Wakefield generation in one-dimensional LWFA

Vanchinkhuu, J
Bilikmen, S
The generation of wakefields in near-critical density plasma by a short laser pulse is considered. The equations describing the plasma response to the acting laser pulse and the Hamiltonian of an electron in the wakefield are derived by using the Hamilton-Jacobi equation for the cases of nu (g) similar or equal to nu (p) similar or equal to w = c w < c (e is the speed of light). The equations are solved analytically in two cases for a square-shaped laser pulse. The plasma potential inside the laser pulse and the wakefield potential excited by the laser pulse are obtained. The optimal length of the driving laser pulse and the wavelength of the wake are expressed by the group velocity.


Wakefield by a short laser pulse
Vanchinkhuu, J; Bilikmen, S (2000-09-07)
The equation describing the plasma response to the acting laser pulse is derived by using the Hamilton-Jacobi equation for the case nu (g) approximate to nu (ph) approximate to w less than or equal to c. The equation is solved numerically for one-dimensional Gaussian pulse and analytically for a square-shaped laser pulse. It is shown that the amplitude and the wavelength of the wake wave depend strongly on the amplitude and the length of the laser pulse.
Limits on laser wakefield accelerators
Yedierler, Burak (1999-04-01)
The longitudinal and radial wakefields produced by a single laser pulse in a plasma are calculated. The limits on the laser wakefield acceleration because of diffraction, optical guiding, and energy loss due to radiation are examined. In particular for a bi-Gaussian laser beam, the energy gain about 4.6 GeV/cm s is estimated. A general constraint on the plasma density is presented. All the limits are compared and a localized density channel of width 4.6 x 10(-5) cm is proposed. (C) 1999 American Institute o...
Design and implementation of a low emittance high power thermionic DC electron gun
Sezer, Mustafa; Güler, Ali Murat; Department of Physics (2021-2-8)
In this thesis, a thermionic electron gun generating low emittance and the high power electron beam is designed. The thermionic cathode made of a LaB6 single crystal is chosen as a thermionic emitter because of its properties ensuring high electron beam current in lower temperatures which provide lower emittance. The main goal of the gun design is to achieve a high DC beam current and low emittance. Computer Sim- ulation Technology (CST) and MATLAB are used to design the gun and optimize electrode shapes an...
Curvature aided long range propagation of short laser pulses in the atmosphere
Yedierler, Burak (AIP Publishing, 2013-3)
The pre-filamentation regime of propagation of a short and intense laser pulse in the atmosphere is considered. Spatiotemporal self-focusing dynamics of the laser beam are investigated by calculating the coupled differential equations for spot size, pulse length, phase, curvature, and chirp functions of a Gaussian laser pulse via a variational technique. The effect of initial curvature parameter on the propagation of the laser pulse is taken into consideration. A method relying on the adjustment of the init...
Self-synchronization of the integrate-and-fire pacemaker model with continuous couplings
Akhmet, Marat (Elsevier BV, 2012-02-01)
The integrate-and-fire cardiac pacemaker model of the pulse coupled oscillators was introduced by C. Peskin. Due to the function of the pacemaker, two famous synchronization conjectures for identical and not identical oscillators were formulated. There are still many issues related to the nature and types of couplings. The couplings may be impulsive, continuous, delayed or advanced, and oscillators may be locally or globally connected. Consequently, it is reasonable to consider various ways of synchronizati...
Citation Formats
J. Vanchinkhuu and S. Bilikmen, “Wakefield generation in one-dimensional LWFA,” EUROPEAN PHYSICAL JOURNAL D, pp. 367–371, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65550.