Latent image temperature dependence

While the memory effect of the developed film is almost infinite, this is not the case for the latent image which slowly fades, depending on the number of originally activated silver atoms, the film type and external conditions like temperature, humidity, etc. When stored under ambient conditions, about 80% of the latent image disappears in half a year. 

Fig. 8. a - dependence of diffraction efficiency t of holograms, recorded on samples of different synthesis, on post-exposure warm-up time (tch is characteristic warm-up time) curve 1 - optimal synthesis, curve 2 - soft synthesis, curve 3 - hard synthesis, spatial frequency of hologram 640 mm-i. b - dependences of relative hardness index Kh of samples (curve 1), deviations of synthesis temperature from the given one AT (curve 2), latent image hologram DE (curve 3) on characteristic warm-up time tch of recorded holograms. 

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