quantum efficiency

https://doi.org/10.1351/goldbook.Q04988
For a @P04839@, quantum efficiency is identical to @Q04991@.
See:
efficiency (of a step)
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2267 [Terms] [Paper]