Time-Resolved Spectrum of Light Reflected from Laser-Produced Plasmas

The time-dependent spectrum of 1.053-μm light reflected from spherical targets has been measured for intensities between 0.4×${10}^{15}$ and 10×${10}^{15}$ W/${\mathrm{cm}}^2$. The spectra are primarily shifted to the blue and are consistent with a Doppler-shift model. When compared with hydrodynamic code simulations, they place restraints on models for heat transport and suprathermal electron transport.