Перегляд за автором "Bondar, D.S."

Результати 1-11 з 11

A method for maintaining the acceleration rate and increasing the energy of self-injected bunch due to the use of inhomogeneous plasma

Bondar, D.S.; Maslov, V.I.; Onishchenko, I.N. (Problems of Atomic Science and Technology, 2023)

The paper considers the process of excitation of a wakefield in a plasma by a laser pulse. The plasma density corresponds to the density of free electrons in the metal. A method is demonstrated for keeping self-injected ...
Control of characteristics of self-injected and accelerated electron bunch in plasma by laser pulse shaping on radius, intensity and shape

Maslov, V.I.; Bondar, D.S.; Grigorencko, V.; Levchuk, I.P.; Onishchenko, I.N. (Вопросы атомной науки и техники, 2019)

At the laser acceleration of self-injected electron bunch by plasma wakefield it is important to form bunch with small energy spread and small size. It has been shown that laser-pulse shaping on radius, intensity and shape ...
Dependence of wakefield excitation in plasma by non-resonant sequence of electron bunches on their lengths

Bondar, D.S.; Boychenko, A.P.; Maslov, V.I.; Onishchenko, I.N.; Ovsiannikov, R.T. (Вопросы атомной науки и техники, 2021)

The present paper describes the results of numerical simulation (using 2d3v code LCODE) of the regime, when the wakefield is excited at maximum growth rate in the plasma by a nonresonant sequence of relativistic electron ...
Dynamics of self-injected electron bunches at their acceleration by laser pulse in plasma

Bondar, D.S.; Levchuk, I.P.; Maslov, V.I.; Nikonova, S.; Onishchenko, I.N. (Вопросы атомной науки и техники, 2017)

Dynamics of self-injected electron bunches has been numerically simulated in blowout regime at self-consistent change of electron bunch acceleration by plasma wakefield, excited by a laser pulse, to additional their ...
Effect of transition radiation and dispersion spreading at achievement of a large transformer ratio of driver-bunch energy into wakefield in a dielectric resonator accelerator

Maslov, V.I.; Bondar, D.S.; Onishchenko, I.N.; Papkovich, V.G. (Вопросы атомной науки и техники, 2019)

Possibility of increase of transformer ratio TR in the case of the profiled sequence of bunches at their injection in a two-beam electron-positron dielectric-resonator collider is considered. Unlike considered earlier the ...
Excitation of wakefield by a laser pulse in a metallicdensity electron plasma

Bondar, D.S.; Maslov, V.I.; Levchuk, I.P.; Onishchenko, I.N. (Вопросы атомной науки и техники, 2018)

Since it is possible to form laser pulses with a frequency much larger than the frequency of visible light, Prof. T.Tajima proposed using such pulse to accelerate the particles at its injection into the crystal. Here, the ...
Homogeneous focusing field for short relativistic electron bunches in plasma

Maslov, V.I.; Levchuk, I.P.; Bondar, D.S.; Onishchenko, I.N. (Вопросы атомной науки и техники, 2020)

Plasma wake lens in which all short relativistic electron bunches of sequence are focused identically and uniformly is studied analytically and by numerical simulation. For two types of lenses necessary parameters of focused ...
Maximum transformer ratio at wakefield excitation at blowout regime in plasma by electron bunch under semi-gaussian charge distribution

Bondar, D.S.; Maslov, V.I.; Onishchenko, I.N. (Вопросы атомной науки и техники, 2020)

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 ...
Plasma lens for electron and positron beams

Bondar, D.S.; Maslov, V.I.; Onishchenko, I.N.; Ovsiannikov, R.T. (Вопросы атомной науки и техники, 2021)

Focusing of both electron and positron bunches in electron-positron collider is necessary. When long electron/positron bunch is injected into the plasma, the focusing force is not uniform but oscillated. It is shown that ...
Plateau formation on accelerating wakefield for electron-witness-bunch and on decelerating wakefield for driver-bunches in a plasma

Maslov, V.I.; Ovsiannikov, R.T.; Bondar, D.S.; Levchuk, I.P.; Onishchenko, I.N. (Вопросы атомной науки и техники, 2021)

Plasma wakefield acceleration promises compact sources of high-brightness relativistic electron and positron beams. Applications (particle colliders and free-electron lasers) of plasma wakefield accelerators demand low ...
Simulation of plasma wakefield focusing and self-focusing of a short sequence of electron bunches depending on the bunch length, shape and distance between bunches

Bondar, D.S.; Maslov, V.I.; Onishchenko, I.N. (Problems of Atomic Science and Technology, 2022)

By using two-dimensional numerical simulation, the ratio between the effects of wakefield focusing and self-focusing during the propagation of a short sequence of electron bunches in plasma has been simulated. Cases of ...

Результати 1-11 з 11

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Перегляд за автором "Bondar, D.S."

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