Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp

Localization of ionization-induced trapping in a laser wakefield accelerator using a density down-ramp https://www.laserlab-europe.eu/research/joint-research-2012-2015/jra2-charpac/charpac-publications/2016/localization-of-ionization-induced-trapping-in-a-laser-wakefield-accelerator-using-a-density-down-ramp