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Applied Optics

Applied Optics


  • Vol. 4, Iss. 2 — Feb. 1, 1965
  • pp: 221–224

Infrared Reflectance and Emittance of Silver and Gold Evaporated in Ultrahigh Vacuum

Jean M. Bennett and E. J. Ashley  »View Author Affiliations

Applied Optics, Vol. 4, Issue 2, pp. 221-224 (1965)

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The reflectance of silver and gold evaporated in ultrahigh vacuum, has been measured in the wavelength range from 0.5 μ to 32 μ. It was found that the reflectance of both materials is higher than previously-reported values, and that ultrahigh vacuum silver films have the highest infrared reflectance over an extended wavelength range of any known material. The infrared emittance of uhv gold films is nearly as low as that of silver and is smaller by nearly a factor of 3 than the value previously reported for this material. Since gold is chemically inert and its emittance apparently does not change with time, it should find wider application as a low infrared emittance material, particularly in problems involving radiative heat transfer.

© 1965 Optical Society of America

Original Manuscript: October 27, 1964
Published: February 1, 1965

Jean M. Bennett and E. J. Ashley, "Infrared Reflectance and Emittance of Silver and Gold Evaporated in Ultrahigh Vacuum," Appl. Opt. 4, 221-224 (1965)

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  1. H. E. Bennett, M. Silver, E. J. Ashley, J. Opt. Soc. Am. 53, 1089 (1963). [CrossRef]
  2. H. E. Bennett, J. M. Bennett, E. J. Ashley, J. Opt. Soc. Am. 52, 1245 (1962). [CrossRef]
  3. H. E. Bennett, W. F. Koehler, J. Opt. Soc. Am. 50, 1 (1960). [CrossRef]
  4. G. Hass, American Institute of Physics Handbook (McGraw-Hill, New York, N.Y., 1963), 2nd ed., p. 6–119.
  5. L. A. Holland, Vacuum Deposition of Thin Films (Wiley, New York, N.Y., 1958), pp. 99–100.
  6. T. M. Donovan, private communication.
  7. See ref. 5, p. 77.
  8. See ref. 5, p. 74.
  9. See ref. 5, pp. 76, 80.
  10. See ref. 5, pp. 76, 415.
  11. J. Strong, Procedures in Experimental Physics (Prentice-Hall, Englewood Cliffs, N.J., 1938), p. 187.

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