MEASUREMENT OF THE SOLAR UV-RADIATION AT THE EARTH SURFACE USING A DETECTOR TUNABLE IN THE 230 TO 430 NM RANGE

The solar ultraviolet radiation at the earth surface is measured by us ing a detector based on Eu2+-doped NaCl. The device response, which ex tends from 230 to 430 nm, matches the active excitation regions of ult raviolet light in many environmental and biological phenomena. An appl ication is presented, where the ultraviolet solar intensity at differe nt latitudes is measured at wavelengths with a sizable (lambda = 312 n m) or without (lambda = 365 nm) ozone absorption.