The Xuv Radiation Transfer Through High-Z Metal Foil in a Laser-Produced Plasma

摘要

An Al and an Au foil were irradiated by a 1.05 micrometers, 100 psec laser pulse at the intensity of 3 x 10 to the 14th power W/sq cm. A spatially resolved spectrum of XUV radiation from a rear side plasma was observed in the wavelength range from 10 to 100 anysteroms. The spectral intensity for the Al foil decayed exponentially with the foil thickness and diminishes at 3 micrometers. That for the Au foil also decayed exponentially up to 1 micrometer but remained almost constant from 1 to 6 micrometers. This result for the Au foil indicates that radiation heat conduction plays an important role in the energy transport through high Z plasmas.