EKHI
The open database of optical and radiative data
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Publications: 167 Total entries: 1251
New Sulfide and Selenide Glasses: Preparation, Structure, and Properties
E. R. Plumat
The properties of many sulfide and selenide glasses correspond closely to related oxide systems; this correspondence can be correlated with the ratios of the valences and of the radii of the anions and cations. The analogy of chalcogenides to oxides …
6 entries
Optical phonons of yttrium aluminum garnet
J. P. Hurrell, S. P.s. Porto, I. F. Chang, S. S. Mitra, R. P. Bauman
The dielectric properties and optical phonons of yttrium aluminum garnet (YAG) have been studied by measurements of the infrared (IR) reflection spectra and the Raman effect. A factor group analysis of the YAG space group shows that there are 18 …
1 entries
Spectral reflectivity of lunar samples
John B. Adams, Robert L. Jones
Twelve rock chips and two samples of fines all have electronic absorption bands in diffuse reflected light between 0.32 and 2.5 micrometers. Major bands occur between 0.94 and 1.00 micrometer and at 2.0 micrometers, and arise from Fe2+ in clinopyroxene …
5 entries
Thermal radiation properties and thermal conductivity of lunar material
Richard C. Birkebak, Clifford J. Cremers, James P. Dawson
The thermal radiation properties were measured for lunar fines and chips from three different lunar rocks. Measurements for the fines were made at atmospheric pressure and at a pressure of 10-5 torr or lower. The directional reflectance was obtained over …
7 entries
Luminescence and reflectance of tranquillity samples: Effects of irradiation and vitrification
Douglas B. Nash, James E. Conel, Raymond T. Greer
Luminescence measurements of Tranquillity samples indicate that energy efficiencies for excitation by protons and ultraviolet are in the range 10-6 or below and natural and induced thermoluminescence is even weaker. If these samples are typical, lunar surface luminescence cannot occur …
15 entries
Optical and high-frequency electrical properties of the lunar sample
T. Gold, M. J. Campbell, B. T. O'leary
Reflectivity and polarization laws for the powder sample and its spectrum are close to the mean for the lunar maria. Solid samples show a marked absorption feature at 1 micron. The low albedo appears to be due to a surface …
2 entries
Quantitative optical and electron-probe studies of the opaque phases
P. R. Simpson, S. H.u. Bowie
Ilmenite, chrome-titanium spinel, ulvöspinel, troilite, native iron, iron-nickel alloy, and native copper are present. In addition mackinawite is provisionally identified. Three additional opaque phases are present but not identified. Modal analysis indicates that the breccia is enriched in iron relative …
4 entries
Total reflection spectrophotometry and thermogravimetric analysis of simulated Martian surface materials
Carl Sagan, Jean P. Phaneuf, Michael Ihnat
The ultraviolet, visible, and near infrared reflection spectra of the Martian bright areas have been compared with the corresponding laboratory reflectivities, measured with an integrating sphere, of a variety of minerals containing ferric oxides and silicates, as solids and in …
15 entries
SILICATE MINERALS: Angular spectral reflectance
Far infrared study of the copper halides at low temperatures
J. N. Plendl, L. C. Mansur, A. Hadni, J. Claudel, Y. Henninger, G. Morlot, P. Strimer
The far infrared spectra of the copper halides CuCl, CuBr, and CuI have been measured in transmission and in reflection at various fixed temperatures from room temperature to liquid-helium temperature. Marked changes of such parameters as resonance frquency and damping …
24 entries
COPPER CHLORIDE CuCl: Normal spectral reflectance, Normal spectral transmittance
COPPER IODIDE CuI: Normal spectral reflectance, Normal spectral transmittance
Energy band structure of gallium antimonide
W. M. Becker, A. K. Ramdas, H. Y. Fan
Resistivity, Hall coefficient, and magnetoresistance were studied for n- and p-type GaSb. The infrared absorption edge was investigated using relatively pure p-type, degenerate n-type, and compensated samples. Infrared absorption of carriers and the effect of carriers on the reflectivity were …
3 entries