title: Optical probe for on-line spectroscopic measurements in the near-critical region.
abstract: An optical probe is presented for concentration determinations by high-pressure spectroscopy in the near-critical region. Based on the constructive design, the radiation path within a pressure vessel is independent of the refractive index of the fluid media.
authors.forename: H
authors.initials: H
authors.lastname: Ertel
authors.forename: H
authors.initials: H
authors.lastname: Tiltscher