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Acceleration and evolution of a hollow electron beam in wakefields driven by a Laguerre-Gaussian laser pulse
- Publication Year :
- 2016
-
Abstract
- We show that a ring-shaped hollow electron beam can be injected and accelerated by using a Laguerre-Gaussian laser pulse and ionization-induced injection in a laser wakefield accelerator. The acceleration and evolution of such a hollow, relativistic electron beam are investigated through three-dimensional particle-in-cell simulations. We find that both the ring size and the beam thickness oscillate during the acceleration. The beam azimuthal shape is angularly dependent and evolves during the acceleration. The beam ellipticity changes resulting from the electron angular momenta obtained from the drive laser pulse and the focusing forces from the wakefield. The dependence of beam ring radius on the laser-plasma parameters (e.g., laser intensity, focal size, and plasma density) is studied. Such a hollow electron beam may have potential applications for accelerating and collimating positively charged particles.
- Subjects :
- Physics
Beam diameter
Ion beam
business.industry
Physics::Optics
Condensed Matter Physics
Plasma acceleration
Laser
01 natural sciences
Beam parameter product
010305 fluids & plasmas
law.invention
Optics
Physics::Plasma Physics
law
0103 physical sciences
Physics::Accelerator Physics
Relativistic electron beam
Laser beam quality
Atomic physics
010306 general physics
business
Beam (structure)
QC
Subjects
Details
- Language :
- English
- ISSN :
- 1070664X
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....7bb8e011442f8602139fa16923ceadc3