# IEEE Transactions on Plasma Science

## Issue 2  Part 2 • Feb. 2019

This issue contains several parts.Go to:  Part 1

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## Filter Results

Displaying Results 1 - 25 of 44

Publication Year: 2019, Page(s):C1 - 1214
| PDF (149 KB)
• ### IEEE Transactions on Plasma Science

Publication Year: 2019, Page(s): C2
| PDF (116 KB)
• ### Gas Breakdown and Discharge Formation in High-Power Impulse Magnetron Sputtering

Publication Year: 2019, Page(s):1215 - 1222
| | PDF (1704 KB) | HTML

Discharge behaviors of high-power impulse magnetron sputtering with different targets have been investigated. Distinct current–voltage curves and target current waveforms are observed. Breakdown voltage and the maximum target current show a periodic drop with the increase of atomic number in subgroups and periods. The target current density is found to be mainly affected by the secondary electron ... View full abstract»

• ### Large Helicon Plasma Source for the Method of Plasma Separation of Spent Nuclear Fuel and Radioactive Waste

Publication Year: 2019, Page(s):1223 - 1230
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This paper outlines the requirements for a source of buffer plasma, which is necessary for elaboration of plasma separation method of substances and following foundations development of plasma reprocessing technology of spent nuclear fuel and radioactive waste. Such source is implemented on the basis of a helicon discharge, allowing plasma generation in a cylindrical volume with characteristic dim... View full abstract»

• ### Theoretical Analysis of the Hollow Electron Beam Interaction With Electromagnetic Waves in a Partially Thermal Plasma-Loaded Helix

Publication Year: 2019, Page(s):1231 - 1242
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The linear theory of the interaction of electromagnetic waves in a helix slow wave structure filled with thermal plasma driven by an electron beam is investigated. The dispersion relation is found by the application of boundary conditions. This dispersion equation determines the propagation and the gain of the modes in the plasma loaded helix-type traveling-wave tube. The complex transcendental me... View full abstract»

• ### An $S$ -Band Long-Pulse Relativistic Backward-Wave Oscillator With Coaxial Extractor

Publication Year: 2019, Page(s):1243 - 1248
| | PDF (1947 KB) | HTML

The physical mechanism, simulation results, and main experimental results of an S-band long-pulse relativistic backward-wave oscillator (RBWO) with a coaxial extractor are presented. The central ideas of the device include: 1) dual resonant cavities replacing the cutoff neck are used to enhance the efficiency and to decrease the electric field; 2) nonuniform slow-wave structures (SWSs) are introdu... View full abstract»

• ### Nonconventional Magnetron as the Cherenkov Generator With a Gyroresonance: Electron-Wave Synchronism Conditions and Experiments

Publication Year: 2019, Page(s):1249 - 1253
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Advancement of magnetrons into the short-wave part of the millimeter band and further into the terahertz range is hampered by a number of objective factors. Overcoming these limitations, the researchers tried to modify the tubes design, achieving the maximum possible increase in the size of the interaction space, with comparable or significantly reduced operating fields. This was partially realize... View full abstract»

• ### Study on the Influence of Two Relativistic Circular Electron Beam Columns Placed in an Elliptical Dielectric Waveguide on Excitation and Amplification of Electromagnetic Waves Using Finite-Element Method

Publication Year: 2019, Page(s):1254 - 1261
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In this paper, the finite-element method (FEM) is applied for an exact solution of the dispersion of hybrid electromagnetic waves excited in a novel combined elliptical waveguide. This special configuration is included of an elliptical metallic waveguide filled with a dielectric material, whereas two axial hollows with circular cross section have been created in it. A hollow is placed in one of fo... View full abstract»

• ### Inverse Magnetron Injection Gun for Megawatt Power, Sub-THz Gyrotron

Publication Year: 2019, Page(s):1262 - 1268
| | PDF (1977 KB) | HTML

Inverse magnetron injection gun (IMIG) provides several advantages over simple MIG especially in high-power, high-frequency gyrotron. Sub-millimeter (>230 GHz), high-power (≥1 MW) gyrotrons would be required in futuristic plasma fusion machines to fulfill the need of tens of megawatt RF power for electron cyclotron resonance heating. Here, in this paper, an IMIG is designed for 0.24-THz, 1-MW g... View full abstract»

