Dynamics of Relativistic Laser-Plasma Interaction on Solid Targets

作者：Ping Y^*; Kemp A J; Divol L; Key M H; Patel P K; Akli K U; Beg F N; Chawla S; Chen C D; Freeman R R; Hey D; Higginson D P; Jarrott L C; Kemp G E; Link A; McLean H S; Sawada H; Stephens R B; Turnbull D; Westover B; Wilks S C

来源：Physical Review Letters, 2012, 109(14): 145006.

DOI：10.1103/PhysRevLett.109.145006

A novel time-resolved diagnostic is used to record the critical surface motion during picosecond-scale relativistic laser interaction with a solid target. Single-shot measurements of the specular light show a redshift decreasing with time during the interaction, corresponding to a slowing-down of the hole boring process into overdense plasma. On-shot full characterization of the laser pulse enables simulations of the experiment without any free parameters. Two-dimensional particle-in-cell simulations yield redshifts that agree with the data, and support a simple explanation of the slowing-down of the critical surface based on momentum conservation between ions and reflected laser light.

• 出版日期2012-10-5