photon flow, Φp

https://doi.org/10.1351/goldbook.P04633
The number of photons (quanta, N) per unit time. (dNdt, simplified expression: Φp=Nt when the number of photons is constant over the time considered). The SI unit is s1. Alternatively, the term can be used with the amount of photons (mol or its equivalent
einstein
), the SI unit then being mols1.
See:
spectral photon flow
See also:
radiant power
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2263 [Terms] [Paper]