Preferred Label : photon counting;
IUPAC definition : Recording of sequential single photons counted by way of recording and counting sequential
electron pulses at the anode of the photomultiplier.;
Scope note : 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.; 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.;
Origin ID : P04629;
See also
Recording of sequential single photons counted by way of recording and counting sequential
electron pulses at the anode of the photomultiplier.
