Fig. 2: Plasma accelerator performance and scalability.
From: Laser-driven high-energy proton beams from cascaded acceleration regimes
a, Maximum proton energy from TPS measurements in 15° and 45° directions (TPS15 and TPS45) sorted by transmitted laser light for a total laser pulse energy of EL = 22.4 J. b, Maximum proton energies for different laser pulse energies EL. The upper axis indicates the calculated laser peak intensity. The dotted lines represent proton energy scalings for better trend visualization. The error bars in both panels indicate the systematic uncertainty in maximum energy detection and transmitted light detection, as defined by the detector setup (details in Methods). Max., maximum.
