Small-vibration detector for a gravitational antenna
Braginskii V. B., Panov V. I., Popel'nyuk V. D.
There is a fundamental threshold value of the vibration amplitude of a macroscopic oscillator, at the level of ЫО~!7-3*10_!8 cm. A highly stable microwave source with a narrow spectral line has been used in a new method for measuring vibrations. A vibration-amplitude resolution of 2-10"17 cm has been achieved with an averaging time of 10 s.
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![](/ps/1508/article_23046_800_head.png "There is a fundamental threshold value of the vibration amplitude of a macroscopic oscillator, at the level of ЫО~<sup>!7</sup>-3*10<sup>_!8</sup> cm. A highly stable microwave source with a narrow spectral line has been used in a new method for measuring vibrations. A vibration-amplitude resolution of 2-10"<sup>17</sup> cm has been achieved with an averaging time of 10 s.")