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ACTION SPECTRUM FOR ERYTHEMA IN HUMANS INVESTIGATED WITH DYE LASERS
Author(s) -
Anders Angelika,
Altheide HansJürgen,
Knälmann Marita,
Tronnier Hagen
Publication year - 1995
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1995.tb03961.x
Subject(s) - action spectrum , monochromatic color , erythema , laser , irradiation , dye laser , wavelength , chemistry , human skin , optics , materials science , optoelectronics , analytical chemistry (journal) , dermatology , photochemistry , chromatography , medicine , physics , biology , nuclear physics , genetics
— Erythema reactions of human skin were reevaluated with improved experimental methods: a tunable, highly monochromatic irradiation source as well as an instrumental measurement of skin reactions were used. The irradiation system consisted of an excimer laser pumped dye laser and a U V fiber optic system. The skin color after irradiation was determined with a colorimeter in the three‐dimensional norm system of the Commission Internationale d'Eclairage (CIE). The wavelength dependence for delayed erythema was investigated in the UVB and UVA region from 294 nm to 374 nm in skin type II and III individuals. The maximum of the action spectrum in the UVB range was measured at 298.5 nm and an additional maximum was found at 362 nm in the UVA range. The action spectrum is compared with previous spectra from the literature and with the current standard erythema curve of the CIE as well as with other photobiological action spectra. Our results suggest a UVA/UVB boundary at 330 nm.

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