Controlling the betatron oscillations of a wakefield-accelerated electron beam by temporally asymmetric laser pulses

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3577566· OSTI ID:21537661

Nam, Inhyuk ^[1]; Hur, Min Sup ^[2]; Uhm, Han Sup ^[3]; Hafz, Nasr A. M.; Suk, Hyyong ^[4]

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1. Graduate Program of Photonics and Applied Physics, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712 (Korea, Republic of)
2. School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea, Republic of)
3. Electrophysics Department, Kwangwoon University, Seoul 139-701 (Korea, Republic of)
4. Advanced Photonics Research Institute, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712 (Korea, Republic of)

Based on two-dimensional particle-in-cell simulations, we investigated the electron beam's transverse oscillations by temporally asymmetric laser pulses in laser wakefield acceleration. Of particular interest in this article are the effects of ultrashort laser pulses having sharp rising and slow falling time scales. In this situation, the accelerated electron beam interacts directly with the laser field and undergoes transverse oscillations due to a phase-slip with the laser field. This oscillation can be matched with the betatron oscillation due to the focusing force of the ions, which can lead to a large transverse oscillation amplitude due to the resonance between them. Furthermore, in this case, the electron beam can be microbunched at the laser wavelength, which may provide the possibility for generation of a coherent synchrotron radiation.

• OSTI ID: 21537661
• Journal Information: Physics of Plasmas, Vol. 18, Issue 4; Other Information: DOI: 10.1063/1.3577566; (c) 2011 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM BUNCHING
BETATRON OSCILLATIONS
ELECTRON BEAMS
LASER RADIATION
PLASMA SIMULATION
SYNCHROTRON RADIATION
TWO-DIMENSIONAL CALCULATIONS
WAKEFIELD ACCELERATORS
ACCELERATORS
BEAM DYNAMICS
BEAMS
BREMSSTRAHLUNG
DYNAMICS
ELECTROMAGNETIC RADIATION
LEPTON BEAMS
LINEAR ACCELERATORS
MECHANICS
OSCILLATIONS
PARTICLE BEAMS
RADIATIONS
SIMULATION