Sample holder allowing precise orientation, azimuthal rotation, and high temperature flashes in ultrahigh vacuum

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Abstract
A sample holder that converts a linear coaxial motion to a precise azimuthal rotation, while still allowing precise orientation of the sample normal and very high temperature flashes (>2500 K) is described. This is accomplished using large (1 (1)/(2) in.) diameter gears and ball bearings. One gear is bored out to provide space both for a sample mounting platform capable of precise orientation of the sample normal, and for a sample heating assembly. The sample cools to close to room temperature in ten minutes, after which the original sample orientation is regained, to within 0.2°.