Terahertz-driven wakefield electron acceleration

A. Sharma, Z. Tibai, J. Hebling, J. Fülöp

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A relativistic electron source is proposed, driven by the wakefield of an intense terahertz (THz) pulse in low-density gas plasma. In contrast to the optical and near-infrared regimes, the low (3.5 THz) frequency and the long (λ T = 85.6 μm) wavelength of the THz pulse offers distinct advantages, such as the -scaling of the electron ponderomotive energy. Two-dimension-in-space and three-dimension-in-velocity particle-in-cell simulation results show that relativistic electrons of ∼1 MeV energy and high charge can be generated by an intense THz pulse at kilohertz repetition rate from a gas plasma target. These results may lead to a new regime of applications, such as ultrafast electron diffraction or high-repetition-rate gamma ray sources for materials characterization or medical radiography, which would benefit from lower energy (1-10 MeV) but higher repetition rate (∼1 kHz) sources of relativistic electrons.

Original languageEnglish
Article number204001
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume51
Issue number20
DOIs
Publication statusPublished - Sep 25 2018

Keywords

  • laser plasma acceleration
  • pic simulation
  • THz field

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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