Elastic constants of thorium single crystals

Date
1957-06-01
Authors
Armstrong, Philip
Carlson, O.
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Ames Laboratory
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Ames Laboratory
Abstract

Values for the elastic constants c11 , c12 and c44 of thorium were determined over the temperature range from 80 to 370 degrees K. by ultrasonic measurements on single crystals. Two crystals were prepared by the strain anneal method. One crystal was cut in the form of a circular plate about 0.7 inch in diameter and 0.06 inch thick. The [111] direction of the crystal was perpendicular to the sample face. Measurements on this crystal with a resonance technique produced values for the stiffness coefficient in the [111] direction. This stiffness coefficient is a function of all three elastic constants.

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