Properties of Low-Expansion Materials for Hydrogen Maser Cavities
Properties of Low-Expansion Materials for Hydrogen Maser Cavities
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氢脉泽腔低膨胀材料的特性
DOI：
10.1109/freq.1985.200821
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
S. Jacobs
中科院分区：
文献类型：
--
作者：
E. Mattison;R. Vessot;S. Jacobs
我们已经测量了四种低膨胀材料的热学和机械性能，这些材料是用于氢激射器谐振腔的候选材料：cer - vit_c - 01和C-126， ULE'和Zerodur@.在室温和加热样品至300℃和700℃后测量热膨胀率。以10-8 OC-1为单位，膨胀系数近似为（1/L） （dL/dT）： Cer-Vit C126, -40；Cer-Vit C101, -13；零点，-12至-6；ULE +5。加热至700℃后，Zerodur的膨胀率下降了50%，而ULE和Cl01的膨胀率基本保持不变。
We have measured thermal and mechanical properties of four low-expansion materials that are candidates for use in hydrogen maser resonant cavities: Cer-Vit@ C-l01 and C-126, ULE', and Zerodur@. Thermal expansivities were measured at room temperature and after heating the samples to 3OO0C and to 700°C. The approximate expansivities, (1/L) (dL/dT) , in units of 10-8 OC-1, are: Cer-Vit C126, -40; Cer-Vit C101, -13; Zerodur, -12 to -6; and ULE, +5. Zerodur's expansivity decreased in magnitude by 50% after heating to 7OO0C, while the expansivities of ULE and Cl01 remained substantially unchanged.