Title: photoelectric peak
Long Title: IUPAC Gold Book - photoelectric peak
DOI: 10.1351/goldbook.P04604
Status: current

Definition
Of a spectrum of γ-radiation, the part of the spectral response curve corresponding to the absorption in the radiation detector by the photoelectrical effect of the detected $\upgamma\!\mbox{-}\rm{energy}$. In most cases the peak also contains events caused by multiple processes and use of the expression full energy peak or full energy peak is to be preferred. Synonymous with photopeak.

Related Terms
- absorption: https://goldbook.iupac.org//terms/view/A00036
- full energy peak: https://goldbook.iupac.org//terms/view/F02546
- photoelectrical effect: https://goldbook.iupac.org//terms/view/P04601
- radiation detector: https://goldbook.iupac.org//terms/view/R05054
- γ-radiation: https://goldbook.iupac.org//terms/view/R02568

Source
- PAC, 1982, 54, 1533. 'Glossary of terms used in nuclear analytical chemistry (Provisional)' on page 1548 (https://doi.org/10.1351/pac198254081533)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/P04604/html
- json: https://goldbook.iupac.org/terms/view/P04604/json
- xml: https://goldbook.iupac.org/terms/view/P04604/xml

Citation: Citation: 'photoelectric peak' 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.P04604
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Accessed: 2026-04-18T19:27:23+00:00