Laser wakefield acceleration using wire produced double density ramps
2013 (English)In: Physical Review Special Topics. Accelerators and Beams, ISSN 1098-4402, Vol. 16, no 1, 011301- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2013. Vol. 16, no 1, 011301- p.
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:umu:diva-67309DOI: 10.1103/PhysRevSTAB.16.011301ISI: 000313337800001OAI: oai:DiVA.org:umu-67309DiVA: diva2:611883