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# IEEE Transactions on Plasma Science

## Issue 1  Part 2 • Feb. 2008

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 36
• ### Table of contents

Publication Year: 2008, Page(s):C1 - 125
| PDF (39 KB)
• ### IEEE Transactions on Plasma Science publication information

Publication Year: 2008, Page(s): C2
| PDF (37 KB)
• ### Conical DC Discharge in Ambient Air Using Water as an Electrode

Publication Year: 2008, Page(s):126 - 130
Cited by:  Papers (9)
| | PDF (348 KB) | HTML

Conical dc discharge is generated between a copper cathode with a hemispherical head (2-7 mm in diameter) and a static water anode in ambient air. The discharge is hollow and is just like an umbrella if the electrical conductivity of the water electrode is higher than 17.31 musldrcm-1. The profile is composed of three zones with different luminosities. The effects of the discharge curre... View full abstract»

• ### Theory of Pulsed Breakdown of Dense Gases and Optimization of the Voltage Waveform

Publication Year: 2008, Page(s):131 - 139
Cited by:  Papers (15)
| | PDF (523 KB) | HTML

An analytical model of a Townsend breakdown of dense gases under pulsed voltage was developed based on the dynamics of the cathode sheath. Scaling parameters for impulse breakdown were derived and these scalings agreed with experiment and elaborate numerical simulations. The model is applied to optimization of the voltage waveform for obtaining maximum plasma density. We show that the optimal cond... View full abstract»

• ### Plasma in a Rotating Magnetic Field

Publication Year: 2008, Page(s):140 - 145
Cited by:  Papers (2)
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This paper addresses the interaction between plasma and a magnetic field rotating with uniform an angular velocity and amplitude. For our analysis, we assume a plasma with infinite conductivity and constant viscosity coefficients. Starting from the basic equations, we search for exact solutions with respect to velocity and magnetic field. Then, we study the stability of the exact solution and the ... View full abstract»

• ### Nonlinear Dynamics of a Plasma-Filled Diode in the Presence of a Magnetic Field

Publication Year: 2008, Page(s):146 - 155
Cited by:  Papers (6)
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The nonlinear interaction process between the electrons and the immobile ions in a plasma-filled diode has been studied via two different approaches: (1) solving the coupled analytical integral equations and (2) simulating the system by running a particle-in-cell code PDP1 (plasma devices planar 1D). The investigations have extended the analysis to the case where the effect of a magnetic field is ... View full abstract»

• ### Computer Optimized Design of Electron Guns

Publication Year: 2008, Page(s):156 - 168
Cited by:  Papers (17)
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This paper considers the problem of designing electron guns using computer optimization techniques. Several different design parameters are manipulated while considering multiple design criteria, including beam and gun properties. The optimization routines are described. Examples of guns designed using these techniques are presented. Future research is also described. View full abstract»

• ### Optimum Extraction From a CHORDIS by Pressure Variation

Publication Year: 2008, Page(s):169 - 173
Cited by:  Papers (1)
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The influence of the working gas pressure on the extraction behavior of ion beams out of a cold or hot reflex discharge ion source was investigated using xenon ions in the energy range from 17 to 30 keV. Optimal extraction conditions were achieved by transmission measurements through a 90 doubly focusing dipole magnet. The measured currents obtained at the optimized transmission reproduce the Chil... View full abstract»

• ### UV Laser Probing of Imploding Wire-Array Plasmas on the Angara-5-1 Facility

Publication Year: 2008, Page(s):174 - 180
Cited by:  Papers (2)
| | PDF (647 KB) | HTML

Dynamics of tungsten wire-array Z-pinch implosions driven by a current of 3 MA has been studied on the Angara-5-1 facility by using a UV laser probe developed in the Institute of Nuclear Physics and Chemistry. The single-wire-array results including implosion trajectory, an implosion velocity of 3.7 X 107 cm/s, and a minimum pinch size of no more than 0.9 mm were obtained. The numerical... View full abstract»

• ### Influence of the Electrode Material and Structure on the Performance of a XeCl $^{ast}$ Laser

Publication Year: 2008, Page(s):181 - 184
| | PDF (493 KB) | HTML

The XeCl* excimer laser is a well-established system tool for many applications. During operation, highly volatile chlorides are often formed, which leads to enhanced electrode erosion and reduced lifetime. Therefore, special attention should be paid to the rate of erosion of all electrode materials that are used in chlorine based excimer lasers. In our work, we came to the result that the chemica... View full abstract»

