scholarly journals Particle-in-cell simulations of electron beam control using an inductive current divider

2015 ◽  
Vol 22 (11) ◽  
pp. 113108 ◽  
Author(s):  
S. B. Swanekamp ◽  
J. R. Angus ◽  
G. Cooperstein ◽  
P. F. Ottinger ◽  
A. S. Richardson ◽  
...  
Keyword(s):  
Electron Beam ◽  
Beam Control ◽  
Particle In Cell ◽  
Current Divider

Electron beam control of IMPATT diodes

1972 ◽  
Vol 15 (1) ◽  
pp. 140-142 ◽  
Author(s):  
A.C. Sanderson ◽  
A.G. Jordan
Keyword(s):  
Electron Beam ◽  
Beam Control ◽  
Impatt Diodes

Design Sheet Beam Gun for THz Traveling-Wave Tube

2014 ◽  
Vol 541-542 ◽  
pp. 470-473 ◽  
Author(s):  
Zhan Liang Wang ◽  
Yu Bin Gong ◽  
Hua Rong Gong ◽  
Jin Jun Feng ◽  
Xiong Xu
Keyword(s):  
Electron Beam ◽  
Traveling Wave ◽  
Design Method ◽  
Terahertz Wave ◽  
Wave Radiation ◽  
Traveling Wave Tube ◽  
Wave Tube ◽  
Electron Device ◽  
Particle In Cell ◽  
Sheet Electron Beam

The Sheet Electron Beam Vacuum Electron Device is an Attractive Choice for Generating High Power Millimeter/terahertz Wave Radiation. the Sheet Electron Beam Gun is a Key Component for the Sheet Beam Vacuum Electron Device. in this Paper, a Novel Sheet Electron Beam Gun was Proposed for a Terahertz Traveling-Wave Tube. the Theories of Sheet Beam Gun are Deduced Based on the Round Beam Gun Theories. the Track of 24.5kV, 1A, 0.4mm8mm Sheet Beam is Gained through 3D Particle-in-Cell Simulation and the Theories are Verified. the Investigation Results Show that, the Design Method of the Sheet Beam Gun is Easy and Reliable.

scholarly journals Brief Communication: The double layer in the separatrix region during magnetic reconnection

2015 ◽  
Vol 22 (2) ◽  
pp. 167-171
Author(s):  
J. Guo ◽  
B. Yu
Keyword(s):  
Electron Beam ◽  
Magnetic Reconnection ◽  
Double Layer ◽  
Particle In Cell ◽  
Acoustic Instability ◽  
Ion Acoustic ◽  
Evolution Stage ◽  
Spatial Size ◽  
Electron Holes ◽  
Observation Results

Abstract. With two-dimensional (2-D) particle-in-cell (PIC) simulations we investigate the evolution of the double layer (DL) driven by magnetic reconnection. Our results show that an electron beam can be generated in the separatrix region as magnetic reconnection proceeds. This electron beam could trigger the ion-acoustic instability; as a result, a DL accompanied with electron holes (EHs) can be found during the nonlinear evolution stage of this instability. The spatial size of the DL is about 10 Debye lengths. This DL propagates along the magnetic field at a velocity of about the ion-acoustic speed, which is consistent with the observation results.

scholarly journals PIC-моделирование генерации CВЧ-излучения в отражательном триоде радиального типа с расходящимся замагниченным электронным пучком

2020 ◽  
Vol 46 (4) ◽  
pp. 18
Author(s):  
А.Е. Дубинов ◽  
В.П. Тараканов
Keyword(s):  
Electron Beam ◽  
Microwave Radiation ◽  
Peak Power ◽  
Radiation Spectrum ◽  
Beam Current ◽  
Beam Dynamics ◽  
Particle In Cell ◽  
Cell Simulation ◽  
Electron Beam Dynamics

This paper presents particle-in-cell simulation of the reflex triode with radially diverging magnetized electron beam. Dynamics of the electron beam and generation characteristics of the reflex triode are studied in the work. It is shown that two virtual cathodes are formed in it. It was calculated that the peak power of the microwave radiation reaches P=19 MW at the beam current I0=5 kA and potential of the cathode Uc=‒100 kV. There is a peak in the microwave radiation spectrum at the frequency ν = 5.2 GHz.

