scholarly journals MAXIMUM TRANSFORMER RATIO AT WAKEFIELD EXCITATION AT BLOWOUT REGIME IN PLASMA BY ELECTRON BUNCH UNDER SEMI-GAUSSIAN CHARGE DISTRIBUTION

2020 ◽  
pp. 62-67
Author(s):  
D.S. Bondar ◽  
V.I. Maslov ◽  
I.N. Onishchenko
Keyword(s):  
Numerical Simulation ◽  
Relativistic Electron ◽  
Charge Distribution ◽  
Electron Bunch ◽  
Maximum Value ◽  
Transformer Ratio ◽  
Constant Charge

Using 2d3v code LCODE, the numerical simulation of nonlinear wakefield excitation in plasma by shaped relativistic electron bunch with charge distribution, which increases according to Gaussian charge distribution up to the maximum value, and then decreases sharply to zero, has been performed. Transformer ratio, as the ratio of the maximum accelerating field to the maximum decelerating field inside the bunch, and accelerating the wakefield have been investigated taking into account nonlinearity of the wakefield. The dependence of the transformer ratio and the maximum accelerating field on the length of the bunch was investigated with a constant charge of the bunch. It was taken into account that the length of the nonlinear wakefield increases with increasing length of the bunch. It is shown that the transformer ratio reaches its maximum value for a certain length of the bunch. The maximum value of the transformer ratio reaches six as due to the profiling of the bunch, and due to the nonlinearity of the wakefield.

scholarly journals INCREASE OF EFFICIENCY OF ACCELERATION OF THE TEST ELECTRON BUNCH BY SEQUENCE OF ELECTRON BUNCHES IN THE RECTANGULAR DIELECTRIC RESONATOR AT PLASMA FILLING

2019 ◽  
pp. 53-57
Author(s):  
P.I. Markov ◽  
I.N. Onishchenko ◽  
G.V. Sotnikov
Keyword(s):  
Numerical Simulation ◽  
Electric Field ◽  
Relativistic Electron ◽  
Plasma Density ◽  
Dielectric Resonator ◽  
Electron Bunch ◽  
Linear Growth ◽  
Energy Gain ◽  
Electron Bunches ◽  
Test Electron

A result of numerical simulation of acceleration of the test electron bunch following a sequence of relativistic electron bunches in the rectangular dielectric resonator when filling the drift channel with plasma of different density is provided. We have found out that at change of plasma density the linear growth of energy gain of test bunch electrons is observed. It is connected with structure ordering of longitudinal accelerating electric field in the resonator and also with increase in its amplitude. It is due to that at periodic injection of drive bunches on resonator axis the areas with the increased plasma electrons density are formed.

Numerical simulation of relativistic electron energy spectrum measurement based on graphite slices calorimeter

2010 ◽  
Vol 22 (4) ◽  
pp. 918-922
Author(s):  
张信军 Zhang Xinjun ◽  
王亮平 Wang Liangping ◽  
呼义翔 Hu Yixiang ◽  
吴撼宇 Wu Hanyu ◽  
李岩 Li Yan
Keyword(s):  
Numerical Simulation ◽  
Energy Spectrum ◽  
Relativistic Electron ◽  
Electron Energy ◽  
Electron Energy Spectrum ◽  
Spectrum Measurement

Influence of energy losses on charge distribution of fast ions passing through solid matter

2020 ◽  
Vol 34 (14) ◽  
pp. 2050150
Author(s):  
Yu. A. Belkova ◽  
N. V. Novikov ◽  
Ya. A. Teplova
Keyword(s):  
Charge Distribution ◽  
Cross Sections ◽  
Heavy Ions ◽  
Nuclear Charge ◽  
Target Thickness ◽  
Energy Losses ◽  
Ion Energy ◽  
Fast Ions ◽  
Maximum Value ◽  
Ion Energy Losses

The charge distribution of fast multicharged ions passing through a matter is studied taking ion energy losses into account. Within the framework of the proposed method, we show that the changes in the charge exchange cross-sections, caused by the decreasing of ion energy, affect the process of the formation of the equilibrium ion charge distribution. The target thickness, required for obtaining the equilibrium ion charge distribution, reaches the maximum value for ions without electrons and hydrogen-like ions. The equilibrium target thickness increases with increasing in ion nuclear charge and energy and for fast heavy ions becomes comparable with their range.

Sign in / Sign up

Export Citation Format

Share Document