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VOLUME 55 (1992) | ISSUE 8 | PAGE 424
Oscillators for free-mass gravitational antennas
The potential sensitivity of gravitational antennas using free masses could be improved significantly by fabricating their sensors, which are low-frequency mechanical oscillators, completely from fused quartz. An oscillation damping time of 1.2 Χ107 s has been achieved for such oscillators. In this case the sensitivity in ordinary coordinate measurements may be limited by the standard quantum limit, rather than by thermal noise.