication Year: 2012, Page(s):C1 - 3401
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• ### IEEE Transactions on Plasma Science publication information

Publication Year: 2012, Page(s): C2
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• ### Reduction of Laser Pulse Diffraction by Magnetized Electron–Positron Plasma Lens

Publication Year: 2012, Page(s):3402 - 3408
Cited by:  Papers (1)
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The main goal of this paper is to focus a laser beam with a thin axially magnetized electron-positron (EP) plasma lens in the area outside the plasma region. A thin plasma slab is used as an optical element as long as the focal length is larger than the thickness of the lens. The focal length is defined as the distance between the plasma lens and the laser-beam focus point. The external magnetic f... View full abstract»

• ### Experimental Study of Breakdown Time in a Pulsed 2.45-GHz ECR Hydrogen Plasma Reactor

Publication Year: 2012, Page(s):3409 - 3419
Cited by:  Papers (4)
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An electron cyclotron resonance (ECR) plasma reactor developed at the European Spallation Source Bilbao has been operated in pulsed mode at 50 Hz to study the breakdown-process dynamics by time-resolved diagnostics. Injected power, reflected power, electrical-biased probe saturation current, and light emission were measured simultaneously for three different magnetic fields: under ECR, ECR, and as... View full abstract»

• ### Axially Periodic Dielectric-Loaded Circular Waveguide for Microwave/Millimeter-Wave Devices

Publication Year: 2012, Page(s):3420 - 3426
Cited by:  Papers (1)
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A circular waveguide loaded with periodic dielectrics is considered. Two theoretical methodologies have been developed to investigate the wave dispersion characteristics for such structure. The feasibility and accuracy of the theoretical approaches have been verified by high frequency structural simulator (HFSS) simulations. Using the theoretical approaches, effects of the material properties and ... View full abstract»

• ### Measurement of S-Band Microwave Gas Breakdown by Enhancing the Electric Field in a Waveguide

Publication Year: 2012, Page(s):3427 - 3432
Cited by:  Papers (3)
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With the development of narrow-band high-power-microwave (HPM) technology, air breakdown has become a serious problem that concerns to the HPM applications. A new method is presented in this paper to determine the electric field of the microwave air breakdown near the atmosphere pressures. Two metal pins were used to strengthen the microwave electric field in a sealed waveguide, putting on the sym... View full abstract»

• ### Switched Oscillator: Parameter Effects on the Generated Signals

Publication Year: 2012, Page(s):3433 - 3441
Cited by:  Papers (3)
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This paper describes a methodology to design a switched oscillator (SWO) together with its experimental validation. The dependence of the SWO resonance frequency, bandwidth, and quality factor upon spark-gap pressure, interelectrode distance, and transmission-line (TL) length is evaluated. The SWO simulation results obtained with both the TL model developed in the computer program EMTP-alternative... View full abstract»

• ### Study on the Radial-Sheet-Beam Electron Optical System

Publication Year: 2012, Page(s):3442 - 3448
Cited by:  Papers (10)
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A new kind of radial-sheet-beam electron optical systems in W-band radial-sheet-beam traveling-wave tubes was described in this paper. A cylindrical cathode with an arc emitting surface was adopted to produce a 2-kV 2-A radial sheet electron beam. The effects of cathode size and anode size on the space-charge-limited current were studied. The electron-beam formation and transmission were discussed... View full abstract»

• ### Light Emission From CsI-Coated Carbon Velvet Cathodes Under Varied Conditions

Publication Year: 2012, Page(s):3449 - 3454
Cited by:  Papers (12)
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Many high-power electron devices utilize cold-cathode diodes to generate intense electron beams. These cold cathodes have the advantage of being capable of supplying several kiloamperes of current spread over a large cross section without the need for auxiliary components such as a heater supply. However, they suffer from many known problems such as nonuniform emission that can result in small are... View full abstract»

• ### A Semiempirical Evaluation of the Thermal Conductivity in Ablated Dense Tungsten Plasma

Publication Year: 2012, Page(s):3455 - 3457
Cited by:  Papers (4)
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For understanding the properties of ablated dense tungsten, we have proposed a semiempirical evaluation of thermal conductivity based on the Wiedemann-Franz law. The electrical conductivity of ablated dense tungsten has been evaluated by the exploding-wire discharges in water and the isochoric heating of wire in a vacuum. The results indicate that the thermal conductivity derived from the electric... View full abstract»

