Detailed dynamics of electron beams self-trapped and accelerated in a self-modulated laser wakefield

S. Y. Chen, M. Krishnan, A. Maksimchuk, R. Wagner, D. Umstadter

Research output: Contribution to journalConference article

52 Scopus citations

Abstract

The electron beam generated in a self-modulated laser-wakefield accelerator is characterized in detail. A transverse normalized emittance of 0.06 π mm mrad, the lowest ever for an electron injector, was measured for 2 MeV electrons. The electron beam was observed to have a multicomponent beam profile and energy distribution. The latter also undergoes discrete transitions as the laser power or plasma density is varied. In addition, dark spots that form regular modes were observed in the electron beam profile. These features are explained by analysis and test particle simulations of electron dynamics during acceleration in a three-dimensional plasma wakefield.

Original languageEnglish (US)
Pages (from-to)4739-4749
Number of pages11
JournalPhysics of Plasmas
Volume6
Issue number12
DOIs
StatePublished - Dec 1999
EventProceedings of the 1999 APS Centennial Meeting - Atlanta, GA, United States
Duration: Mar 20 1999Mar 26 1999

ASJC Scopus subject areas

  • Condensed Matter Physics

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