scholarly journals 1-D particle-in-cell simulations of electron acoustic solitary structures in an electron beam-plasma

AIP Advances ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 025029 ◽  
Author(s):  
A. A. Abid ◽  
Quanming Lu ◽  
M. N. S. Qureshi ◽  
X. L. Gao ◽  
Huayue Chen ◽  
...  
Keyword(s):  
Electron Beam ◽  
Particle In Cell ◽  
Beam Plasma ◽  
Solitary Structures ◽  
Electron Acoustic ◽  
Electron Beam Plasma

Electron-beam control of the radiation emitted by injection light sources

1981 ◽  
Vol 11 (5) ◽  
pp. 674-675
Author(s):  
O V Bogdankevich ◽  
S A Bondar' ◽  
N A Borisov ◽  
D V Galchenkov ◽  
V F Pevtsov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Beam Control

Simulation of bunched electron-beam acceleration by the cylindrical TE113 microwave field

2019 ◽  
Vol 34 (36) ◽  
pp. 1942030
Author(s):  
E. A. Orozco ◽  
J. D. González ◽  
J. R. Beltrán ◽  
V. E. Vergara
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Microwave Field ◽  
Inhomogeneous Magnetic Field ◽  
X Ray ◽  
Particle In Cell ◽  
Magnetic Field Profile ◽  
Detailed Simulation ◽  
The Magnetic Field ◽  
Particle Approximation

We report a detailed simulation of a bunched electron-beam accelerated in a TE[Formula: see text] cylindrical cavity immersed in a static inhomogeneous magnetic field using a relativistic full electromagnetic particle-in-cell (PIC). This type of acceleration concept is known as Spatial AutoResonance Acceleration (SARA) in which the magnetic field profile is such that it keeps the electron-beam in the acceleration regime along their trajectories. In this work, the numerical experiments are carried out including a bunched electron-beam with the concentrations in the range [Formula: see text]–[Formula: see text][Formula: see text]cm[Formula: see text] in a TE[Formula: see text] cylindrical microwave field, at a frequency of 2.45 GHz and an amplitude of 15 kV/cm. The electron energy reaches values up to 250 keV without significant unfocusing effect that can be used as a basis to produce hard X-ray. Additionally, a comparison between the data obtained from the full electromagnetic PIC simulations and the results derived from the relativistic Newton–Lorentz equation in a single particle approximation is carried out.

Optical and electron-beam control of semiconductor switches

2003 ◽  
Author(s):  
K. Schoenbach ◽  
V. Lakdawala ◽  
S. Ko ◽  
M. Mazzola ◽  
D. Stoudt ◽  
...  
Keyword(s):  
Electron Beam ◽  
Beam Control ◽  
Semiconductor Switches

EARLY OUT-OF-EQUILIBRIUM BEAM-PLASMA EVOLUTION: POSSIBLE FORMATION OF A BEAM RING STRUCTURE

2007 ◽  
Vol 21 (03n04) ◽  
pp. 633-636 ◽  
Author(s):  
M. C. FIRPO ◽  
A. F. LIFSCHITZ
Keyword(s):  
Electron Beam ◽  
Transverse Isotropy ◽  
Ring Structure ◽  
Skin Depth ◽  
Beam Radius ◽  
Particle In Cell ◽  
Beam Plasma ◽  
Initial Stage ◽  
Filamentation Instability ◽  
Beam Edge

We solve analytically the out-of-equilibrium initial stage that follows the injection of a radially finite electron beam into a plasma at rest and test it against particle-in-cell simulations. For initial large beam edge gradients and not too large beam radius, compared to the electron skin depth, the electron beam is shown to evolve into a ring structure. For low enough transverse temperatures, filamentation instability eventually proceeds and saturates when transverse isotropy is reached. The analysis accounts for the variety of very recent experimental beam transverse observations.

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