• ### Electrical Characterization of a Reverse Vortex Gliding Arc Reactor in Atmosphere

Publication Year: 2012, Page(s):3458 - 3464
Cited by:  Papers (5)
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A new kind of gliding-arc reactor was designed for this study. A shape-memory-alloy electrode controls the discharge arc movement at the start of the discharge stage, while the root of the arc shifts to the ground electrode under normal operation. Experimental results for electrical parameters (voltage and current) in air were analyzed. When the power is adjusted from 50 to 70 W, the discharge wav... View full abstract»

• ### Effect of Iron Addition on the Decomposition of Dye by Pulsed Discharge in Air With Water Droplets Spray

Publication Year: 2012, Page(s):3465 - 3470
Cited by:  Papers (2)
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The effect of iron addition in the treated solution on the decomposition of indigo carmine is reported. The effect of iron addition was evaluated for various Fe2+ concentrations ranging from 0 to 118 μmol/L (μM). The decolorization rate and efficiency with Fe2+ addition were higher than those without Fe2+ and increased with the rise in Fe2+... View full abstract»

• ### Study on the Characteristics of Atmospheric Dielectric Barrier Discharges in $hbox{He}{-}hbox{N}_{2}$ Admixture

Publication Year: 2012, Page(s):3471 - 3475
Cited by:  Papers (5)
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The influence of different amounts of nitrogen impurity on the barrier discharge at atmospheric pressure in He-N2 admixture gas has been numerically studied based on a 1-D fluid model. The characteristic of the current density versus N2 impurity amount shows a transition point. The influence of the amplitude and frequency of the applied voltage on both N2 impurity ... View full abstract»

• ### Characterization of an Atmospheric-Pressure Helium Plasma Generated by 2.45-GHz Microwave Power

Publication Year: 2012, Page(s):3476 - 3481
Cited by:  Papers (10)
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An atmospheric-pressure helium plasma generated in a 2.45-GHz microwave-induced cylindrical plasma torch has been investigated. The atmospheric-pressure helium plasma can be ignited at a microwave power of less than 400 W and sustained at as low as 100 W, at a gas flow of 50 L/min. The electron temperature Te, electron density ne, and gas temperature Tg measured by... View full abstract»

• ### G. stearothermophilus Spores' Inactivation by a Single Dielectric Barrier Discharge in Air at Atmospheric Pressure

Publication Year: 2012, Page(s):3482 - 3484
Cited by:  Papers (2)
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In this paper, we present some results of a plasma source developed at the Plasma Laboratory of the University of Brasilia for sterilization studies at atmospheric pressure. This source was primarily conceived to produce a corona-type discharge to be used on pollutant control experiments. We used ordinary air as the precursor gas. Our apparatus consists of two coaxial cylindrical tubes with differ... View full abstract»

• ### High-Speed Image Processing Algorithms for Real-Time Detection of MARFEs on JET

Publication Year: 2012, Page(s):3485 - 3492
Cited by:  Papers (2)
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This paper presents a high-speed image processing algorithm applied to multifaceted asymmetric radiation from the edge detection on Joint European Torus. The algorithm has been developed in C/C++ language using the OpenCV library for image processing and the LibSVM library for pattern classification and has been tested on a dedicated Intel 64-bit Linux computing platform. The code implemented achi... View full abstract»

• ### Rotating Gliding Arc Codriven by Magnetic Field and Tangential Flow

Publication Year: 2012, Page(s):3493 - 3498
Cited by:  Papers (10)
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The physical characteristics of a rotating gliding arc (RGA) discharge reactor, which is codriven by magnetic field and tangential flow, have been investigated by means of an oscilloscope and a high-speed camera. When air was used as the carrier gas, RGA motions in magnetic fields were recorded by a high-speed camera. A double-arc phenomenon was observed in the magnetic field with a low flux densi... View full abstract»

• ### A High-Repetition-Rate Bounded-Wave EMP Simulator Based on Hydrogen Thyratron and Transmission Line Transformer

Publication Year: 2012, Page(s):3499 - 3507
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Transmission line transformers (TLTs) are usually used for impedance match and pulse transformers, which have received gradual attention due to their excellent frequency response characteristics over conventional wire-wound transformers. This transformer basically consists of equal lengths of transmission line normally used by coaxial cables connected in parallel at the input side of the transform... View full abstract»

