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Fourier emission infrared microspectrophotometer for surface analysis. I - Application to lubrication problemsA far-infrared interferometer was converted into an emission microspectrophotometer for surface analysis. To cover the mid-infrared as well as the far-infrared the Mylar beamsplitter was made replaceable by a germanium-coated salt plate, and the Moire fringe counting system used to locate the moveable Michelson mirror was improved to read 0.5 micron of mirror displacement. Digital electronics and a dedicated minicomputer were installed for data collection and processing. The most critical element for the recording of weak emission spectra from small areas was, however, a reflecting microscope objective and phase-locked signal detection with simultaneous referencing to a blackbody source. An application of the technique to lubrication problems is shown.
Document ID
19790068652
Document Type
Reprint (Version printed in journal)
Authors
Lauer, J. L. (Rensselaer Polytechnic Inst. Troy, NY, United States)
King, V. W. (Rensselaer Polytechnic Institute, Troy, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
August 1, 1979
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-78-3473
CONTRACT_GRANT: NSG-3170
Distribution Limits
Public
Copyright
Other