Ultrasonic Measurements in Binary Solutions of Na-K and Na-Rb

Author

Joseph Ernest Amaral, University of Rhode Island

Date of Award

1972

Degree Type

Thesis

Degree Name

Master of Science in Physics

Department

Physics

First Advisor

Stephen V. Letcher

Abstract

The pulse-echo technique has been used to measure ultrasonic absorption and velocity in Na-K and Na-Rb alloys. Data were taken at temperatures from -5° C to 250° C using frequencies from 15 MHz to 105 MHz. It has been found that both Na-K and Na-Rb have absorption peaks near 67 atomic percent Na. The magnitude of the absorption was found to be much greater in the Na-Rb solutions. The results in Na-Kare consistent with previously reported measurements that were attributed to the equilibrium process 2Na + K⇌Na₂K. However, it is further speculated that the high attenuation in Na-Rb Is due to a critical phase separation.

Recommended Citation

Amaral, Joseph Ernest, "Ultrasonic Measurements in Binary Solutions of Na-K and Na-Rb" (1972). Open Access Master's Theses. Paper 1145.
https://digitalcommons.uri.edu/theses/1145