Abstract
The ultrasonic attenuation (acoustic losses) in α-quartz as a result of relaxation processes at E' series defect centres is calculated. For this purpose use is made of the theoretical temperature dependences of the E' relaxation time, reported elsewhere, based on the pseudo-Jahn-Teller effect and the reaction rate method. A comparison is made of the temperature curve of the acoustic losses at 5 MHz with a literature experimental loss curve of an AT-cut quartz resonator measured following irradiation with neutrons.
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