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Electron emission as a function of electric field, temperature, and work function has been calculated numerically on a digital computer over wide ranges of these variables. The results are then combined with the space‐charge equation to show that electron emission from the cathode of a...
The basic theory of calculation of the capacitance of a parallel‐plate capacitor by the method of subareas is advanced. This method enables accurate approximation of the long‐standing problem of the accurate evaluation of the capacitance of a rectangular parallel‐plate capacitor. A...
Mass attenuation coefficients have been measured for aluminum and copper in the energy range of 6 kev to 40 kev and for chromium, cobalt, nickel, and zinc in the energy range of 6 kev to 14 kev. The average most probable error is less than 3% and the agreement with theory is good.
Vacuum evaporated films of cadium telluride have been prepared that show photovoltages as high as 100 v∕cm of film length. An oblique angle of deposition of the vapor onto the substrate is required. The photovoltage saturates at high light intensities and low temperatures. At all other light...
A study of the electroluminescence of certain SiC p‐n junctions, between 77°K and 830°K, and over a range of 10 4 in current density, has been used to verify and to extend a 3‐part model ( P−N*−N ) of the junctions derived from electrical measurements. The electroluminescence, due to...
Magnetic domains were observed by means of the Faraday effect, and by the Bitter technique in a number of compounds having the spinel, magnetoplumbite, and perovskite‐like structures. The latter compounds are orthorhombic and have the general formula MFeO 3 where M is Y, Nd, Sm, Eu, Gd, Tb, Dy,...
Etch pits which are probably the sites of dislocations have been produced on the (111) cleavage plane of bismuth. Evidence that the pits are dislocation sites was obtained from deformation and annealing studies and from density counts on intersecting boundaries.
Intensities of primary characteristic x‐rays generated by electron bombardment of a target are logarithmically related to the difference between the electron‐accelerating voltage and the critical excitation potential for the observed radiation. An analogous relationship has now been developed...
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