摘要
通过分析采用抽运-检测型铷原子磁力仪和激光抽运的Mz铷光泵磁力仪测量稳定磁场和变化磁场得到的实验结果表明,用功率谱密度方法标定原子磁力仪的灵敏度更科学,进行原子磁力仪设计时最优灵敏度指标不应显著优于稳定磁场的本底磁场噪声水平。对原子磁力仪量程、灵敏度、磁场采样率、交变磁场响应带宽技术指标进行了讨论,对弱磁领域磁场计量工作提出一些建议。
By analyzing the experimental results of measuring the stable or changing magnetic field using the pumpprobe rubidium atomic magnetometer and the laser-pumped Mz rubidium atomic magnetometer,we show that it is more scientific to calibrate the sensitivity of atomic magnetometer by power spectral density method,and point out that the optimal sensitivity of the designed atomic magnetometers should not be significantly better than the background magnetic noise of the stable magnetic field.This paper discusses the atomic magnetometer’s range,sensitivity,magnetic field sampling rate,response bandwidth of alternating magnetic field,andproposes some suggestions for weak magnetic field metrology.
作者
缪培贤
杨世宇
崔敬忠
刘志栋
MIAO Peixian;YANG Shiyu;CUI Jingzhong;LIU Zhidong(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China)
出处
《真空与低温》
2020年第6期494-502,共9页
Vacuum and Cryogenics
基金
真空技术与物理重点实验室基金(HTKJ2019KL510001)。
关键词
原子磁力仪
灵敏度
磁场采样率
带宽
atomic magnetometer
sensitivity
magnetic field sampling rate
bandwidth
