Laser wakefield acceleration using wire produced double density ramps

M. Burza, A. Gonoskov, K. Svensson, F. Wojda, A. Persson, M. Hansson, G. Genoud, M. Marklund, C. G. Wahlström, O. Lundh

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)


A novel approach to implement and control electron injection into the accelerating phase of a laser wakefield accelerator is presented. It utilizes a wire, which is introduced into the flow of a supersonic gas jet creating shock waves and three regions of differing plasma electron density. If tailored appropriately, the laser plasma interaction takes place in three stages: Laser self-compression, electron injection, and acceleration in the second plasma wave period. Compared to self-injection by wave breaking of a nonlinear plasma wave in a constant density plasma, this scheme increases beam charge by up to 1 order of magnitude in the quasimonoenergetic regime. Electron acceleration in the second plasma wave period reduces electron beam divergence by ≈25%, and the localized injection at the density downramps results in spectra with less than a few percent relative spread.

Original languageEnglish
Article number011301
Number of pages5
JournalPhysical Review Special Topics: Accelerators and Beams
Issue number1
Publication statusPublished - 8 Jan 2013
MoE publication typeA1 Journal article-refereed


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