Authors have investigated the emission spectrum of an artificial willemite in fluorescence and phosphorescence at various durations of excitation and at various instants after the cessation of excitation. It was found that by ultraviolet excitation with a revolving phosphoroscope the yellow subband had disappeared in phosphorescence. The phosphorescence decay curve after pulsed cathode-ray excitation was measured with spectrographical resolution in various parts of the spectrum with multiplier, amplifier and oscilloscope. A very rapid decay was found in the blue part of the spectrum.
ASJC Scopus subject areas
- Nuclear and High Energy Physics