Recording of sequential single photons counted by way of recording and counting sequential electron pulses at the anode of the photomultiplier.
- Each electron pulse consists of 105–106 electrons resulting from the multiplication, in the 'dynode' arrangement (or the microchannel plate) of a photomultiplier, of a single photoelectron emitted by a photosensitive layer (the photocathode of the photomultiplier) upon arrival of a single photon.
- Technique used for two purposes: (i) sensitive measurement of low levels of radiation such as those originating from a luminophore and (ii) recording of emission decays.
PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 393 (https://doi.org/10.1351/pac200779030293)