04574 IUPAC Gold Book - photoacoustic detector 10.1351/goldbook.P04574 P04574 current 1 A pressure-sensitive detector used to detect intermittent radiation absorbed in a black body or in the sample concerned. The resulting rapid temperature change produces a transient pressure oscillation that is observed with the help of a microphone, or a piezoelectric device. pressure-sensitive detector https://goldbook.iupac.org//terms/view/P04824 radiation detector https://goldbook.iupac.org//terms/view/R05054 PAC, 1995, 67, 1745. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection of radiation (IUPAC Recommendations 1995)' on page 1752 (https://doi.org/10.1351/pac199567101745) https://goldbook.iupac.org/terms/view/P04574/html https://goldbook.iupac.org/terms/view/P04574/json https://goldbook.iupac.org/terms/view/P04574/plain Citation: 'photoacoustic detector' 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.P04574 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-07-25T08:48:44+00:00