spectral photon exitance, \(M_{\textrm{p}\lambda}\)

The @P04631@, \(M_{\text{p}}\), at @W06659@ per unit @W06659@ interval. The SI unit is \(\mathrm{s}^{- 1}\ \mathrm{m}^{- 3}\), but a commonly used unit is \(\mathrm{s}^{- 1}\ \mathrm{m}^{- 2}\ \mathrm{nm}^{- 1}\). Alternatively, the term can be used with the amount of photons (mol or its equivalent @E01914@) the SI unit then being \(\mathrm{mol}\ \mathrm{s}^{- 1}\ \mathrm{m}^{- 3}\) and the common unit \(\mathrm{mol}\ \mathrm{s}^{- 1}\ \mathrm{m}^{- 2}\ \mathrm{nm}^{- 1}\).
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2275 [Terms] [Paper]