MEASUREMENT OF THE TEMPERATURE OF THE THERMALLY IRRADIATED SURFACE OF ALPHA CELLULOSE

Abstract

The transient temperature histories of exposed surfaces of specimens of alpha cellulose, irradiated by a carbon arc image furnace, are radiatively measured with a liquid nitrogen cooled, lead sulfide detector, behind a 3.4 micron, narrow band-pass interference filter. The output of the detector is displayed on an oscilloscope and is photographed by a Polaroid Land Camera. The overall time response of this system is 30 milliseconds. Reflected arc radiation off the surface of the sample at 3.4 microns is eliminated by inserting a Plexiglas filter between the arc and the specimen. A mirror is used to focus the detector onto an area of 0.21 square cm on the surface of the specimen. The detector is calibrated by substituting a standard black-body at the position normally occupied by the specimen during the measurement period.

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Document Details

Document Type
Technical Report
Publication Date
Mar 24, 1964
Accession Number
AD0600768

Entities

People

  • N. J. Alvares

Organizations

  • Naval Radiological Defense Laboratory

Tags

Communities of Interest

  • C4I
  • Counter WMD
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Coefficients
  • Detectors
  • Diagrams
  • Emissivity
  • Errors
  • Intensity
  • Materials
  • Measurement
  • Optical Properties
  • Radiation Effects
  • Schematic Diagrams
  • Surface Temperature
  • Temperature Gradients
  • Thermal Conductivity
  • Thermal Radiation

Fields of Study

  • Physics

Readers

  • Geodesy
  • Image Processing and Computer Vision.
  • Thermal Physics or Thermal Science.