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For the provision of rapid and convenient means for the examination of luminescent solids by oscillographic methods, the possibility of producing square-wave light pulses from a gaseous discharge has been investigated. Decay curves sufficiently accurate for the estimation of half-life periods and for the study of gross effects could be obtained by interrupting the D.C. supply to the discharge by means of a small vibrator.
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Lord et al. (1946) studied this question.
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