Advanced Resonant Lorentz Force Magnetometer

Reference#: P01660

The invention consists, in one embodiment, of a resonator such as a conductive bar supported by two wires placed at nodal points of the fundamental resonance frequency. The wires also supply current of this frequency to the resonator. In the presence of a magnetic field, the Lorentz force causes the resonator to vibrate. The amplitude of this vibration is proportional to a vector component of the magnetic field. The motion of the resonator is detected using one of a number of possible methods including optical beam deflection. The invention has a sensitivity of at least 1 nT, comparable to that of a commercial fluxgate magnetometer, and a dynamic range exceeding 80 dB.

Dr. G. R. Jacobovitz
Phone: (443) 778-9899