Radiation conversion and related ablation behavior of a gold-foil target irradiated by 0.35, 0.53, 1.06, and 10.6 μm lasers

Abstract

Ultra-soft x-ray emission from a gold-foil target was studied by irradiating with four different wavelength lasers. The experimental data were analyzed under the blackbody approximation to evaluate the radiation temperature and the radiation conversion efficiency as functions of laser intensity and wavelength. The results show that the shorter-wavelength laser leads to a remarkable conversion of absorbed energy into radiation. The ablation behavior due to radiation and related energy transport in a gold foil is also studied.