Proton Overhauser Magnetometers: Theory and Experimental Study of the Ship Magnetic Influence
V. Sapunov, A. Denisov, V. Savelev, O. Denisova, S. Yaroshenko, L. Muravyev, E. Narkhov, A. Sergeev, A. Fedorov and V. Gladysh
Event name: Marine Technologies 2019
Session: УМ3. Морские технологии. Электромагнитные методы исследований
Publication date: 16 April 2019
Info: Extended abstract, PDF ( 1.09Mb )
Price: € 20
The report presents marine Overhauser magnetometers developed and produced in the Quantum Magnetometry Lab of the Ural Federal University, Russia. The general design of Overhauser magnetometers and working radical properties are considered. In particular, we discuss a radical used in our land-based and marine magnetometers distinguished by increased stability and special properties of the Heisenberg exchange allowing for signal amplification. We present several examples of actual geophysical measurements using SeaPOS-1 and SeaPOS-2 magnetometers. We consider in details an influence of the vessel magnetic moment on the measurement results. In the experiment the ship passed at different azimuths and distances to the magnetometer placed inside the nonmagnetic anchored rubber boat. Theoretical and experimental results showed that due to interaction of magnetic fields the vessel impact on the measurement can be significant.