# DEVELOPMENT OF A NEAR INFRARED-VISIBLE SPECTROPHOTOMETER AT UTMSL

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/15888

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 Title: DEVELOPMENT OF A NEAR INFRARED-VISIBLE SPECTROPHOTOMETER AT UTMSL Creators: Lovell, R. J.; Blass, W. E.; Moore, Dana H.; McElyea, Gerald W.; Gailar, Norman M.; Moore, Thomas F.; Jacobson, Harry C.; Jennings, D. E.; Boyd, William J. Issue Date: 1973 Publisher: Ohio State University Abstract: A high resolution spectrometer has been designed to operate in the wavelength region spanning the near infrared through the visible. The monochromator configuration is a 1 1/4 meter Ebert-Fastie. The grating is a Bausch and Lomb $5 \times 10$ inch, 316 groove per millimeter echelle driven by a programmable stepping drive. A Perkin Elmer Model 112 spectrometer equipped with a $CaF_{2}$ prism has been modified to act as a predisperser. The sample section follows the monochromator so that only the highly dispersed light excites the sample gas. An interesting feature of the sampling section is the method of double beaming. A beam flipping mirror shifts the sample beam through two paths to a single detector. The signal from the detector [lead sulphide or photomultiplier] is amplified and digitized by an $A/D$ converter and then routed by a PDP-11 computer system to a storage buffer. Design features and performance will be discussed. Description: Author Institution: Molecular Spectroscopy Laboratory, Department of Physics and Astronomy University of Tennessee, Knoxville URI: http://hdl.handle.net/1811/15888 Other Identifiers: 1973-AA-08