Absolute measurements in the VUV spectral range with a luminescent detector

A description is given of a simple luminescent detector of radiation in the VUV range (10 — 100 nm) and of a method for absolute calibration of the sensitivity (quantum efficiency) of this detector. The detector and multilayer normal-incidence mirrors were used in determination of the absolute yield of the radiation from a laser plasma and in absolute calibration of the UF-4 photographic film at the wavelength of 18 nm.