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Hur, Min Sup
Computational Plasma Lab
Research Interests
  • Laser-Plasma Electron Accelerator and Table-top Femto Hard X-ray generation
  • Plasma-based THz generation
  • PIC and fluid code development
  • Reduced Laser-Plasma modelling
  • Capillary Discharge Systems for Guidied Laser Wakefield Accelerators

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Quasimonoenergetic electron beam generation by using a pinholelike collimator in a self-modulated laser wakefield acceleration

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Title
Quasimonoenergetic electron beam generation by using a pinholelike collimator in a self-modulated laser wakefield acceleration
Author
Hafz, NHur, Min SupKim, GHKim, CKo, ISSuk, H
Issue Date
2006-01
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW E, v.73, no.1, pp.1 - 7
Abstract
A relativistic electron bunch with a large charge (>2 nC) was produced from a self-modulated laser wakefield acceleration configuration. For this experiment, an intense laser beam with a peak power of 2 TW and a duration of 700 fs was focused in a supersonic He gas jet, and relativistic high-energy electrons were observed from the strong laser-plasma interaction. By passing the electron bunch through a small pinholelike collimator, we could generate a quasimonoenergetic high-energy electron beam, in which electrons within a cone angle of 0.25 mrad (f/70) were selected. The beam clearly showed a narrow-energy-spread behavior with a central energy of 4.3 MeV and a charge of 200 pC. The acceleration gradient was estimated to be about 30 GeV/m. Particle-in-cell simulations were performed for comparison study and the result shows that both the experimental and simulation results are in good agreement and the electron trapping is initiated by the slow beat wave of the Raman backward wave and the incident laser pulse.
URI
https://scholarworks.unist.ac.kr/handle/201301/8774
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=32844471902
DOI
10.1103/PhysRevE.73.016405
ISSN
2470-0045
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PHY_Journal Papers
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