Record Display for the EPA National Library Catalog


Main Title Dye Laser Source of Monochromatic UV-B and UV-C Radiations for Biological Action Spectroscopy.
Author Calkins, J. ; Colley, E. ; Hazle, J. ; Hannan, M. A. ;
CORP Author Kentucky Univ., Lexington.;Corvallis Environmental Research Lab., OR.
Year Published 1983
Report Number EPA-R-810294; EPA-600/J-83-215;
Stock Number PB84-203256
Additional Subjects Ultraviolet spectroscopy ; Microorganisms ; Solar radiation ; Photochemistry ; Sunlight ; Reprints ; Laser spectroscopy
Library Call Number Additional Info Location Last
NTIS  PB84-203256 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
The authors have used a flashlamp driven tunable dye laser as a radiation source for observing UV-C and UV-B action spectra of two eukaryotic microorganisms. The general nature of the irradiation system and various operating parameters are described. The laser produces the high power output required for UV-B action spectroscopy; it is tunable throughout the UV-B range with the very narrow bandwidth required for high resolution action spectra. The peak power density does not appear to reach the threshold of 'two photon' biological effects, a concern when using pulsed lasers for action spectroscopy. The laser is somewhat more expensive and considerably more difficult to operate compared with arc-monochrometer systems; it is generally equal or greater in UV-B power and has distinct advantages in tunability and bandwidth of the spectral output. (Copyright (c) 1983 Pergamon Press Ltd.)