• ### Instrumentation for Pulsed Corona Discharge Generation Applied to Water

Publication Year: 2008, Page(s):185 - 191
Cited by:  Papers (7)
| | PDF (253 KB) | HTML

In this paper, we present a model (which is structured as an equivalent electric circuit whose elements are identified and deducted from the nature of the medium, the ionization and expansion process of the streamers that convey the prebreakdown current, and the energy associated to the electric breakdown in water) and a simulation of a pulsed corona discharge (PCD). Considering this, a coaxial re... View full abstract»

• ### A Study on Wall-Charge Behavior of Single-Sustain Waveform Based on $V_{t}$ Close-Curve Analysis in AC Plasma Display Panel

Publication Year: 2008, Page(s):192 - 199
Cited by:  Papers (6)
| | PDF (1107 KB) | HTML

The wall-charge behaviors of the conventional and two types of single-sustain waveforms during address and sustain periods are investigated based on a simulated result and a Vt close-curve analysis. The single-sustain waveform means that the sustain pulse having both positive and negative voltage levels is applied only to the single-side electrode, i.e., the scan (Y) electrode in this paper, where... View full abstract»

• ### Comparison of Vacuum Arc Behaviors Between Axial-Magnetic-Field Contacts

Publication Year: 2008, Page(s):200 - 207
Cited by:  Papers (15)
| | PDF (1051 KB) | HTML

We compared vacuum arc behaviors of three slot-type axial-magnetic-field (AMF) contacts at two fixed contact gaps using high-speed digital photography and arc-voltage measurements. Solid angle is subtended by anode at the center of cathode or the ratio of the anode diameter to the gap length (D/g). With coupled influence of the AMF, we observed that with the D/g ratio 48 mm/14 mm, the arc kept in ... View full abstract»

• ### Vacuum-Arc Behaviors of a Coil-Type Axial-Magnetic-Field Contact at Contact Gap of 60 mm

Publication Year: 2008, Page(s):208 - 214
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Contact gap is usually high in high-voltage vacuum circuit breakers (VCBs). We experimentally investigated vacuum-arc behaviors of a coil-type axial-magnetic-fleld (AMF) contact with a contact diameter of 100 mm and a contact gap of 60 mm, which included vacuum-arc appearance observation and LC discharging current interrupting test. The vacuum arc was ignited by a trigger needle in a demoun... View full abstract»

• ### Inactivation of Aquatic Microorganisms by Low-Frequency AC Discharges

Publication Year: 2008, Page(s):215 - 219
Cited by:  Papers (30)
| | PDF (300 KB) | HTML

Hybrid gas-liquid electrical discharge has been investigated in recent years as an innovative technology for contaminated water treatment. A high-voltage pulsed-power supply is commonly needed for the generation of electrical discharges. This paper aims, in lieu of cost effectiveness, to evaluate the degradation efficiency of electrical discharges with an alternating-current (ac) power since it is... View full abstract»

• ### Improvement of Discharge Delay Time With a New Pulse-Scan Driving Method for AC Plasma Display Panels

Publication Year: 2008, Page(s):220 - 229
Cited by:  Papers (5)
| | PDF (1665 KB) | HTML

A new pulse-scan-based driving method that can significantly reduce total address time delay of discharge ignition during the address period in a plasma display panel (PDP) is proposed. By applying lower negative scan-pulse voltage to the Y electrode for a short interval, the proposed scheme accelerates the ignition of the gas discharge between addressing electrode (A) and scanning electrode (Y), ... View full abstract»

• ### Analysis of Surface Sterilization and Properties of Medical Poly(tetrafluoroethylene) in Remote Argon Plasma

Publication Year: 2008, Page(s):230 - 236
Cited by:  Papers (6)
| | PDF (282 KB) | HTML

We have used a remote-argon-plasma reactor in which the active species can be separated at a special plasma field. Argon gas is used as the work gas. In this remote argon plasma, the distribution of electrons, ions, and radicals and germicidal effect (GE) of Escherichia coli on the surface of medical poly(tetrafluoroethylene) (PTFE) film are studied. Then surface properties of sterilized PTFE are ... View full abstract»

