Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Modulated Lamp System for Solar-UV-B(280-320nm) Supplementation Studies in the Field.
Author Cadwell, M. M. ; Gold, W. G. ; Harris, G. ; Ashurst, C. W. ;
CORP Author Utah State Univ., Logan.;Corvallis Environmental Research Lab., OR.
Year Published 1983
Report Number EPA-C-808167; EPA-600/J-83-209;
Stock Number PB84-203280
Additional Subjects Ozone ; Fluorescent lamps ; Ultraviolet radiation ; Air pollution ; Solar ultraviolet radiation ; Assessments ; Laboratory equipment ; Near ultraviolet radiation ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB84-203280 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
Precise control and modulation of fluorescent sunlamps are necessary for ecologically valid simulation of solar UV-B (280-320 nm) radiation enhancement which would correspond to ozone reduction. A control system is described which allows lamp emittance to be modulated over a large dynamic range (50:1), permits stable lamp operation and starting at low temperatures, and provides a sensitive feedback loop to compensate for both atmospheric conditions, such as cloud cover, as well as changes in radiant emittance from the lamps resulting from factors such as temperature and lamp age. (Copyright (c) 1983 Pergamon Press Ltd.)