TY - JOUR
T1 - On-Site Synchronous Determination of Coil Constant and Nonorthogonal Angle Based on Electron Paramagnetic Resonance
AU - Zhang, Hong
AU - Zou, Sheng
AU - Quan, Wei
AU - Chen, Xiyuan
AU - Fang, Jiancheng
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2020/6/1
Y1 - 2020/6/1
N2 - An on-site and fast synchronous measurement of coil constant and nonorthogonal angle, using an all-optical atomic magnetometer, was reported in this article. Based on the spectrum analysis of electron paramagnetic resonance of spin-polarized potassium under different magnetic fields, the measurement models of coil constant and nonorthogonal angle were established, according to which we experimentally obtained the weighted average results with related estimated uncertainties: the coil constants in the x-, y-, and z-axes were (145.9 ± 0.3) nT/mA, (149.5 ± 0.3) nT/mA, and (129.6 ± 0.1) nT/mA, respectively; the nonorthogonal angles existing in the x z and y z axes were (0.11 ± 0.02)° and (0.23 ± 0.02)°, respectively. The determination results of the residual magnetic field in the z-axis, with two comparative experiments, demonstrated the validity of this on-site synchronous measurement method. The present method can be easily used in calibrating coil constant and nonorthogonal angle for all-optical atomic magnetometers, especially for miniaturized ones.
AB - An on-site and fast synchronous measurement of coil constant and nonorthogonal angle, using an all-optical atomic magnetometer, was reported in this article. Based on the spectrum analysis of electron paramagnetic resonance of spin-polarized potassium under different magnetic fields, the measurement models of coil constant and nonorthogonal angle were established, according to which we experimentally obtained the weighted average results with related estimated uncertainties: the coil constants in the x-, y-, and z-axes were (145.9 ± 0.3) nT/mA, (149.5 ± 0.3) nT/mA, and (129.6 ± 0.1) nT/mA, respectively; the nonorthogonal angles existing in the x z and y z axes were (0.11 ± 0.02)° and (0.23 ± 0.02)°, respectively. The determination results of the residual magnetic field in the z-axis, with two comparative experiments, demonstrated the validity of this on-site synchronous measurement method. The present method can be easily used in calibrating coil constant and nonorthogonal angle for all-optical atomic magnetometers, especially for miniaturized ones.
KW - All-optical atomic magnetometer
KW - coil constant
KW - electron paramagnetic resonance (EPR)
KW - nonorthogonal angle
KW - synchronous measurement
UR - https://www.scopus.com/pages/publications/85084919175
U2 - 10.1109/TIM.2019.2929283
DO - 10.1109/TIM.2019.2929283
M3 - 文章
AN - SCOPUS:85084919175
SN - 0018-9456
VL - 69
SP - 3191
EP - 3197
JO - IEEE Transactions on Instrumentation and Measurement
JF - IEEE Transactions on Instrumentation and Measurement
IS - 6
M1 - 8772120
ER -