What interest to use caesium magnetometer instead of fluxgate gradiometer?

Abstract

Magnetic prospecting is increasingly used to map archaeological remains. Indeed, this method has its interest compared to other approaches, such as electrical resistivity method. Independent of the soil water content, it combines speed with high spatial resolution. Moreover, the sensors developed over the last fifteen years are sensitive to minimal changes in the magnetic signal. They rely on instrumental principles that can be very different. Caesium magnetometers and fluxgate gradiometers a...