Fluorescence measurements of expanding strongly coupled neutral plasmas |
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Authors: | Cummings E A Daily J E Durfee D S Bergeson S D |
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Affiliation: | Brigham Young University, Department of Physics and Astronomy, Provo, Utah 84602, USA. |
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Abstract: | We report new detailed density profile measurements in expanding strongly coupled neutral calcium plasmas. Using laser-induced fluorescence techniques, we determine plasma densities in the range of 10(5) to 10(9) cm(-3) to with a time resolution limit as small as 7 ns. Strong coupling in the plasma ions is inferred directly from the fluorescence signals. Evidence for strong coupling at late times is presented, confirming a recent theoretical result. |
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