Middle Infrared Spectral Studies of Geologic Materials in Their Natural State Using Photothermal Beam Deflection Spectroscopy,
Abstract
The use of a novel laboratory spectral technique is described for the recording of middle infrared (MIR) absorption spectra of natural surfaces with no sample preparation. Such a technique allows evaluation of spectral influences of surficial films such as weathering products, lichen cover or desert varnish on the spectra of the substrate geologic materials. In remote sensing applications the technique should provide spectral information more nearly representative of field conditions and may improve interpretation of thermal imagery. The technique, called photothermal beam deflection spectroscopy (PBDS) was originally developed for studies of surface chemistry in situations where it is impractical or impossible to separate surface layers from their substrate. In the present studies the spectral characteristics of natural rock and mineral surfaces have been examined.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1984
- Accession Number
- ADA144894
Entities
People
- J. W. Eastes
- M. J. D. Low
Organizations
- Geospatial Research Laboratory