Quinn Terry, Speake Clive, Parks Harold, Davis Richard
BIPM, Pavillon de Breteuil, Sèvres Cedex 92312, France
School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
Philos Trans A Math Phys Eng Sci. 2014 Oct 13;372(2026). doi: 10.1098/rsta.2014.0032. Epub 2014 Sep 8.
This paper is a complement to the two short papers published in 2001 and 2013 in which we presented the results of the two BIPM determinations of the Newtonian constant of gravitation G. While this review contains no new results, it includes more detailed descriptions of certain key parameters that enter into the determination of G. Following a description of the overall method and the two versions of the experiment, we discuss the properties of the torsion strip, including the effects of anelasticity, then the electrostatic torque transducer, the source and test masses, dimensional metrology, angle measurement, the calculation and measurement of the moment of inertia, calculation of the torque, possible magnetic interactions and finally we discuss uncertainties and correlations in the derivation of a value for G.
本文是对2001年和2013年发表的两篇短文的补充，在那两篇短文中我们展示了国际计量局（BIPM）对牛顿引力常数G的两次测定结果。虽然本综述不包含新的结果，但它对在G的测定中涉及的某些关键参数进行了更详细的描述。在描述了整体方法和实验的两个版本之后，我们讨论了扭秤的特性，包括滞弹性效应，然后是静电扭矩传感器、源质量和测试质量、尺寸计量、角度测量、转动惯量的计算与测量、扭矩的计算、可能的磁相互作用，最后我们讨论了G值推导中的不确定度和相关性。
