title: Fluorescence measurements of expanding strongly coupled neutral plasmas.
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.
authors.affiliation: Brigham Young University, Department of Physics and Astronomy, Provo, Utah 84602, USA.
authors.forename: E A
authors.initials: EA
authors.lastname: Cummings
authors.forename: J E
authors.initials: JE
authors.lastname: Daily
authors.forename: D S
authors.initials: DS
authors.lastname: Durfee
authors.forename: S D
authors.initials: SD
authors.lastname: Bergeson