Simulated image sequence for a proposed two-step method of accelerating ions in an initial plasma density (top left) by crossing two intense laser pulses to achieve radial ion acceleration (top right) followed by linear ion acceleration to the right (bottom left, right) with energies up to few GeV.

From the article:

Accelerating Ions by Crossing Two Ultraintense Lasers in a Near-Critical Relativistically Transparent Plasma
Bin Liu, Mingyuan Shi, Matt Zepf, Bifeng Lei, and Daniel Seipt
Phys. Rev. Lett. 129, 274801 (2022)

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