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Improved method for preparing rare earth sesquichalcogenides

Description: An improved method for the preparation of high purity rare earth sesquichalcogenides is described. The rare earth, as one or more pieces of the metal, is sealed under a vacuum with a stoichiometric amount of sulfur or selenium and a small amount of iodine into a quartz reaction vessel. The sealed vessel is then heated to above the vaporization temperature of the chalcogen and below the melting temperature of the rare earth metal and maintained until the product has been formed. The iodine is th… more
Date: April 14, 1982
Creator: Takeshita, Takuo; Beaudry, Bernard J. & Gschneidner, Karl A., Jr.
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Low-pressure ion source

Description: A low pressure ion source for a neutron source comprises a filament cathode and an anode ring. Approximately 150V is applied between the cathode and the anode. Other electrodes, including a heat shield, a reflector and an aperture plate with a focus electrode, are placed at intermediate potentials. Electrons from the filament drawn out by the plasma and eventually removed by the anode are contained in a magnetic field created by a magnet ring. Ions are formed by electron impact with deuterium o… more
Date: October 27, 1982
Creator: Bacon, F.M.; Brainard, J.P.; O'Hagan, J.B. & Walko, R.J.
open access

Semiconductor liquid-junction solar cell

Description: A semiconductor liquid junction photocell in which the photocell is in the configuration of a light concentrator and in which the electrolytic solution both conducts current and facilitates the concentration of incident solar radiation onto the semiconductor. The photocell may be in the configuration of a non-imaging concentrator such as a compound parabolic concentrator, or an imaging concentrator such as a lens.
Date: October 29, 1982
Creator: Parkinson, B.A.
open access

Sonic resonator control and method for determining component concentration in multiple-component liquid

Description: This invention teaches a control to be used in smelting aluminum by the electrolysis breakdown of alumina (Al/sub 2/O/sub 3/) in a molten electrolyte heated to approximately 950 to 1000/sup 0/C. The invention provides a sonic resonator and control that can accurately detect the resonant frequency of the resonator in the molten electrolyte. The resonator preferably is made with tubular side wall 1/4 of the sonic wavelength, or is a quarter wave resonator. A wave generator inputs a signal having … more
Date: October 29, 1982
Creator: Shen, S.Y.
open access

System for Analyzing Coal-Liquefaction Products

Description: A system for analyzing constituents of coal-derived materials comprises three adsorption columns and a flow-control arrangement which permits separation of both aromatic and polar hydrocarbons by use of two eluent streams. 4 figures.
Date: October 29, 1982
Creator: Dinsmore, Stanley R. & Mrochek, John E.
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