conversion spectrum

https://doi.org/10.1351/goldbook.C01319
A plot of a quantity related to the absorption (@A00028@, cross section, etc.) multiplied by the @Q04991@ for the considered process against a suitable measure of photon energy, such as frequency, $$\nu$$, wavenumber, $$\sigma$$, or @W06659@, $$\lambda$$, e.g. the conversion cross section, $$\sigma \varphi$$, has the SI unit $$\mathrm{m}^{2}$$.
action spectrum
,
efficiency spectrum
,
spectral effectiveness
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2234 [Terms] [Paper]