photons / quanta / quanta of radiation

[DieterLa]

I am not 100% sure about the following:

you are using the unit quanta/(cm^2 * s) for photon flux density.
This is the same as photon irradiance
this is basically correct.
But I am not sure if quanta alone is correct. The term "quanta" alone may be clear to a physicist, active in assessment of radiation.

I am wondering if not photons/(cm^2 * s) would be better.
also possible:
number of photons/(cm^2 * s) or quanta of radiation/(cm^2 * s)

The SI unit would be 1/(m^2 * s)
The term "photon" or "quanta" is not a unit and is used only to make clear, what it is.

Earlier the term µEinstein or µmols has been used to express this quantity related to a mol of photons, but this is no longer supported by SI.

[JZauner]

I mainly used quanta because in most publications of non-visual effects of light this was used rather than photons, but I agree that photons are more relatable to other fields. I will change this.

[JZauner]

Made the change. It will go online in Version 1.0.0 of Spectran