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Updated: Feb 8, 2026

Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
Published on: June 28, 2017
Frequency-Temperature Compensated Cuts of Crystalline-Quartz Acoustic Cavity Within the Cryogenic Range [4 K, 15 K]
Abstract:
New temperature coefficients of quartz elastic coefficients particularly relevant at liquid-helium temperature have been reported recently. Based on this result, frequency-temperature compensated cuts are predicted by calculation and then demonstrated by experiment. Such compensated cuts can definitely fix the issue of remaining temperature sensitivity of crystalline-quartz acoustic cavities unbeatable for their extremely low mechanical loss, as low as $10^{-9}$ , when operated at liquid-He temperature.
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