• ### Different Phenomena in UV-Induced Surface Flashover

Publication Year: 2012, Page(s):3508 - 3511
Cited by:  Papers (2)
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Much of the work in the area of surface flashover of the past few decades has been devoted into determining which parameters are important in predicting flashover behavior, and the theoretical understanding involved in the process is not yet mature. In this paper, the flashover performance of the insulator in vacuum was studied in the UV-laser-illuminated case. A testbed comprised of a pulsed high... View full abstract»

• ### Particle-in-Cell Simulation of a Spatial-Harmonic Magnetron With a Cold Secondary Emission Cathode

Publication Year: 2012, Page(s):3512 - 3519
Cited by:  Papers (7)
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A 16-vane millimeter-wave spatial-harmonic magnetron (SHM) with a cold secondary emission cathode is examined by the use of a 3-D particle-in-cell (PIC) code embedded in CST Particle Studio. Simulations of the SHM are performed without artificial RF priming and without assuming restrictive assumptions on the mode of operation or on the number of harmonics to be considered. Thus, in our simulations... View full abstract»

Publication Year: 2012, Page(s):3520 - 3527
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The plasma plume of a 1-MW-class quasi-steady magnetoplasmadynamic (MPD) arcjet is studied to determine the plume structure and plasma plume fluctuations in a downstream plume region (250-1250 mm away from the MPD arcjet). By using a double probe and a high-electron-temperature ( ~ 5 eV) and high-number-density (~8 ×1019 m-3) region, so-called “cathode jets ... View full abstract»

• ### Experimental Study of a Centrifugal Conductive MHD Pump

Publication Year: 2012, Page(s):3528 - 3532
Cited by:  Papers (2)
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Results of experiments performed on disk models of a centrifugal conductive magnetohydrodynamic (MHD) pump, which can be considered as prototypes of pumps in casting of ferrous and nonferrous metals, are presented. Low-temperature Wood and Rose alloys are used as working fluids. Dependence values of the output pressure and flow rate on parameter IB (where I is the electric current an... View full abstract»

• ### Characterization of Portable Resistive Barrier Plasma Jet and Its Direct and Indirect Treatment for Antibiotic Resistant Bacteria and THP-1 Leukemia Cancer Cells

Publication Year: 2012, Page(s):3533 - 3545
Cited by:  Papers (12)
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An atmospheric pressure nonthermal resistive barrier plasma (RBP) jet was designed, constructed, and characterized for plasma surface treatment procedures applied in biomedical applications. The RBP source can operate in both dc (battery) and standard 60/50-Hz low-frequency ac excitation and can function effectively in both direct and indirect plasma exposure configurations, depending on the type ... View full abstract»

• ### Carbon–Tungsten Thin-Film Deposition by a Dual Thermionic Vacuum Arc

Publication Year: 2012, Page(s):3546 - 3551
Cited by:  Papers (2)
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Carbon and tungsten films were deposited simultaneously from two separate plasmas produced by the thermionic vacuum arc method. Total film thickness, surface roughness, atomic composition, and chemical bonds of atoms at the surface and inside the deposited films were analyzed for different substrate positions of the samples. X-ray photoelectron spectroscopy analyses suggest that tungsten carbide f... View full abstract»

• ### An X-Band Dual-Frequency Coaxial Relativistic Backward-Wave Oscillator

Publication Year: 2012, Page(s):3552 - 3559
Cited by:  Papers (8)
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An X-band dual-frequency coaxial relativistic backward-wave oscillator (CRBWO) with sectioned slow-wave structures (SWSs) is presented and investigated in this paper. Through theoretical and numerical analysis and particle-in-cell (PIC) simulation, a combination generation of two stationary single-frequency regimes is selected as the operation regime of the two-section CRBWO, and a better understa... View full abstract»

## 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.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Steven J. Gitomer, Ph.D.
Senior Scientist, US Civilian Research & Development Foundation
Guest Scientist, Los Alamos National Laboratory
1428 Miracerros Loop South
Santa Fe, NM  87505  87505  USA
tps-editor@ieee.org
Phone:505-988-5751
Fax:505-988-5751 (call first)