Non-linearities and data analysis: towards a quantitative investigation of delayed luminescence.

Innovative techniques for the acquisition and analysis of delayed luminescence (DL) signals are proposed and discussed. At a preliminary level, the signals prove to be a useful tool, not only for quantitative analysis, but also for discrimination--on theoretical grounds--among different, possibly competing, mechanisms responsible for DL in photosynthetic organisms. Moreover, DL recordings from non-photosynthetic organisms (S. cerevisiae yeast) with avalanche photodiode (APD) detection will be discussed.