EKHI
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Publications: 167 Total entries: 1251
Dispersion Analysis of Magnesium Stannide Reflectivity
Herbert G. Lipson, Alfred Kahan
The optical reflectivity of Mg2Sn measured between 10 and 45 μ at temperatures of 80, 296, and 473°K shows the effects of both lattice-vibration and free-carrier absorption. For the range of carrier concentrations investigated, 1017 to 1019 cm-3, the plasma …
6 entries
Temperature Dependence of the Far-Infrared Reflectivity of Magnesium Stannide
R. Geick, W. J. Hakel, C. H. Perry
The reflectivity of pure samples of magnesium stannide has been measured in the infrared region from 50 to 370 cm-1 at temperatures from 100 to 600 °K. The reflection spectra have been analyzed by means of a fit with a …
7 entries
Temperature Dependence of Carrier Concentrations and Conduction-Band Minima Separation of Gallium Antimonide
C. Y. Liang
Based upon the two-band model, a combined analysis of the experimental data of an n-type GaSb sample obtained from Faraday rotation, spectral emittance, and Hall-effect measurements is discussed. It is found that the ratio of the mobilities of the (000) …
4 entries
GaSb INTERMETALLIC COMPOUND: Normal spectral reflectance
Transmission of irtran materials from 50 μ to 300 μ
Donald E. Mccarthy
No abstract provided
3 entries
MAGNESIUM FLUORIDE MgF₂: Normal spectral transmittance
ZINC SULFIDE ZnS: Normal spectral transmittance
Infrared Dielectric Dispersion of Several Fluoride Perovskites
J. D. Axe, G. D. Pettit
Measurements at room temperature of the infrared reflectivity, low-frequency dielectric constant (ε0), and optical index of refraction (n) have been made on KCoF3, KMnF3, and RbMnF3. The reflectivity data have been analyzed using Kramers-Kronig relations to obtain the dielectric dispersion …
4 entries
RUBIDIUM MANGANESE TRIFLUORIDE RbMnF₃: Normal spectral reflectance
Total Hemispherical Emittance of Irtran 2, 4, and 6 at Low Temperatures
E. R. Schleiger, L. A. Webb
Measurements of total hemispherical emittance of selected Irtran filters are reported for the temperature range 45°K to 312°K. Values obtained for 1-mm thick specimens are 0.38, 0.23, and 0.15 for Irtran 2, 4, and 6, respectively, at 312°K and 0.49 …
15 entries
ZINC SULFIDE ZnS: Hemispherical total emittance
CADMIUM TELLURIDE CdTe: Hemispherical total emittance
Sapphire and Other New Combustion-Chamber Window Materials
George Calingaert, S. D. Heron, Ralph Stair
A STUDY has been made of materials available and suitable for the construction of transparent windows employed for observation inside the combustion-chamber. Materials that can be used include quartz, spinel, sapphire, periclase, and fluorite. The transparency of these materials in …
2 entries
CALCIUM FLUORIDE CaF₂: Normal spectral transmittance
Temperature Dependence of Infrared Dispersion in Ionic Crystals LiF and MgO
J. R. Jasperse, A. Kahan, J. N. Plendl, S. S. Mitra
Infrared-reflectivity measurements were made from 200 cm-1 to 800 cm-1 at temperatures ranging from 7.5 to 1060°K for LiF and from 8 to 1950°K for MgO. The reflection spectra were analyzed by means of a two-resonance damped-oscillator model, and the …
7 entries
The Infra-Red Absorption and Reflection Spectra of KHF2 and of KDF2 [2]
J. A.a. Ketelaar
No abstract provided
25 entries
HYDROXIDE MINERALS: Normal spectral transmittance
SILICATE MINERALS: Normal spectral transmittance
CALCIUM SULFATE: Normal spectral transmittance
SULFATE MINERALS: Normal spectral transmittance
CARBONATE MINERALS: Normal spectral transmittance
Infrared Spectral Emittance Measurements of Optical Materials
D. L. Stierwalt
Optical properties of solids are usually determined by measurements of either the transmittance or the reflectance. Each of these methods has advantages and disadvantages, depending upon the spectral region and the nature of the material being studied. A third method, …
9 entries
ZINC SELENIDE ZnSe: Normal spectral emittance