# IEEE Transactions on Plasma Science

## Issue 5  Part 2 • May 2014

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 30

Publication Year: 2014, Page(s):C1 - 1345
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• ### IEEE Transactions on Plasma Science publication information

Publication Year: 2014, Page(s): C2
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• ### Fast-Framing Optical Imaging of Plasma Formation in Resonant Microwave Pulse Compressor

Publication Year: 2014, Page(s):1346 - 1352
Cited by:  Papers (6)
| |PDF (1650 KB) | HTML

Plasma evolution in the interference switch of an S-band pulse compressor operating in the frequency of 2.766 GHz, with input pulses of 200-450-kW power and duration of 2.4 μs, was studied experimentally and in numerical simulations. The system was filled with dry air at 2 × 105-3 × 105-Pa pressure. The plasma discharge that switches the phases of the com... View full abstract»

• ### Nonlinear Steepening of Density Profile by Intense Laser Radiation in Collisional Inhomogeneous Plasmas

Publication Year: 2014, Page(s):1353 - 1357
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The interaction between a high-power electromagnetic wave with an inhomogeneous underdense plasma is studied by considering the ohmic heating caused by laser radiation. Considering the plasma inhomogeneity and ohmic heating, the nonlinear dielectric permittivity is obtained in the collisional regimes. The wave equation is numerically solved and the electromagnetic fields, electron density, electro... View full abstract»

• ### An Original Method for Spot Detection and Analysis for Large Surveys of Videos in JET

Publication Year: 2014, Page(s):1358 - 1366
Cited by:  Papers (2)
| |PDF (2937 KB) | HTML

An original spot detection method for large surveys of videos in Joint European Torus (JET) is presented. The method can be used for the automatic identification of spots in JET infra-red (IR) videos and for the assessment of the long-term trends in their evolution. This method has been applied to the analysis of a large database of JET IR images collected during the last campaigns of operation wi... View full abstract»

• ### Erosion Model of Trigger Electrode Based on the Theory of Microexplosion

Publication Year: 2014, Page(s):1367 - 1372
Cited by:  Papers (1)
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This paper discusses the normal working mechanism of trigatron gap which leads to the erosion of trigger electrode. The theory of microexplosion is based on the gas discharge theory, explosive electron emission theory and thermodynamical theory, and the erosion model of trigger electrode can be obtained by microexplosion theory. The specific action is an important physical quantity in the theory o... View full abstract»

• ### High-Voltage Modular Switched Capacitor Pulsed Power Generator

Publication Year: 2014, Page(s):1373 - 1379
Cited by:  Papers (5)
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Utilization of power electronics converters in pulsed power applications introduced a new series of reliable, long life, and cost-effective pulse generators. However, these converters suffer from the limited power ratings of semiconductor switches, which necessitate introduction of a new family of modular topologies. This paper proposes a modular power electronics converter based on voltage multip... View full abstract»

• ### A New Method for Synthesis of Beam-Shaping Mirrors for Off-Axis Incident Gaussian Beams

Publication Year: 2014, Page(s):1380 - 1384
Cited by:  Papers (1)
| |PDF (1123 KB) | HTML

In quasi-optical transmission systems, it is usually required to transform a certain Gaussian beam into another one characterized by a different set of parameters. Mirrors with quadratic surface contour functions, such as paraboloidal, ellipsoidal, and toroidal mirrors, are widely used for such a transformation. However, quadratic surface contours do not provide sufficient conversion efficiencies ... View full abstract»

• ### Optical Emission Spectroscopy of Plasma Formation in a Xenon Theta-Pinch

Publication Year: 2014, Page(s):1385 - 1392
Cited by:  Papers (2)
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Analyses of xenon spectral emission data in the IR range from excited neutral xenon transitions and estimations of electron temperature are performed on a theta-pinch test article. Estimations are based on a collisional-radiative model originally written for Hall-effect thrusters utilizing apparent collisional cross-sections. Tests performed on a pulsed xenon plasma at an energy of 80 J, neutral b... View full abstract»

• ### Experimental Investigation of Electrode Erosion of Trigatron in Microsecond Arc Discharge Process

Publication Year: 2014, Page(s):1393 - 1399
Cited by:  Papers (2)
| |PDF (2723 KB) | HTML

Trigatrons have been widely used in many fields. However, the performance of trigatrons typically degrades as operational time increases. Among many influence factors, electrode erosion is a primary cause of trigatrons failure. In this paper, the peak current and pulsewidth of trigatrons are in the order of kiloampere (kA) and microsecond (μs), respectively, with an electrode size in the or... View full abstract»

• ### Coupling Discharge Between Keyhole Plasma and Arc Plasma in Laser-Arc Welding of Mg Alloy

Publication Year: 2014, Page(s):1400 - 1406
Cited by:  Papers (4)
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This paper describes investigations on the coupling discharge process between laser keyhole plasma and arc plasma during laser-arc welding. The characteristics of single arc plasma and hybrid arc plasma in different locations were comparably estimated by spectral diagnosing. Together with the plasma behavior observation, the particle exchanges between laser keyhole plasma and arc plasma were analy... View full abstract»

• ### Buoyant-MHD Flows in HCLL Blankets Caused by Spatially Varying Thermal Loads

Publication Year: 2014, Page(s):1407 - 1412
Cited by:  Papers (2)
| |PDF (2307 KB) | HTML

In the helium-cooled lead lithium (HCLL) blanket concept convective phenomena caused by nonuniform thermal conditions due to bulk neutron volumetric heating can occur. Buoyancy can become very important and modify the velocity distribution and related heat transfer performance of the blanket. A numerical study has been performed to investigate liquid metal flows driven by buoyant forces in a breed... View full abstract»

