Coupled modes of the torsion pendulum
Coupled modes of the torsion pendulum
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DOI：
10.1016/j.physleta.2007.08.020
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发表时间：
2008-01
影响因子：
2.6
通讯作者：
Xiang Fan;Qi Liu;Lin-Xia Liu;V. Milyukov;Jun Luo
中科院分区：
文献类型：
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作者：
Xiang Fan;Qi Liu;Lin-Xia Liu;V. Milyukov;Jun Luo
本文用解析方法解决了扭摆的摆振模态与扭转模态的耦合问题。我们的解决方案提供了一个清晰的解释，为什么磁阻尼器是有效的抑制不必要的模式在大多数引力实验。解析解还表明，模式耦合的振幅在最低频率处最大。这解释了为什么在这里报告的实验中观察到的全部是最低频率的模式耦合。
The coupling of the swing modes of a torsion pendulum to the torsional mode has been solved analytically. Our solution provides a clear explanation of why a magnetic damper is effective in suppressing unwanted modes in most gravitational experiments. The analytic solution also shows that the amplitude of the mode coupling is greatest at the lowest frequencies. This explains why mode coupling at the lowest frequency is all that is observed in the experiments reported here.