Author/Authors :
Prasad، نويسنده , , R. and Ter-Avetisyan، نويسنده , , S. and Doria، نويسنده , , D. and Quinn، نويسنده , , K.E. and Romagnani، نويسنده , , L. and Foster، نويسنده , , P.S. and Brenner، نويسنده , , C.M. and Green، نويسنده , , J.S. and Gallegos، نويسنده , , P. and Streeter، نويسنده , , M.J.V. and Carroll، نويسنده , , D.C. and Tresca، نويسنده , , O. and Dover، نويسنده , , N.P. and Palmer، نويسنده , , C.A.J. and Schreiber، نويسنده , , J.، نويسنده ,
Abstract :
We report on experimental investigations of proton acceleration from thin foil targets irradiated with ultra-short (∼50 fs), high contrast (∼1010) and ultra-intense (up to 1021 W/cm2) laser pulses. These measurements provided for the first time the opportunity to extend the scaling laws for the acceleration process in the ultra-short regime beyond the 1020 W/cm2 threshold. The scaling of accelerated proton energies was investigated by varying the thickness of Al targets (down to 50 nm) under 35° angle of laser incidence and with p-polarised light.
