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Cryogenic blackbody calibrations at the NIST and Low Background Infrared Calibration Facility.

Author(s) : DATLA R. U., CROARKIN M. C., PARR A. C.

Type of article: Article

Summary

An absolute cryogenic radiometer is used as the standard detector to measure the total radiant power at its aperture. The low background is provided by a closed cycle helium refrigeration system that maintains the inner parts of the calibration chamber at 20 K. The radiance temperature of the black body is deduced from the measured power and compared with the blackbody temperature sensor data. The calibration procedures and data analysis are illustrated using the measurements of a typical black body.

Details

  • Original title: Cryogenic blackbody calibrations at the NIST and Low Background Infrared Calibration Facility.
  • Record ID : 1995-1425
  • Languages: English
  • Source: J. Res. NIST - vol. 99 - n. 1
  • Publication date: 1994/01
  • Document available for consultation in the library of the IIR headquarters only.

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