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An x‐ray diffraction method has been developed which establishes a direct correlation between the spot reflections on the Debye‐Scherrer lines and the lattice regions on the specimen surface giving rise to these reflections. After this correlation has been accomplished an analysis of the spot...
By assuming the bunching process of electrons in the drift region of a klystron as being space periodic, rather than time periodic, it is possible to describe the debunching mechanism in a finite diameter beam on a large signal basis. It is shown that such beams have a discrete spectrum of...
The backscattering cross section of colinear arrays of thin dipoles at normal incidence has been derived using the variational method. It was found advantageous to use the variational principle in its scale‐dependent form, since the extremum of the variational functional does not depend on the...
An apparatus for studying heat contact at low temperatures is described. Measurements of heat transfer between various surfaces in vacuo have been made. The thermal conductance is independent of the area of the surfaces and is nearly proportional to the force between them, up to forces of about...
For the fiber‐texture type of preferred orientation, a method is developed for determining the ``fiber axis density'' from the ``pole density'' given by x‐ray diffraction data. The fiber axis distribution so deduced gives directly and quantitatively the type and degree of preferred...
A variational method is presented which is used to calculate the energy appearing in the various diffracted orders set up when a plane wave is incident upon a periodic reflecting surface. Either the first or the second boundary condition can be so treated. A sample problem is worked showing that...
Pulse electronic techniques extend the advantages of field emission microscopy to desirable experimental conditions not attained with steady‐state fields. A visually continuous ``motion picture'' emission pattern enhances the study of transient cathode mechanisms while holding negligible the...
A summary is given of the theory of measurement of complex relative permeability and permittivity of low conductivity materials by the thin‐sample method using a slotted transmission line. The equations from which to calculate the electrical properties from the measured parameters are extended...
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