Abstract

The spectral distribution for the excitation of phosphors is so erratic that it seems at present impossible to predict the location of strong excitation bands. Out of many phosphors examined in rare gas discharges, none was found to exceed in brightness the calcium tungstate and zinc silicate already in commercial use. The light output of the latter, however, was considerably improved by the elimination of the free silica usually present, which evidently has an appreciable absorption to radiation in the Schumann region. On the reasonable assumption that the resonance radiation is the source of excitation, the efficiency of fluorescence emitted by the zinc orthosilicate phosphor in the neon discharge denotes a quantum conversion near unity, just as in the low pressure mercury discharge.

© 1942 Optical Society of America

The Fluorescence of Phosphors in Rare Gases

N. C. Beese
J. Opt. Soc. Am. 36(9) 493-498 (1946)

Causes of Early Loss of Light Output of Fluorescent Lamps

George Meister and Rudolph Nagy
J. Opt. Soc. Am. 36(12) 696-701 (1946)

The Fluorescence of Manganese in Glasses and Crystals

S. H. Linwood and W. A. Weyl
J. Opt. Soc. Am. 32(8) 443-453 (1942)

Fluorescence of Silicate Phosphors*

Keith H. Butler
J. Opt. Soc. Am. 37(7) 566-571 (1947)

The Fatigue Effect in Luminescent Materials

N. C. Beese and J. W. Marden
J. Opt. Soc. Am. 32(6) 317-318 (1942)