• ### A New Method for the Generation of Large Volume Discharges in Water

Publication Year: 2008, Page(s):237 - 242
Cited by:  Papers (8)
| | PDF (536 KB) | HTML

The production of large volume streamer discharges is essential to the industrial application of such discharge in water. The use of dielectric-coated electrode was found to have a great influence on the initiation of the streamer discharge as well as the formation of streamer channels. In this paper, a sphere-ring electrode configuration, in which the sphere was coated with a kind of silicon rubb... View full abstract»

• ### Matching a Pulsed-Power Modulator to a Streamer Plasma Reactor

Publication Year: 2008, Page(s):243 - 252
Cited by:  Papers (9)
| | PDF (823 KB) | HTML

In this paper, the matching between a pulsed-power modulator and a streamer plasma reactor is discussed. The total process of energizing the reactor is divided into three different steps: before, during, and after plasma generation. Equivalent circuit models are used to obtain insight in the relevant mechanisms. Experiments are used to validate the results of the modeling. Based upon the results, ... View full abstract»

• ### A Disruption Predictor Based on Fuzzy Logic Applied to JET Database

Publication Year: 2008, Page(s):253 - 262
Cited by:  Papers (6)
| | PDF (446 KB) | HTML

Disruptions remain a serious issue for International Thermonuclear Experimental Reactor (ITER) and the commercial reactor. In the past years, significant efforts have been devoted to the development of reliable disruption predictors. In this paper, the potential of fuzzy logic in this field is explored. A new disruption predictor for Joint European Torus (JET), which is based on fuzzy logic, was t... View full abstract»

• ### On the Use of Sweeping Langmuir Probes in Cutting Arc Plasmas—Part I: Experimental Results

Publication Year: 2008, Page(s):263 - 270
Cited by:  Papers (15)
| | PDF (345 KB) | HTML

The first study of Langmuir probes applied to cutting arcs using a sweeping-probe system is presented. It is found that, under a relatively broad range of experimental conditions (changes in the probe material, in the probe radii, or in the sweeping frequency of the probes), no probe damage is registered, notwithstanding the large value of the power flux present with these arcs. In practice, probe... View full abstract»

• ### On the Use of Sweeping Langmuir Probes in Cutting-Arc Plasmas—Part II: Interpretation of the Results

Publication Year: 2008, Page(s):271 - 277
Cited by:  Papers (15)
| | PDF (230 KB) | HTML

A semiempirical Langmuir probe model is introduced that is particularly adapted to high-energy-density cutting arcs, for which, as we have shown in part I, the ion current collected by negatively biased probes shows no plateau in the ion branch of the current-voltage (I-V) probe characteristic, and the signal amplitude is independent of the probe radius. According to the model, the ion drag due to... View full abstract»

• ### X-Ray Absorption Imaging of High-Intensity Discharge Lamps Using an X-Ray Tube Source

Publication Year: 2008, Page(s):278 - 286
Cited by:  Papers (1)
| | PDF (280 KB) | HTML

A table-top system for implementing X-ray absorption imaging measurements of the Hg vapor in high-intensity discharge (HID) lamps is described. The system is based on a commercial X-ray tube source and an optical charge-coupled device array detector, with conversion of X-rays to optical photons by a phosphor. The sensitivity of the system is measured and found to exceed what has been obtained prev... View full abstract»

• ### ON-State Characteristics of a High-Power Photoconductive Switch Fabricated From Compensated 6-H Silicon Carbide

Publication Year: 2008, Page(s):287 - 292
Cited by:  Papers (12)
| | PDF (243 KB) | HTML

The ON-state characteristics of a 6-H silicon carbide (SiC) photoconductive switch with vertical geometry, transverse illumination, and linear-mode operation are presented. The switch is triggered by an optical source with a photon energy that is less than the bandgap energy of SiC. Following low-power matching characteristics, the analysis of a design incorporating and layers next to the cathode ... View full abstract»

• ### Arc Modeling in a Plasmatron Channel

Publication Year: 2008, Page(s):293 - 298
Cited by:  Papers (11)
| | PDF (230 KB) | HTML

The mathematical model of a direct-current arc at atmospheric pressure and low currents has been proposed. This paper presents the results of 2-D simulations for an air arc within the plasmatron channel, as well as the anode, composite cathode, and external regions. The model does not employ any adjustable parameter and therefore enables direct comparison with the experiments. The model prediction... 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)