Popis: |
Measuring elastic moduli using resonant ultrasound spectroscopy (RUS) can be very challenging at the best of times. When the measurement environment needs to be controlled from milliKelvin to many hundreds of Kelvin, this challenge becomes extremely acute. We will present methods and results from such experiments showing that with care, elastic moduli can be very accurately determined over these extreme temperature ranges. [Work supported by the National Nuclear Security Administration, U.S. Dept. of Energy, State of Florida, and the National Science Foundation.] |