2023/12/04 by Ni Zhao, Lulu Zhang, Zhao, Ni +9
Engineering · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Magnetic Field Sensors Techniques
paper · pdf · doi:10.48550/arxiv.2312.01572
openalex publication_date 2023/12/04 · openalex created_date 2023/12/06 · openalex updated_date 2026/07/28
In a magnetic field detection system,to achieve high-sensitivity magnetic field measurement, it is necessary to use uniform magnetic field coils to provide a stable working environment, so the measurement of the magnetic field coilsconstant is of great significance. To accurately measure the magnetic field and compare the coil constant, we employed two different methods under good magnetic shielding conditions: the optically-pumped rubidium free-induction decay magnetometry and the fluxgate magnetometry. In terms of measuring coil constant, the optically-pumped rubidium FID magnetometer performs better than fluxgate magnetometer due to its high-sensitivity and good signal-to-noise ratio. We compare the magnetic field measured by the FID magnetometer with that of the fluxgate magnetometer and obtain a calibration factor of 0.9967. The calibration of fluxgate magnetometer with optically-pumped atomic magnetometer is realized. The method is simple and easy to operate for calibrating fluxgate magnetometer.