Evaluation of Transient Luminescent Phenomena by Frequency Characteristics

概要

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The concept of a frequency characteristic is introduced to evaluate the persistence of the luminescent materials. The frequency characteristic is defined as a Fourier transform of a corresponding emission intensity of a phosphor under an impulsive excitation. The frequency characteristics of a monomolecular process, a bimolecular process, and an exponentially build up and decay process are calculated theoretically. The frequency characteristics of several red-emitting phosphors for color television are measured under cathode-ray excitation. The amplitude transfer function of a calcium tungstate obtained experimentally is compared with a calculated curve, and good agreement is obtained. The frequency characteristics from a television system to a visual system are discussed for evaluating the temporal image reproduction property of the phosphor.
社団法人応用物理学会の論文
1968-12-05