Abstract

A calorimeter in the form of a 15° cone has been constructed and evaluated for use as a “black” radiation detector. The internal surface of the cone is coated with colloidal graphite to enhance the absorptance. Spectral emissivity and reflectance measurements of the blackening material are used to estimate the effective absorptance of the conical receiver. To reduce many of the difficulties associated with a dc system, this detector is used with an ac amplifying system at a frequency of 1 cps. The spectral response of three commercial thermocouples is compared with that of the conical receiver.

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  1. See R. A. Smith, F. E. Jones, R. P. Chasmar, The Detection and Measurement of Infra-Red Radiation (Clarendon Press, Oxford, England, 1957), pp. 89–91.
  2. D. L. Stierwalt, "Infrared Spectral Emissivity of Optical Materials," NOLC Rept. 537, U. S. Naval Ordnance Laboratory, Corona, California, January 1961.
  3. L. Harris, R. T. McGinnies, and B. M. Siegel, J. Opt. Soc. Am. 38, 582 (1948).
  4. L. Harris and J. K. Beasley, J. Opt. Soc. Am. 42, 134 (1952).
  5. L. Harris, J. Opt. Soc. Am. 51, 80 (1961).
  6. A. Gouffé, Rev. Optique 24, 1 (1945).
  7. J. C. DeVos, Physica 20, 669 (1954); this paper contains an extensive bibliography.

Beasley, J. K.

L. Harris and J. K. Beasley, J. Opt. Soc. Am. 42, 134 (1952).

Chasmar, R. P.

See R. A. Smith, F. E. Jones, R. P. Chasmar, The Detection and Measurement of Infra-Red Radiation (Clarendon Press, Oxford, England, 1957), pp. 89–91.

DeVos, J. C.

J. C. DeVos, Physica 20, 669 (1954); this paper contains an extensive bibliography.

Gouffé, A.

A. Gouffé, Rev. Optique 24, 1 (1945).

Harris, L.

L. Harris, J. Opt. Soc. Am. 51, 80 (1961).

L. Harris, R. T. McGinnies, and B. M. Siegel, J. Opt. Soc. Am. 38, 582 (1948).

L. Harris and J. K. Beasley, J. Opt. Soc. Am. 42, 134 (1952).

Jones, F. E.

See R. A. Smith, F. E. Jones, R. P. Chasmar, The Detection and Measurement of Infra-Red Radiation (Clarendon Press, Oxford, England, 1957), pp. 89–91.

McGinnies, R. T.

L. Harris, R. T. McGinnies, and B. M. Siegel, J. Opt. Soc. Am. 38, 582 (1948).

Siegel, B. M.

L. Harris, R. T. McGinnies, and B. M. Siegel, J. Opt. Soc. Am. 38, 582 (1948).

Smith, R. A.

See R. A. Smith, F. E. Jones, R. P. Chasmar, The Detection and Measurement of Infra-Red Radiation (Clarendon Press, Oxford, England, 1957), pp. 89–91.

Stierwalt, D. L.

D. L. Stierwalt, "Infrared Spectral Emissivity of Optical Materials," NOLC Rept. 537, U. S. Naval Ordnance Laboratory, Corona, California, January 1961.

Other (7)

See R. A. Smith, F. E. Jones, R. P. Chasmar, The Detection and Measurement of Infra-Red Radiation (Clarendon Press, Oxford, England, 1957), pp. 89–91.

D. L. Stierwalt, "Infrared Spectral Emissivity of Optical Materials," NOLC Rept. 537, U. S. Naval Ordnance Laboratory, Corona, California, January 1961.

L. Harris, R. T. McGinnies, and B. M. Siegel, J. Opt. Soc. Am. 38, 582 (1948).

L. Harris and J. K. Beasley, J. Opt. Soc. Am. 42, 134 (1952).

L. Harris, J. Opt. Soc. Am. 51, 80 (1961).

A. Gouffé, Rev. Optique 24, 1 (1945).

J. C. DeVos, Physica 20, 669 (1954); this paper contains an extensive bibliography.

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