Maintenance of Magnetic Flux Density Standards on the Basis of Proton Gyromagnetic Ratio at KRISS

摘要

The proton gyromagnetic ratio (γ_(p)~(′)) plays a fundamental role in achieving high accuracy in magnetic measurements. We have improved our magnetic flux density standards using the γ_(p)~(′)-value and related techniques developed at Korea Research Institute of Standards and Science (KRISS). The standards are used for the calibration of magnetometers and support the test of sensors and materials in the range from 20 μT to 2.5 T with (4 to 80) μT/T uncertainties (k=2).