Cryogenic Emittance Spectrometer
Final technical rept. May 1973-Apr 1975
BLOCK ENGINEERING INC CAMBRIDGE MA
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The design and fabrication of a high sensitivity cryogenic emittance Fourier interferometer system for measuring the infrared emission of low absorptance samples is described. The spectrometer, cooled to LN2 temperature has a maximum spectral resolution of 0.5 per cm in the 2.5 - 14 micrometer range and a noise equivalent emissivity limit of better than 0.000005 at 10 micrometer. In addition to the spectrometer the system includes a data processing system for the reduction and storage of the spectral data. The emissometer system has been tested and meets all specifications. Data obtained during the acceptance test phase of the program is presented in this report.