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A method is described wherein metallic foils of those elements not available in rolled foil form may be prepared for use as absorbing foils in Ross balanced filters for x‐ray analysis. Powdered antimony was evaporated in vacuum from a heated crucible to form a deposit 0.0015 cm thick on...
The details of construction of an improved induction accelerator which gives electrons 20‐million electron‐volts energy are described. The accelerator has a 19‐inch diameter pole face and weighs approximately 3.5 tons. The x‐ray output as measured in a thick wall ionization chamber is 16...
A description is given of: (a) the construction and operation of a complete throttle expansion hydrogen liquefaction cycle employing the Kapitza circuit for operation with ordinary commercial gas without fouling of the heat exchangers by low freezing impurities; (b) a simple scheme for employing...
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