title: Continuous wave cavity ring-down spectroscopy for velocity distribution measurements in plasma.
abstract: We report the development of a continuous wave cavity ring-down spectroscopic (CW-CRDS) diagnostic for real-time, in situ measurement of velocity distribution functions of ions and neutral atoms in plasma. This apparatus is less complex than conventional CW-CRDS systems. We provide a detailed description of the CW-CRDS apparatus as well as measurements of argon ions and neutrals in a high-density (10(9) cm(-3) < plasma density <10(13) cm(-3)) plasma. The CW-CRDS measurements are validated through comparison with laser induced fluorescence measurements of the same absorbing states of the ions and neutrals.
authors.affiliation: Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506, USA.
authors.forename: D
authors.initials: D
authors.lastname: McCarren
authors.affiliation: Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506, USA.
authors.forename: E
authors.initials: E
authors.lastname: Scime