Abstract
Lateral energy transport in laser-produced plasmas has been studied by irradiating planar polystyrene foils with 0.53-\ensuremath{\mu}m-wavelength, spatially nonuniform laser beams. Spatially resolved x-ray emission patterns and spectra were recorded to infer the temperatures, ionization states, and time-integrated hydrodynamic histories of plasma originating from tracer layers embedded in the targets. The conditions of the experiment have been simulated using a two-dimensional single fluid hydrodynamic code. The experimental results and code predictions are in good agreement, indicating that a moderate amount of ablation occurs in the nonirradiated region of the target. (c) 1995 The American Physical Society
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