Title: spectral sensitivity
Long Title: IUPAC Gold Book - spectral sensitivity
DOI: 10.1351/goldbook.ST07395
Status: current
Index: quantity

Definition
Referred to actinometer based on spectrophotometric measurements, \(S_{\rm{ac}}(\lambda) = \varPhi (\lambda)\ \varepsilon(\lambda _{\rm{obs}}) = \rm{sensitivity\ or\ actinometric\ factor}\). \(\varPhi(\lambda)\) is the quantum yield of the actinometer at the excitation wavelength and \(\lambda_{\rm{obs}}\) is the observation wavelength, which may be the same as or differ from the former.

Related Terms
- actinometer: https://dev.goldbook.iupac.org/terms/view/A00087
- quantum yield: https://dev.goldbook.iupac.org/terms/view/Q04991
- wavelength: https://dev.goldbook.iupac.org/terms/view/W06659

Source
- PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 426 (https://doi.org/10.1351/pac200779030293)

Other Outputs
- html: https://dev.goldbook.iupac.org/terms/view/ST07395/html
- json: https://dev.goldbook.iupac.org/terms/view/ST07395/json
- xml: https://dev.goldbook.iupac.org/terms/view/ST07395/xml

Citation: Citation: 'spectral sensitivity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.ST07395
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Accessed: 2026-06-13T03:07:04+00:00