Abstract:A proton precession magnetometer (PPM) is a traditional quantum magnetometer based on the Larmor precession of hydrogen protons in Earth's magnetic field. PPMs are widely used in various fields, such as magnetic observation and detection of buried objects. A coaxial solenoid is typically used to construct the PPM sensor. However, the Larmor signal slowly weakens when the axial direction of the sensor gradually approaches the direction of Earth's magnetic field. Thus, a dead zone exists when Earth's magnetic fi… Show more
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