Laser wakefield acceleration in magnetized plasma

Abstract

A one-dimensional numerical model to study the evolution of longitudinal electrostatic wakefields, generated by propagation of a circularly polarized laser pulse in magnetized plasma has been presented. The direction of the external magnetic field is considered to be along as well as opposite to the axis of propagation of the laser pulse. Further, two-dimensional particle-in-cell code is used to obtain the generated wakefields. Separatrix curves are plotted to study the trapping and energy gain of an externally injected test electron, by the generated electrostatic wakefields, in the relativistic regime. Under appropriate conditions, an enhancement in the peak energy of an externally injected electron in magnetized plasma, as compared to the unmagnetized case, has been observed.

Quasi monoenergetic electron bunch generation by frequency variation laser pulse in magnetized plasma

“…(25)(26)(27)(28) in (24) leads to a relation for pulse profile in term of n and D. Then we obtain aðn; DÞ for any Gaussian chirped parameter.…”

“…Although several techniques have been proposed to this end, including the use of microwave pulses [13][14][15] through changing pulse shape [16,17], through using tapered plasma channel [18,19] and chirped laser pulse [20,21], and through external magnetic field [24][25][26][27], this paper explores the use of chirped laser pulse along with external magnetic field to excite wakefield. Previous investigations (see Ref.…”

Dispersion relation for space-charge waves in a warm plasma-filled elliptical waveguide in an infinite axial magnetic field

“…However, the space charge effects are very important because it is suitable for accelerating charged particles. [24][25][26] In this paper, we calculate dispersion relation for space-charge waves in the warm plasma-filled elliptical waveguide in an infinite axial magnetic field. In addition, we investigate dispersion relation in the quasi-static approximation in a cold magnetized plasma elliptical waveguide.…”

Wakefield generation and electron acceleration by intense super-Gaussian laser pulses propagating in plasma

“…Surfing the generated plasma wave, an externally injected test electron can experience much higher accelerating gradients than a conventional radio frequency linac could provide. A number of schemes have been proposed for the generation of large amplitude plasma waves and development of laser-plasma based accelerators that includes plasma beat wave accelerator (PBWA) (Dyson & Dangor, 1991;Tochitsky et al, 2004), plasma wakefield accelerator (PWFA) (Chen et al, 1985), self-modulated laser wakefield accelerator (SMLWFA) Schroeder et al, 2003), and laser wakefield accelerator (LWFA) (Faure et al, 2006;Jha et al, 2012).…”