Répartition spectrale de l'effet électro-renforçateur des mélanges de CdS-ZnS activés au manganèse et à l'argent

Abstract
The magnitude of the " electroenchancement effect " (the increase in the X-ray excited fluorescence of certain phosphors when an electric field is applied) is quite different according to the spectral region observed. The maximum · enhancement for the samples used (70 %, ZnS, 30 % CdS) is obtained at about 6 000 Å ; here the brightness is increased by a factor which may be as high as four when the field is applied. For shorter wavelengths (below about 5 000 Å), however, the enhancement effect disappears and, in some cases, is even replaced by a quenching effect.