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Liu, B.; Meyer-ter-Vehn, J.; Bamberg, K-U.; Ma, W. J.; Liu, J.; He, X. T.; Yan, X. Q.; Ruhl, H. (2016): Ion wave breaking acceleration. In: Physical Review Accelerators and Beams, Vol. 19, No. 7, 073401


Laser driven ion wave breaking acceleration (IWBA) in plasma wakefields is investigated by means of a one-dimensional (1D) model and 1D/3D particle-in-cell (PIC) simulations. IWBA operates in relativistic transparent plasma for laser intensities in the range of 10(20)-10(23) W= cm(2). The threshold for IWBA is identified in the plane of plasma density and laser amplitude. In the region just beyond the threshold, self-injection takes place only for a fraction of ions and in a limited time period. This leads to well collimated ion pulses with peaked energy spectra, in particular for 3D geometry.