Self-truncated ionization injection and consequent monoenergetic electron bunches in laser wakefield acceleration

Abstract

The ionization-induced injection in laser wakefield acceleration has been recently demonstrated to be a promising injection scheme. However, the energy spread controlling in this mechanism remains a challenge because continuous injection in a mixed gas target is usually inevitable. Here we propose that by use of certain initially unmatched laser pulses, the electron injection can be constrained to the very front region of the mixed gas target, typically in a length of a few hundreds micro meters determined by laser-driven bubble deformation. Under some optimized conditions, the injection region is well limited within $200\mu \mathrm{m}$ and the electron beam with central energy of 383 MeV, energy spread of 3.33% in FWHM, normalized emittance of 3.12 mm mrad and charge of 14.58 pC can be obtained according to particle-in-cell simulations. Both multi-dimensional simulations and theoretical analysis illustrate the effectiveness of this scheme.

5 pages, 5 figures

References in corpus (1)

• Generating multi-GeV electron bunches using single stage laser wakefield acceleration in a 3D nonlinear regime

Cited by in corpus (14)

• Multi-chromatic narrow-energy-spread electron bunches from laser wakefield acceleration with dual-color lasers
• Demonstration of a compact plasma accelerator powered by laser-accelerated electron beams
• Ionization injection in a laser wakefield accelerator subject to a transverse magnetic field
• Numerical modeling of laser tunneling ionization in Particle in Cell Codes with a laser envelope model
• High quality electron beam acceleration by ionization injection in laser wakefields with mid-infrared dual-color lasers
• Direct laser acceleration of electrons in high-Z gas target and effect of threshold plasma density on electron beam generation
• Injection induced by coaxial laser interference in laser wakefield accelerators
• Positron acceleration via laser-augmented blowouts in two-column plasma structures
• High quality beam produced by tightly focused laser driven wakefield accelerators
• Plasma Lenses for Relativistic Laser Beams in Laser Wakefield Accelerators
• Scissor-cross ionization injection in laser wakefield accelerators
• Restoring betatron phase coherence in a beam-loaded laser-wakefield accelerator
• Characterization of ionization injection in gas mixtures irradiated by sub-petawatt class laser pulses
• High Flux Electron Beams from Laser Wakefield Accelerators Driven by Petawatt Lasers