INFRARED REFLECTANCE AND EMITTANCE OF SILVER AND GOLD EVAPORATED IN ULTRAHIGH VACUUM

Abstract

The reflectance of silver and gold evaporated in ultrahigh vacuum was measured in the wavelength range from 0.5 micron to 32 microns. 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.

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Document Details

Document Type
Technical Report
Publication Date
Oct 27, 1964
Accession Number
AD0616142

Entities

People

  • E. J. Ashley
  • Jean M. Bennett

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Counter WMD
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Artificial Satellites
  • Films
  • Heat Transfer
  • Jet Propulsion
  • Materials
  • Measurement
  • Munitions
  • Optical Properties
  • Optics
  • Ordnance Laboratories
  • Radiation
  • Reflectance
  • Sodium Hydroxide
  • Standards
  • Ultrahigh Vacuum
  • Vacuum
  • Weapons

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Thin Film Deposition Science.