conversion spectrum
A plot of a quantity related to the absorption (absorbance, cross section, etc.) multiplied by the quantum yield for the considered process against a suitable measure of photon energy, such as frequency, Math - text, wavenumber, Math - text, or wavelength, Math - text, e.g. the conversion cross section, Math - text, has the SI unit Math - text.
See also: action spectrum, efficiency spectrum, spectral effectiveness
Source:
PAC, 1996, 68, 2223 (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2234