Output power variations in a plasma relativistic microwave amplifier during a 500-ns relativistic electron beam current pulse

2014 ◽  
Vol 40 (8) ◽  
pp. 640-649 ◽  
Author(s):  
P. S. Strelkov ◽  
V. P. Tarakanov ◽  
I. E. Ivanov ◽  
D. V. Shumeiko
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Current Pulse ◽  
Output Power ◽  
Relativistic Electron Beam ◽  
Beam Current ◽  
Electron Beam Current ◽  
Beam Current Pulse ◽  
Microwave Amplifier

scholarly journals Time behavior of an electron beam current pulse in the axial and peripheral zones of an anode in vacuum and gas-filled diodes

2021 ◽  
Vol 2064 (1) ◽  
pp. 012031
Author(s):  
D A Sorokin ◽  
M I Lomaev ◽  
A V Dyatlov ◽  
V F Tarasenko
Keyword(s):  
Electron Beam ◽  
Current Pulse ◽  
Current Density ◽  
Beam Current ◽  
Beam Current Density ◽  
Electron Beam Current ◽  
Time Behavior ◽  
Beam Current Pulse ◽  
Axial Part ◽  
A Current

Abstract The study of the time behavior of a current pulse of an electron beam generated during a high-voltage nanosecond discharge in gas-filled and vacuum diodes has been carried out. As follows from the experimental results, in both cases, the distribution of the beam current density in the plane of a grounded anode is non-uniform. The highest beam current density is recorded in the axial part of the anode. It was established that in the case of a gas-filled diode, ~ 2 ns after the onset of the beam current pulse, its shape in the axial anode zone changes relative to that in the peripheral one. It is assumed that the most probable reason for this is the effect of compensation of the charge of the beam electrons by the positive charge of ions arising in the ionization process in the paraxial zone.

Nanosecond response ’’gasket‐type’’ magnetic loop current monitor for relativistic electron beam current measurements

1979 ◽  
Vol 50 (2) ◽  
pp. 233-235 ◽  
Author(s):  
Richard L. Copeland ◽  
John L. Adamski ◽  
Wesley O. Doggett ◽  
David L. Morrow ◽  
Willard H. Bennett
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Magnetic Loop ◽  
Beam Current ◽  
Electron Beam Current ◽  
Loop Current

Relativistic electron beam current drive in the macrotor tokamak

1985 ◽  
Vol 25 (5) ◽  
pp. 537-542 ◽  
Author(s):  
H. Helava ◽  
G.A. Proulx ◽  
V. Bailey ◽  
B. Ecker ◽  
C. Eichenberger ◽  
...  
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Beam Current ◽  
Current Drive ◽  
Electron Beam Current

scholarly journals HIGH-CURRENT RELATIVISTIC ELECTRON BEAM FOCUSING IN PLASMA

2021 ◽  
pp. 30-34
Author(s):  
О.V. Manuilenko ◽  
A.V. Pashchenko ◽  
V.G. Svichensky ◽  
B.V. Zajtsev
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
External Magnetic Field ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Beam Current ◽  
High Current ◽  
Plasma Parameters ◽  
Beam Focusing ◽  
Envelope Equation

The analysis of the envelope equation for high-current relativistic electron beam propagation in plasma in an external uniform magnetic field is presented. The envelope equation is obtained in a Hamiltonian form with an effective potential, which depends from electron beam and plasma parameters, and external magnetic field. Hamiltonian aproach allows fully analyze the behavior of the beam envelope as a function of the beam current, beam energy, plasma density and conductivity, as well as on the external magnetic field and the initial beam angular momentum.

High-power microwave amplifier based on overcritical relativistic electron beam without external magnetic field

2015 ◽  
Vol 106 (15) ◽  
pp. 153503 ◽  
Author(s):  
S. A. Kurkin ◽  
N. S. Frolov ◽  
A. O. Rak ◽  
A. A. Koronovskii ◽  
A. A. Kuraev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
External Magnetic Field ◽  
Relativistic Electron ◽  
High Power ◽  
Relativistic Electron Beam ◽  
High Power Microwave ◽  
Microwave Amplifier ◽  
Power Microwave

scholarly journals Energy density distribution of a modulated electron beam in a source with a plasma cathode based on a low pressure arc

2021 ◽  
Vol 2064 (1) ◽  
pp. 012066
Author(s):  
V I Shin ◽  
P V Moskvin ◽  
M S Vorobyov ◽  
V N Devyatkov ◽  
N N Koval
Keyword(s):  
Electron Beam ◽  
Energy Density ◽  
Density Distribution ◽  
Current Pulse ◽  
Current Density ◽  
Beam Current ◽  
Beam Current Pulse ◽  
Energy Density Distribution ◽  
Electron Beam Generation ◽  
Arc Current

Abstract The article presents the results of studies devoted to the study of the energy density distribution in the amplitude-modulated regime of electron beam generation. It is shown that in the first ≈ 50 μs of the duration of the beam current pulse, its spatial rearrangement occurs, due to the development of the arc discharge current. Thus, the rearrangement of the arc current, which develops from the axis of the system, leads to an axial diving of the emission current density and the beam current density on the target. With the development of the arc current, the energy density on the target on the axis of the system decreases and after ≈ 50 μs takes on a steady-state value, which can change only as a result of a change in the conditions for generating an electron beam or the transition to a modulated regime of electron beam generation. It has been experimentally shown using calorimetric measurements that the shape of the electron beam current pulse with its amplitude modulation with a pulse duration of more than 100 μs has little effect on the distribution of the beam energy density in the target region.

scholarly journals RADIATION OF VIRTUAL CATHODE SEQUENCE IN MAGNETIZED RELATIVISTIC ELECTRON BEAM

2019 ◽  
pp. 90-93
Author(s):  
А.М. Gorban ◽  
Yu.F. Lonin ◽  
A.G. Ponomaryov
Keyword(s):  
Numerical Simulation ◽  
Electron Beam ◽  
Relativistic Electron ◽  
Current Density ◽  
Beam Energy ◽  
Relativistic Electron Beam ◽  
Virtual Cathode ◽  
Simulation Method ◽  
Beam Current ◽  
Radiation Characteristics

The numerical simulation method has been applied to investigate the characteristics of radiation from the sequence of two or three virtual cathodes (VC) which are formed in the magnetized plane relativistic electron beam. Between such VC the electric field and beam current feedbacks occur. The spectral electromagnetic radiation characteristics of different vircator configurations and their dependences on the current density and beam energy spread are determined.

Incubation Rate of Zooplankton Egg after Irradiation of Pulsed Intense Relativistic Electron Beam

2015 ◽  
Vol 135 (6) ◽  
pp. 355-356 ◽  
Author(s):  
Takahiro Kazetoh ◽  
Kazumasa Takahashi ◽  
Toru Sasaki ◽  
Takashi Kikuchi ◽  
Nob. Harada ◽  
...  
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam
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