Rise and Decay of Intensity of Luminescence of Short-Persistence Phosphors

Abstract

RECTANGULAR-WAVE cathodo-excitation of short-persistence phosphors is known¹ to produce curves of intensity of luminescence of the shape indicated in Fig. 1, the sections of rise and decay each being represented by the sum of two characteristic exponential functions. These may be expressed, with the notation of Fig. 1, for the rise by: and for the decay, provided that the steady-state condition L _e has virtually been attained at t < t _p, by : where k _r1 + k _r2 = k _d1 + k _d2 = 1, and τ_r2 ≪ τ_r1, τ_d2 ≪ τ_d1.