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RECORD NUMBER: 37 OF 176

OLS Field Name OLS Field Data
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
Holdings
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Status
NTIS  PB84-203256 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 9p
Abstract
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.)