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Sample rotation in diffuse reflectance Fourier transform infrared spectroscopy

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3 Author(s)
Velapoldi, Rance A. ; Geology Division, Norsk Hydro Research Center, Box 4313, N‐5001 Bergen, Norway ; Tvedt, Jan E. ; Christy, Alfred A.

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An apparatus for the rotation of sample and blank in diffuse reflectance Fourier transform infrared spectroscopy has been designed and fabricated. Spectra taken with sample rotation give data with better precision by a factor of 4 than without rotation. Additionally, sample rotation saves time by eliminating the need for taking three to five spectra followed by spectrum averaging as has been done in the past to obtain a representative spectrum of solids.

Published in:

Review of Scientific Instruments  (Volume:58 ,  Issue: 6 )