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Hur, Min Sup
Computational Plasma Lab
Research Interests
  • Laser-Plasma Electron Accelerator and Table-top Femto Hard X-ray generation

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Large transverse motion and micro-bunching of trapped electrons in a wakefield accelerator driven by temporally-asymmetric laser pulses

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Title
Large transverse motion and micro-bunching of trapped electrons in a wakefield accelerator driven by temporally-asymmetric laser pulses
Author
Uhm, Han SupNam, InhyukHur, Min SupSuk, Hyyong
Keywords
Betatron oscillation; Microbunching; Synchrotron radiation; Wakefield acceleration
Issue Date
201306
Publisher
ELSEVIER SCIENCE BV
Citation
CURRENT APPLIED PHYSICS, v.13, no.4, pp.645 - 651
Abstract
The transverse oscillatory motion of trapped electrons under the influence of the laser fields trailing the temporally-asymmetric driving laser pulse was investigated with a theoretical model of the quasi-steady state solution of trapped electron dynamics in the cavity. Our studies show that the transverse oscillation of electrons accelerated in the ion cavity can increase drastically due to the resonance with the laser field of the tail of the temporally-asymmetric pulse. The motion of the accelerated electrons can be represented by a forced harmonic oscillation and it was confirmed by 2D particle-in-cell simulations. These transverse oscillations of beams lead to micro-bunching as well, which can be used for generation of femtosecond coherent radiations of keV range photon energies.
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DOI
http://dx.doi.org/10.1016/j.cap.2012.10.012
ISSN
1567-1739
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