• ### Analysis of Multipactor Effects by a Particle-in-Cell Algorithm Integrated With Secondary Electron Emission Model on Irregular Grids

Publication Year: 2019, Page(s):1269 - 1278
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We combine a novel finite-element-based electromagnetic particle-in-cell (EM-PIC) algorithm for the solution of Maxwell–Vlasov equations on irregular (unstructured) grids together with the Furman–Pivi probabilistic model governing the secondary electron emission process. The algorithm can be used for the analysis of resonant electron discharging phenomena (multipactor effects) in high-power radio ... View full abstract»

• ### Compact Plasma Reflex Triode for Neutron Generation

Publication Year: 2019, Page(s):1279 - 1282
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Original neutron generator on the base of pulse accelerating vacuum tube with two targets, symmetrically located on both sides of deuteron source, is discussed. Two immersion lenses in front of each other use as accelerating and focusing systems. Lenses cathodes are Faraday cups with targets for neutron production on the bottom. Symmetric ring magnetic elements cover immersion lenses for correctin... View full abstract»

• ### Kinetics of Ions Emitted From Nanosecond-Pulsed Laser-Generated Plasma in Broad Range of the Laser Fluence

Publication Year: 2019, Page(s):1283 - 1289
| | PDF (1501 KB) | HTML

Carbon plasma was produced by irradiating a graphite target with nanosecond-pulsed Nd:YAG laser beam in the broad range of the laser fluence (25– $2196\,\,\text {J}\cdot \text {cm}^{-2}$ ). A time resolving flat Langmuir probe was used to record the carbon ion pulses. For the investigated range of laser fluence, approximately t... View full abstract»

• ### Numerical Study of Circulating Electrons in a Cylindrical Accelerator With Converging Electron Beam

Publication Year: 2019, Page(s):1290 - 1296
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The cylindrical triode-type accelerator GESA IV-m was built for the application of a radial converging pulsed electron beam to modify the surface of an anode tube. The experimental studies showed an anode current of only 80% of the emission current although the control grid has a transparency of more than 96%. Responsible are beam electrons that miss the anode and circulate in the accelerator volu... View full abstract»

• ### Correlation of Characteristic Ne SXR Signal Pulse With Computed Plasma Focus Dynamics in the Ne (97.5%)–Kr (2.5%) Admixtures of the INTI PF Machine at 12 kV

Publication Year: 2019, Page(s):1297 - 1301
| | PDF (599 KB) | HTML

This paper shows the correlation of the characteristic Ne soft X-ray (SXR) signal pulse with computed dynamics of the plasma focus using doped neon in Ne (97.5%)/Kr (2.5%) admixtures. The Lee model code is coupled with a specifically designed correlation excel template. The results show that typically, the characteristic Ne SXR pulse signal starts after the start of the reflected shock (RS) and be... View full abstract»

• ### Enhancement of Polymer Powder Wettability by Using Surface Dielectric Barrier Discharge

Publication Year: 2019, Page(s):1302 - 1308
| | PDF (2926 KB) | HTML

The surface of 180- $\mu \text{m}$ polyethylene (PE) and 200-nm polytetrafluoroethylene (PTFE) powders are hydrophilized by using surface dielectric barrier discharge (sDBD) applied to a batch of 20 g for both cases. On the sDBD electrode, charged particles by plasma generation are able to diffuse onto the power surface throug... View full abstract»

• ### Atmospheric Pressure Microwave Argon Plasma Sheet for Wettability Modification of Polyethylene Surfaces

Publication Year: 2019, Page(s):1309 - 1315
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The characterization of an atmospheric pressure microwave argon plasma in the form of a plasma sheet and the results of its use in the investigation of the wettability modification of polyethylene (PE) surfaces are presented in this paper. The spectroscopic investigations performed indicate a plasma temperature at the level of 750–1100 K and an electron density at the level of 2.9–... View full abstract»

• ### Design, Development, and Operation of Seven Channels’ 100-GHz Interferometer for Plasma Density Measurement

Publication Year: 2019, Page(s):1316 - 1321
| | PDF (1795 KB) | HTML

A seven-channel microwave interferometer (100 GHz) is designed, developed, and used to measure the radial profile of the plasma density $({\mathbf {n}}_{\mathbf {e}})$ in Aditya tokamak. The resolution of the density measurement is ${n}_{e}=2 \times {10}^{11}\,\,{\text {cm}}^{-3}$ <... View full abstract»

