| 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 ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB84-203280 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
9p |
| Abstract |
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.) |
