Influence of temperature on period of torsion pendulum with a high-Q fused silica fiber

被引：4

作者：

Luo, Jie ^{[1
]}

Wu, Wei-Huang ^{[1
]}

Shao, Cheng-Gang ^{[2
]}

Li, Qing ^{[2
]}

Liu, Jian-Ping ^{[2
]}

Zhan, Wen-Ze ^{[1
]}

Wang, Dian-Hong ^{[1
]}

机构：

[1] China Univ Geosci, Fac Mech & Elect Informat, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2015年 / 86卷 / 09期

基金：

中国国家自然科学基金;

关键词：

CONSTANT;

D O I：

10.1063/1.4930124

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Due to the high-Q fused silica fiber's extreme sensitivity to temperature change, the period estimation of torsion pendulum with high precision depends on the effective correction of the thermoelastic effect. In the measurement of G with the time-of-swing method, we analyze the complex relation between temperature and the pendulum's period and propose a developed method to find the shear thermoelasticity coefficient as well as isolate the influence of temperature on period alone. The result shows that the shear thermoelasticity coefficient is 101(2) x 10(-6)/degrees C, the resultant correction to Delta(omega(2)) is 9.16(0.18) ppm, and the relative uncertainty to G is less than 1 ppm. (C) 2015 AIP Publishing LLC.

引用

页数：6

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