The Calculation of Electrostatic Electron-gun Performance†
An automatic electron trajectory tracer has been used to analyse four different high current density electron guns operated electrostatically.
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Rupture Characteristics of Safety Diaphragms
Abstract Instability (maximum pressure) criteria for materials obeying a parabolic stress-strain law are investigated. Two special solutions are formulated, accompanied by the instability condition obtained from the author’s approximate theory. Bursting pressure is most accurately predicted by the approximate theory.…
Exchange of Deuterium and Heavy Oxygen among Hydrogen, Water Vapor and Oxide Catalysts of Spinel Type
ADVERTISEMENT RETURN TO ISSUEArticleNEXTExchange of Deuterium and Heavy Oxygen among Hydrogen, Water Vapor and Oxide Catalysts of Spinel TypeYukio Yoneda, Akio Fujimoto, and Shoji MakishimaCite this: J. Phys. Chem. 1959, 63, 12, 1987–1990Publication Date (Print):December 1, 1959Publication History Published online1 Ma…
PRECIPITATION PHENOMENA IN COBALT-TANTALUM ALLOYS
The precipitation phenomena occurring in cobalttantalum alloys were investigated in the temperature range from 500 to 1050 deg C by correlating the results of metallographic, X-ray, micro- and macrohardness, and electrical resistivity studies. The property changes were found to depend on general precipitation and lame…
The Relation between the Deformation of Substrate of PV A Sheet by Stretching and the Stretch Ratio Rs
Yoshié Tanizaki, Teruaki Kobayashi, Noboru Ando; The Relation between the Deformation of Substrate of PV A Sheet by Stretching and the Stretch Ratio Rs, Bu
The Melt Refining of Irradiated Uranium: Application to EBR-II Fast Reactor Fuel. I. Introduction
A process for recycling plutonium and uranium alloy fuels is described; it involves melting and liquating the alloys in ceramic crucibles and casting the partially purified metals. Its particular merit is the rapid turnover of a fuel suitable for a fast reactor. A pilot plant, now under construction, will operate in a…
Nitroparaffins as Potential Engine Fuel
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNitroparaffins as Potential Engine FuelE. S. StarkmanCite this: Ind. Eng. Chem. 1959, 51, 12, 1477–1480Publication Date (Print):December 1, 1959Publication History Published online1 May 2002Published inissue 1 December 1959https://pubs.acs.org/doi/10.1021/ie50600a035https://…
Sauter Theory of the Photoelectric Effect
Results of Sauter are expressed in the form of a transition matrix which determines the photoelectric effect cross section for arbitrary x-ray polarization and arbitrary initial and final orientations of the electron spin. The structure of the matrix elements accounts for curious properties of the cross section in ter…
40—A DIRECT METHOD FOR MEASURING YARN DIAMETERS AND BULK DENSITIES UNDER CONDITIONS OF THREAD FLATTENING
With normal types of woven fabric, the assumption of a circular thread cross-section is frequently invalid owing to the considerable thread flattening which usually occurs during weaving. As a basis for studies of fabric structure, therefore, a method has been devised whereby measures of both major and minor thread di…
Bremsstrahlung and the Photoelectric Effect as Inverse Processes
The bremsstrahlung matrix element at the short-wavelength limit of the spectrum is calculated to lowest order in $\ensuremath{\alpha}\ensuremath{\equiv}\frac{Z}{137}$, for an unscreened Coulomb field. The result, valid for relativistic incoming electrons, is shown to be exactly ${\ensuremath{\alpha}}^{\ensuremath{-}1}…
Yoderite, a new hydrous magnesium iron aluminosilicate from Mautia Hill, Tanganyika
Summary Yoderite occurs as a major constituent in a quartz-kyanite-tale schist, and is a high-pressure phase formed by the reaction Ky + Tc → Yd + Qu. The monoclinic unit-cell, a 8·10 Å., b 5·78 Å., c 7·28 Å., β 106°, space-group P 2 1 or P 2 1 m , contains approximately (Mg 2·0 Ca 0·2 Fe 0·5 Al 5·3 Si 4·0 O 17·6 (OH)…
Organic Carbonates. IV.1a,b,c Factors Affecting Formation of Homologous Cyclic Carbonates
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganic Carbonates. IV.1a,b,c Factors Affecting Formation of Homologous Cyclic CarbonatesSHALOM SAREL, LEO A. POHORYLES, and RAPHAEL BEN-SHOSHANCite this: J. Org. Chem. 1959, 24, 12, 1873–1878Publication Date (Print):December 1, 1959Publication History Published online1 May…
The growth of precipitates
During the growth of coherent precipitates stresses are generated because the lattice dimensions of the precipitate differ from those of the matrix. Whon the strain energy is large enough it will be relieved by the precipitate losing continuity with the matrix, i.e. becoming non-coherent. It is suggested that this wil…
A Study of the Zirconium-Hydrogen and Zirconium-Hydrogen–Uranium Systems between 600 and 800°
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Study of the Zirconium-Hydrogen and Zirconium-Hydrogen–Uranium Systems between 600 and 800°Lee D. LaGrange, L. J. Dykstra, John M. Dixon, and Ulrich MertenCite this: J. Phys. Chem. 1959, 63, 12, 2035–2041Publication Date (Print):December 1, 1959Publication History Publishe…
High Temperature Metal Deterioration In Atmospheres Containing Carbon-Monoxide and Hydrogen
Carbon steel and stainless steel equipment exposed to gas mixtures rich in hydrogen and carbon-monoxide at temperatures from 800 to 1200 F have been attacked with resulting loss of metal. Conditions under which this attack has been observed in a coal-to-oil synthesis plant and the nature of metal deterioration are des…
The Experimental Clarification of the Laws of beta-Radioactivity
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that the aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as the target material. The Organisation for Economic Co-...Read More
The effect of hydrogen bonding addends on the dilute solution viscosity of poly(acrylamide) and unionized poly(acrylic acid) and poly(methacrylic acid)
Abstract The effect of various addends on the specific viscosity of dilute aqueous unionized poly(methacrylic acid) (PMA) solutions, unionized poly(acrylic acid) (PAA) solutions, and poly(acrylic acmide) (PAAm) solutions was investigated. The addition of sodium and lithium chloride decreases the specific viscosity of…
Stereoregulated polymerization in the free propagating species. III. Effect of temperature on the polymerization of vinyl chloride
Abstract Theoretical treatment had shown that syndiotactic propagation should be slightly favored energetically over isotactic propagation in free radical vinyl chloride polymerization. This prediction has been confirmed experimentally by x‐ray and infrared investigations of vinyl chloride polymers prepared at various…
Electron Impact Studies of Aromatic Hydrocarbons. I. Benzene, Naphthalene, Anthracene, and Phenanthrene
A systematic survey of ionization-dissociation processes of fused-ring aromatic compounds is initiated. Mass spectra and appearance potentials of the singly and doubly charged molecule ions are reported. The observed ionization potentials of benzene (9.38 ev), naphthalene (8.26 ev), anthracene (7.55 ev), and phenanthr…
Dislocation loops in neutron-irradiated copper
Electron transmission microscope observations have been carried out on copper irradiated with neutrons at temperatures of 35°c and 60°-100°c, and subsequently thinned by electropolishing. Specimens irradiated to a dose of 6.7 × 1017 cm−2 (at 35°c) contain ∼3 × 1016 defects c.c.−1 in the form of small regions of strain…