Term: medium-pressure mercury lamp
https://doi.org/10.1351/goldbook.M03816

Definition:
Non-coherent radiation source containing mercury vapour at pressures ranging from 50 to several hundred kPa (1 atm = 101.325 kPa). Emits mostly from 200 to 1000 nm with the most intense lines approximately at 218, 248, 254, 266, 280, 289, 297, 303, 313, 334, 366, 406, 408, 436, 546 and 578 nm.

Related Terms:
1) coherent radiation (http://doi.org/10.1351/goldbook.C01130).

Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 369 (https://doi.org/10.1351/pac200779030293)

Citation: 'medium-pressure mercury lamp' 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.M03816

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