Vacuum electron acceleration by using two variable frequency laser pulses

Journal Article · Sun Dec 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4858898· OSTI ID:22218372

Saberi, H.; Maraghechi, B. ^[1]

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1. Department of Physics, Amirkabir University of Technology, 15875-4413 Tehran (Iran, Islamic Republic of)

A method is proposed for producing a relativistic electron bunch in vacuum via direct acceleration by using two frequency-chirped laser pulses. We consider the linearly polarized frequency-chiped Hermit-Gaussian 0, 0 mode lasers with linear chirp in which the local frequency varies linearly in time and space. Electron motion is investigated through a numerical simulation using a three-dimensional particle trajectory code in which the relativistic Newton's equations of motion with corresponding Lorentz force are solved. Two oblique laser pulses with proper chirp parameters and propagation angles are used for the electron acceleration along the z-axis. In this way, an electron initially at rest located at the origin could achieve high energy, γ=319 with the scattering angle of 1.02{sup ∘} with respect to the z-axis. Moreover, the acceleration of an electron in different initial positions on each coordinate axis is investigated. It was found that this mechanism has the capability of producing high energy electron microbunches with low scattering angles. The energy gain of an electron initially located at some regions on each axis could be greatly enhanced compared to the single pulse acceleration. Furthermore, the scattering angle will be lowered compared to the acceleration by using laser pulses propagating along the z-axis.

• OSTI ID: 22218372
• Journal Information: Physics of Plasmas, Vol. 20, Issue 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
43 PARTICLE ACCELERATORS
ACCELERATION
BEAM BUNCHING
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
ELECTRON BEAMS
ELECTRONS
EQUATIONS OF MOTION
GAIN
LASER RADIATION
LASER-PRODUCED PLASMA
LASERS
LORENTZ FORCE
MODULATION
NUMERICAL ANALYSIS
PLASMA SIMULATION
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
THREE-DIMENSIONAL CALCULATIONS