Ion acceleration by an ultrashort laser pulse interacting with a near-critical-density gas jet

M. Ehret, C. Salgado-Lopez, V. Ospina-Bohorquez +28

We demonstrate laser-driven Helium ion acceleration with cut-off energies above 25 MeV and peaked ion number above $10^8$ /MeV for 22(2) MeV projectiles from near-critical density…