Term: spectral responsivity
https://doi.org/10.1351/goldbook.S05829

Definition:
The spectral output quantity of a system such as a photomultiplier, diode array, photoimaging device, or biological unit divided by the spectral irradiance s λ = d y λ d E λ, simplified expression: s λ = Y λ E λ, where Y λ is the magnitude of the output signal for irradiation at wavelength λ and E λ is the spectral irradiance of the parallel and perpendicular incident beam at the same wavelength.

Related Terms:
1) responsivity (<em>in detection of radiation</em>) (http://doi.org/10.1351/goldbook.R05347).
2) photoimaging (<em>in detection of radiation</em>) (http://doi.org/10.1351/goldbook.I02944).
3) spectral irradiance (<em>in detection of radiation</em>) (http://doi.org/10.1351/goldbook.S05817).
4) irradiation (<em>in detection of radiation</em>) (http://doi.org/10.1351/goldbook.I03255).
5) wavelength (<em>in detection of radiation</em>) (http://doi.org/10.1351/goldbook.W06659).

Source: PAC, 1995, 67, 1745. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection of radiation (IUPAC Recommendations 1995)' on page 1749 (https://doi.org/10.1351/pac199567101745)

Citation: 'spectral responsivity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S05829

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