• ### A Time-Domain Impedance Probe for Fast Measurements of Electron Plasma Parameters in the Ionosphere

Publication Year: 2019, Page(s):1322 - 1329
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A new time-domain impedance probe is presented in this paper. The new instrument is able to make measurements of absolute electron density and electron-neutral collision frequency in the ionosphere at temporal and spatial resolutions not previously attained. A single measurement is made in $100~\mu \text{s}$ , which yields an ... View full abstract»

• ### Spatial–Temporal Evolution and Plasma Parameters’ Diagnosis of a Transverse Glow Discharge in Atmospheric Pressure Air

Publication Year: 2019, Page(s):1330 - 1335
| | PDF (1371 KB) | HTML

A stationary transverse discharge excited by an alternating current voltage is generated downstream of two needle electrodes perpendicular to flowing air lower than 4.1 L/min. The results show that under a constant peak current, the discharge length increases with increasing the air flow rate. Under a constant flow rate, it becomes fatter and brighter with increasing the peak current. Through the ... View full abstract»

• ### Contrasting Characteristics of Gas–Liquid Reactive Species Induced by Pulse-Modulated RF and kHz Sinusoidal Plasma Jets

Publication Year: 2019, Page(s):1336 - 1344
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The pulse-modulated radio frequency (RF) and kHz sinusoidal voltages are used for the excitation of two plasma jets, for which the reactive species in the plasma plumes and in the treated water are comparatively studied. With the same discharge power, it is found that concentrations of aqueous reactive species generated by the kHz sinusoidal plasma jet are higher than that of the pulse-modulated R... View full abstract»

• ### Analysis of Integrated Power System With Pulse Load by Periodic Orbit

Publication Year: 2019, Page(s):1345 - 1351
| | PDF (1293 KB) | HTML

The vessel’s pulse load can intermittently produce pretty high power in a very short time. Considering their periodical charge-and-discharge process, the system variables of integrated power system (IPS) are characterized by a periodic alternating process rather than a single-equilibrium point. It is not suitable to evaluate the operational performance according to the equilibrium point. In this p... View full abstract»

• ### Design and Simulation of a Multimodule Superconducting Inductive Pulsed-Power Supply Model for a Railgun System

Publication Year: 2019, Page(s):1352 - 1357
| | PDF (1965 KB) | HTML

The superconducting inductive pulsed-power supply (IPPS) is considered to have broad application prospects in the field of electromagnetic launch because of its low electrical loss. In order to obtain a higher efficiency in continuous electromagnetic launch, a repetitive IPPS circuit topology based on a high-temperature superconducting pulse power transformer (HTSPPT) has been proposed in our prev... View full abstract»

• ### Reluctance Launcher Coil-Gun Simulations and Experiment

Publication Year: 2019, Page(s):1358 - 1363
| | PDF (1770 KB) | HTML

Single-stage reluctance launcher simulations and experiment reaching velocity of 54.3 m/s are presented. A comparison between the experimental and two type of simulations, a numeric simulation and a quasi-analytic simulation was done. An average accuracy of ~4% was obtained for the numeric simulation and ~6% for the quasi-analytic simulation. The two complementary approaches of simulations can be ... View full abstract»

• ### Calculations of Multipactor Growth in Rectangular Waveguides

Publication Year: 2019, Page(s):1364 - 1371
| | PDF (1727 KB) | HTML

Multipactor growth in rectangular waveguides is probed based on a kinetic approach. Unlike most studies relying on the Vaughan model, a probabilitic approach for random multiple secondary particle emissions is used. Spread in electron emission velocities, the angular dependence of secondary emission yields, and an external radio frequency (RF) driving field due to a TE10 mode, were all built in. T... View full abstract»

• ### De-Excitation of Excited States in a Nitrogen Switch After Discharge

Publication Year: 2019, Page(s):1372 - 1377
| | PDF (1972 KB) | HTML

The de-excitation of nitrogen excited states after spark gap discharge was investigated with time-resolved optical emission spectroscopy method. Recombination of ionized particles was experimentally proved less than several tens microseconds. After the recombination process, it was shown that atomic nitrogen in ground state [N(4S)] and molecular nitrogen in first excited state [N2<... 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)