EKHI
The open database of optical and radiative data
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Publications: 167 Total entries: 1251
The Reflection Factors of Tungsten at Incandescent Temperatures
W. Weniger, A. H. Pfund
A direct method has been developed for measuring the reflection factors of substances at incandescent temperatures. Curves are given showing the variation in the reflection factor of tungsten for wave-lengths from 0.67μ to 4.0μ and for temperatures up to 2067°K. …
2 entries
Attenuation length measurements of hot electrons in metal films
C. R. Crowell, W. G. Spitzer, L. E. Howarth, E. E. Labate
A study has been made of the photoemission from metal films evaporated on a freshly cleaved silicon surface, the silicon-metal junction acting as a collector. Plots of the photoemission as a function of photon energy yield values for the height …
10 entries
GOLD CONTACT COATINGS: Normal spectral reflectance
The optical properties of Ni, Co, Fe, Mn, and Cd
F. Bueche
No abstract provided
19 entries
NICKEL: Angular spectral reflectance
CADMIUM: Angular spectral reflectance
COBALT: Angular spectral reflectance
Optical and infrared absorption of copper at 4.2°K
Manfred A. Biondi
No abstract provided
3 entries
The effect of aluminium purity on the reflectivity of evaporated front surface mirrors
L. Holland, B. J. Williams
No abstract provided
3 entries
A new determination of the emissivity of tungsten ribbon
J. C. DE Vos
A new determination of the spectral emissivity of tungsten has been performed in order to supply more reliable data for the use of the tungsten striplamp as a standard source of radiation. A great part of the data, used up …
7 entries
Positive and negative thermionic emission from tungsten
H. B. Wahlin, L. V. Whitney
The positive and negative thermionic emission and the rate of evaporation of neutral atoms have been studied for well outgassed tungsten. To fix a reliable temperature scale the spectral emissivity for λ=0.669μ has been determined for a cylinder heated in …
2 entries
The optical emissivity of titanium and zirconium
F. J. Bradshaw
A method of measuring the optical emissivity of titanium and zirconium using eddy current heating is described. The specimen consisted of a cylinder of metal drilled with a small black-body hole, and its real and apparent temperatures were measured with …
4 entries
TITANIUM: Normal spectral emittance
Apparatus for investigating total hemispherical emissivity
J. H. Cairns
An apparatus is described for measuring the total hemispherical emissivity of highly polished metals and alloys over the temperature range 100 to 900°C. The apparatus consists essentially of a highly polished, hollow, cylindrical sample supported within an evacuated enclosure of …
1 entries
The physical properties of titanium. I. Emissivity and resistivity of the commercial metal
Walter C. Michels, Sally Wilford
The resistivity and the total emissivity of commerical titanium have been measured over the temperature range from room temperature to 1400°K. The resistivity at 20°C is 78.6 microhm cm. Above this temperature it increases to a flat maximum of 182 …
2 entries