Interferometry on the Weapons Laboratory´s compact toroid experiment

Summary form only given, as follows. Interferometric measurements of line-averaged free electron density are being taken as part of the compact toroid experiment at the US Air Force Weapons Laboratory´s High Energy Plasma Division. A double-pass optical interferometer using either a CO₂ far-infrared laser or a He-Ne laser and a separate single-pass millimeter-wave interferometer were employed. With this wide range of wavelengths, a very wide range of density measurements were made at the various stages of the experiment