Dictionary:Overhauser-effect magnetometer

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{{#category_index:O|Overhauser-effect magnetometer}} (ō’ vər how, zər) Instead of using an impressed polarizing field to align proton nuclei with the external magnetic field, as in the conventional proton magnetometer, the proton nuclear spins are polarized by interaction with free electrons. Resonance of paramagnetic free electrons results from excitation by a VHF field.