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FEATURED STORIES - MAY 2016

"Strongly Eccentric Rotational Plasma Lamina Observed in a 2.45-GHz Hydrogen Discharge"

by Osvaldo Daniel Cortázar and Ana Megía-Macías



A novel strongly eccentric rotating plasma lamina structure subtending approximately an angle of 120° is reported in a 2.45-GHz driven electron cyclotron resonance hydrogen discharge in the proximity of the chamber wall. Shape and rotation frequencies depend critically on the embedded magnetic field distribution in the plasma chamber as well as on neutral gas pressure and microwave power. The discharge denominated test-bench for ion-sources plasma studies includes a transparent doubled shielded quartz window that keeps the microwave resonance condition. more...
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"On the Mechanism of Pulsed Electron Beam Production From an Uninterrupted Plasma Cathode"

by David R. Boris, Christopher D. Cothran, Christopher S. Compton, William E. Amatucci, and Scott G. Walton


Electron extraction from a hollow cathode plasma discharge through a primary anode, biased with a dc accelerating potential, is modulated to produce pulsed or continuous electron beams without the interruption of the plasma cathode discharge. This is achieved with the addition of a secondary anode, within the hollow cathode. When this secondary anode is electrically connected to the primary anode, beam production ceases; when the secondary anode is electrically isolated, beam production resumes. Previous works demonstrated the utility and operation of this device; however, the precise physical principles allowing beam modulation were not well characterized. In this paper, we show that beam modulation can be understood in terms of changes in plasma potential within the hollow cathode that either promote or prevent the formation of an electron sheath at the exit of the hollow cathode, which is mediated by the electrical state of the secondary anode. more...
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A PUBLICATION OF THE IEEE NUCLEAR AND PLASMA SCIENCES SOCIETY

MAY 2016   |  VOLUME 44  |  NUMBER 5  |  ITPSBD  |  (ISSN 0093-3813)

REGULAR PAPERS
Microwave Generation and Microwave-Plasma Interaction
Strongly Eccentric Rotational Plasma Lamina Observed in a 2.45-GHz Hydrogen Discharge . . . . . . . . . . . . O. D. Cortázar and A. Megía-Macías
A Magnetically Insulated Transmission Line Oscillator With Metal Array Cathode . . . . . . . . . . . . F. Qin, D. Wang, S. Xu, Y. Zhang, and Z.-K. Fan
Design and Simulation Study of the HPM Oscillator-Reltron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M. Mahto and P. K. Jain
Investigation of the Influence of Electron Beam Quality on the Operation in 0.42-THz Second Harmonic Gyrotron . . . . . . . . . . . . Q. Zhao, S. Yu,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Y. Zhang, T. Zhang, Y. Yang, Z. Wang, and X. Li
Analysis and Suppression of the Higher Order Competition Modes in Ku-Band Magnetically Insulated Transmission Line Oscillator . . . . . . . . .
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T. Jiang, J. Zhang, J. He, Z. Li, and J. Ling

Charged Particle Beams and Sources
On the Mechanism of Pulsed Electron Beam Production From an Uninterrupted Plasma Cathode . . . . . . . . . . . . . . .D. R. Boris, C. D. Cothran,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. C. S. Compton, W. E. Amatucci, and S. G. Walton

High Energy Density Plasmas and Their Interactions
Terahertz Generation by Intense Femtosecond Gaussian Laser Pulse in Ripple Density Plasma . . . . . . . . . . . . . . . . . . . . S. Kumar, R. K. Singh,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .and R. P. Sharma

Industrial, Commercial, and Medical Applications of Plasmas
A Nanosecond Surface Dielectric Barrier Discharge Operating Under Altitude Conditions for Aeronautics Applications . . . . . . . . . . . N. Benard,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . K. D. Bayoda, A. C. Aba'a Ndong, and E. Moreau

