磁感应强度基准技术评述

从不确定度和应用情况等方面介绍了当前磁感应强度量值单位的几类基准,包括基于计算线圈的实物基准、基于核磁共振原理的量子基准和基于质子旋磁比的基本物理常数基准。量子精密测量领域近年来发展迅速,出现了比传统核磁共振基准的准确度更高的原子磁共振量子基准、可以进一步拓展核磁共振基准的量值下限的超导-核磁共振技术等新进展。重点评述了现有的磁感应强度的量子基准,并介绍了一些有望进一步拓展磁学计量前沿的新进展。

Review of the Technologies of the Magnetic Flux Density Base Standard

To reviews the uncertainty and the application about currently used base standards about magnetic flux density (MFD), which include the artifactitious standard based on calculated coil, the quantum standard based on the principle of nuclear magnetic resonance (NMR), and the fundamental physical constant standard based on gyromagnetic ratio of proton. The field of quantum precise measurement is developing rapidly in recent years, and some new advances are bring out like the atomic magnetic resonance (AMR) quantum standard which can achieve higher accuracy than NMR standards, and the superconducting NMR technology which can expand the lower bound of NMR standards. To particularly reviews the technologies about the current quantum stands of MFD, and briefly introduces some new techniques that expected to expand the new frontiers of magnetic metrology.