• ### Optimization of the Integrated Diagnostics in Equatorial Port Plug #3 of ITER for Minimal Interspace Dose Rate

Publication Year: 2014, Page(s):1413 - 1420
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According to Internationa Thermonuclear Experimental Reactor (ITER) integration procurement arrangements, the installment of diagnostics in a port should not increase the shutdown dose rate (SDDR) in the port interspace area by no more than ~50 μSv/h above the baseline, assuming another 50 μSv/h is attributed to contribution from the port structure and other ITER in-vessel components... View full abstract»

• ### EBW Technology Applied on the ICRF Antenna Component

Publication Year: 2014, Page(s):1421 - 1424
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Central conductor is one of the key components of ion cyclotron ranges of heating antenna, which is usually formed by welding due to the complex structures. High level of welding seam quality and small deformation are very important to central conductor. Electron beam welding (EBW) is suggested as the central conductor welding. To meet EBW requirements and reduce the risk, complex and high level o... View full abstract»

• ### A Pulse Step Modulator High-Voltage Power Supply for Auxiliary Heating System on the HL-2A Tokamak

Publication Year: 2014, Page(s):1425 - 1429
Cited by:  Papers (6)
| |PDF (1605 KB) | HTML

To supply the cathode voltage for the two gyrotrons (140 GHz/1 MW/3 s) of the electron cyclotron resonant heating system on HL-2A, a high-voltage power supply (HVPS) based on pulse step modulator (PSM) with rated output of 80 kV/200 A has been built. Because the storing energy of the PSM HVPS is much lower than traditional HVPS, it is beneficial to load protection. In the PSM HVPS, there are eight... View full abstract»

• ### Plasma Fusion at 10 MK With Extremely Heated $^{3}{\rm He}$ Ions

Publication Year: 2014, Page(s):1430 - 1437
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A new mechanism for plasma fusion at 10 million degree kelvin (MK) with extremely heated (100 MK or hotter) 3He ions was developed. This new mechanism involves a two-stage heating process when an electric current is driven through a multiion plasma with 3He ions. To realize thermonuclear fusion, plasmas must be heated to 100 MK and higher. The ohmic heating process is the sim... View full abstract»

• ### Manufacturing and Examination for ITER Blanket First Wall Small-Scale Mockups With KoHLT-EB in Korea

Publication Year: 2014, Page(s):1438 - 1442
Cited by:  Papers (6)
| |PDF (1571 KB) | HTML

The ITER first wall (FW) includes beryllium armor tiles joined to a CuCrZr heat sink. The FWs are one of the critical components in an ITER machine with a surface heat flux of 4.7 MW/m2 or above. The small-scale mockup shall be a part of the qualification tests and used to validate the performance of the dominant manufacturing technologies before the production of larger scale components, and this... View full abstract»

• ### Progress of Functional Components Design and Analysis of a Korean HCCR TBM in ITER

Publication Year: 2014, Page(s):1443 - 1448
Cited by:  Papers (5)
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Korea has developed a helium cooled ceramic reflector (HCCR) test blanket module (TBM) for testing in a ITER, which consists of functional components to distribute the He coolant to each region such as the first wall (FW), breeding zone (BZ), side wall (SW), and back manifold (BM). In this paper, the detailed design of each component is introduced as follows: 1) FW considering cooling under a stru... View full abstract»

• ### The WEST Project: Challenges of Diagnostic Integration

Publication Year: 2014, Page(s):1449 - 1456
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The W -for tungsten- environment in steady-state tokamak (WEST) project consists in transforming the French tokamak Tore Supra into an X-point divertor one and aims at testing the ITER technology of actively cooled high heat flux tungsten components during ITER-relevant long pulses. In addition to the integration in the vacuum vessel of a lower divertor and an upper one, this metamorphosis has a s... View full abstract»

• ### Nuclear Aspects and Blanket Testing/Development Strategy for ST-FNSF

Publication Year: 2014, Page(s):1457 - 1463
Cited by:  Papers (6)
| |PDF (2693 KB) | HTML

One of the main technology missions of a fusion nuclear science facility (FNSF) is to validate the performance of an integrated set of in-vessel components in prototypical fusion operating conditions prior to inclusion in demonstration and/or first-of-a-kind power plant. The FNSF developed by Princeton Plasma Physics Laboratory will enable such integral testing of fusion technologies. The blanket ... View full abstract»

• ### Decay Modes of Anode Surface Temperature After Current Zero in Vacuum Arcs-Part I: Experimental Study

Publication Year: 2014, Page(s):1464 - 1473
Cited by:  Papers (15)
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Anode surface temperature has a significant impact on the interruption capacity of a vacuum circuit breaker. The objective of this paper is to experimentally understand the decay process of anode surface temperature after extinguishing a high-vacuum arc with a large contact gap. The anode surface temperature after current zero was measured by a two-color pyrometer and arc modes observation was rec... View full abstract»

• ### Correction to “Production of 30-mm Wide DC-Driven Brush-Shaped Cold Plasmas and Simulation on its Discharge Process” [Jun 13 1658-1663]

Publication Year: 2014, Page(s): 1474
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In the above-named work, the affiliation of the first author is incorrect. It is corrected herein. View full abstract»

• ### Special issue on Z pinch plasmas

Publication Year: 2014, Page(s): 1475
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• ### Special issue on plasma science atmospheric pressure plasma jets and their applications

Publication Year: 2014, Page(s): 1476
| |PDF (778 KB)
• ### Special issue on plasma-assisted technologies

Publication Year: 2014, Page(s): 1477
| |PDF (694 KB)

## 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)