Abstract
A new technique for producing dense (10{sup 20} cm{sup {minus}3}), low-temperature (2--6 eV), optically thin, and well characterized laser-produced plasmas is used to measure, for the first time, the inverse bremsstrahlung absorption and the Coulomb logarithm at 0.5 {mu}m in a strongly coupled plasma. Extrapolations of the standard high-frequency calculations of inverse bremsstrahlung absorption underestimate the absorption in this regime by a factor of 2 or more, whereas calculations based on strongly coupled plasma theory and static classical theory agree with the measurements.
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