Pulsed Power Science and Technology
Asymmetric Multistage Synchronous Inductive Coilgun for Length Reduction, Higher Muzzle Velocity, and Launching Time Reduction . . . . . . .
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M. A. Abdalla and H. M. Mohamed
Analysis and Process of B-Dot Waveforms in a High-Current Injector . . . . . . . . . H. Zhang, L. Xia, Y. Shen, Q. Li, Y. Wang, L. Zhang, and K. Liu
Nanosecond Pulse Generator Based on an Unbalanced Blumlein-Type Multilayered Microstrip Transmission Line and Solid-State
      Switches
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Y. Mi, Y. Zhang, J. Wan, C. Yao, and C. Li
Simulation Analysis of a Pulsed Compact FLTD System for Large-Area Hard X-Ray Sources . . . . . . . . . . . . . . . . . . . . . P. Zhang, J. Sun, F. Sun,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Qiu, J. Sun, Y. Hu, and P. Cong

A Lithium Niobate Piezoelectric Transformer Resonant High-Voltage Power Source . . . . . . . . . . . . . . . . . . . . . . . P. Norgard and S. D. Kovaleski
Radial Compression to Transiently Achieve Higher Beta Poloidal in a Tokamak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .L. Qu and G. Li
Effect of Different Environmental Dielectrics on the Pulse-Forming Characteristics of Solid-State Meander Pulse-Forming Line . . . . . . . . . . . . . .
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L. Wang, J. Liu, and Q. Zhang
Design of an Ultraprecise 127-MW/3-μs Solid-State Modulator With Split-Core Transformer . . . . . . . . . . . . . . . . . . . . . . . D. Gerber and J. Biela
Research on a Novel High-Power Semi-Insulating GaAs Photoconductive Semiconductor Switch . . . . . . . . . . . . . . . . L. Chongbiao, F. Yuanwei,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H. Yupeng, L. Hongtao, and L. Xiqin

Space Plasmas
Ion Acoustic Solitary Waves in Degenerate Electron-Ion Plasmas . . . . . . . . . . . . . . . . . . . .S. K. El-Labany, W. F. El-Taibany, A. E. El-Samahy,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A. M. Hafez, and A. Atteya


Other Topics in Plasma Science
Force Study of Single-Sided Linear Induction Motor . . . . . . . . . . . . . . . . . . . . .A. Zare-Bazghaleh, M. R. Meshkatoddini, and E. Fallah-Choolabi
Research on Energy Loss Distribution of an Augmented Railgun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Y. Lou, G. Wan, Y. Jin, B. Tang, and B. Li

Special Issue on Dusty Plasmas 2015
Effect of Fermi Pressure and Bohm Potential on Jeans Instability of Quantum Dusty Plasma in Presence of Polarization Force . . . . . . . . . . . . .
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. Sharma, S. Jain, and R. P. Prajapati
Synthesis of Microparticles With Narrow Size Distribution in the Plasma of Arc and Radio-Frequency Discharges . . . . . . . . . . . D. G. Batryshev,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T. S. Ramazanov, M. K. Dosbolayev, M. T. Gabdullin, and Y. Yerlanuly

Vacuum Compatibility of 3-D-Printed Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .W. F. Rivera and C. A. Romero-Talamás

Special Issue on Selected Papers from EAPPC 2014
Difference of Cell Death of Budding Yeast for Frequency Components of Pulsed Electric Field . . . . . . . . . . . . . . . . R. Kageyama, Y. Kobayashi,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . K. Tamura, K. Saito, and Y. Minamitani


Special Issue on Electromagnetic Launchers
Trigger Control Research of Electromagnetic Coil Launcher Based on Real-Time Velocity Measurement . . . . . . . . . . . . . . . . . M. Wang, Y. Cao,
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C. Wang, H. Wang, and J. Chen


ANNOUNCEMENTS
Call for Papers-Special Issue for Selected Papers from EAPPC/BEAMS/MEGAGAUSS 2016
Call for Papers-Special Issue on Spacecraft Charging Technology 2017


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