Quasimonoenergetic electron beam generation by using a pinholelike collimator in a self-modulated laser wakefield acceleration
Cited 18 times inCited 19 times in
- Quasimonoenergetic electron beam generation by using a pinholelike collimator in a self-modulated laser wakefield acceleration
- Hafz, N; Hur, Min Sup; Kim, GH; Kim, C; Ko, IS; Suk, H
- Issue Date
- AMER PHYSICAL SOC
- PHYSICAL REVIEW E, v.73, no.1, pp.1 - 7
- 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.
- Appears in Collections:
- PHY_Journal Papers
- Files in This Item:
- There are no files associated with this item.
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.