title: A polarization fabry-perot duochromator.
abstract: A two-channel Fabry-Perot interferometer for the measurement of very small displacements of spectral lines has been constructed. Advantage is taken both of the superior throughput and resolution of the Fabry-Perot. The two-channel operation is produced by the use of two concentric polarizers and a rotating analyzer. Application is made to the study of ion drifts in a Schüler hollow cathode plasma.
authors.forename: J G
authors.initials: JG
authors.lastname: Hirschberg
authors.forename: W I
authors.initials: WI
authors.lastname: Fried