Time- and space-resolved temperature of a 10.6-μm laser-irradiated foil

Abstract
Energy flow to a target rear surface due to hot electrons was experimentally studied by irradiating a 10‐μm wavelength laser. Lateral heat conduction produced a plasma of low and uniform temperature, whose size was nearly one order larger than that of a laser focal spot for plane targets. Experimental results were simulated by using a one‐dimensional hydrodynamic simulation code to investigate the effects of hot electron diffusion.