The DMS-90 is a UV and Visible spectrophotometer. It therefore needs a light source with high intensity in both the UV range (190-350 nm) and the visible range (350-900 nMm). The DMS-90 has a deuterium lamp for the UV range and a high-intensity tunsgtun lamp for the visible range. Light emitted from either of the lamps is passed through a filter to remove high-order frequencies. This filter wheel is automatically controlled by the wavelength drive system.
Michael R. Ross
Chemistry Department, College of St. Benedict/St. John's University
St. Joseph, MN 56374
320-363-5482
Comments to author: mross@csbsju.edu
Revised: 1/1/98
URL: http://www.users.csbsju.edu/~mross/ch336/dms90Lamps.html
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