IUPAC > Gold Book > alphabetical index > S > spectral photon radiance, L p λ


spectral photon radiance, L p λ

The photon radiance, L p, at wavelength per unit wavelength interval. The SI unit is s −1 m −3 sr −1, but a commonly used unit is s −1 m −2 sr −1 nm −1. Alternatively, the term can be used with the amount of photons (mol or its equivalent einstein) the SI unit then being mol s −1 m −3 sr −1 and the common unit mol s −1 m −2 sr −1 nm −1.
PAC, 1996, 68, 2223 (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2276
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.S05822.
Original PDF version: http://www.iupac.org/goldbook/S05822.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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