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It is shown experimentally that the flux at a point in a neutron beam from a collimator of a given angular divergence is very dependent on the length of the collimator. A simple geometrical theory fits the experimental results fairly well.
The method proposed in part I for the interpretation of small angle scattering data is applied to various concentrated systems. For a dilute system, small angle scattering provides the ϕ(l) distribution of chords directly in the scattering units. Two examples of dilute particle suspensions are...
A 45Degrees conical back reflexion camera has been found to be very suitable for single-crystal orientation. A chart for the interpretation of the back reflexion films is described.
The two principal components of the mean-square atomic displacement resulting from thermal vibrations in holmium, and , are determined from single-crystal, X-ray diffraction intensities, corrected for thermal diffuse scattering and for extinction effects. The room temperature values of and are...
A portable apparatus for cooling specimens used in X‐ray and neutron diffraction studies is described. Temperatures in the + 50 to −1 185 °C range can be automatically and continuously maintained within 1 ° of the desired temperature for several weeks. Cold gas is obtained from liquid nitrogen...
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