Screening method and apparatus
作者： Stephen Wolff , Sankaran Kumar , Lowell J. Burnett , Peter V. Czipott
DOI:
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摘要: A method and apparatus to screen individuals specifically for paramagnetic or ferromagnetic objects they may be carrying wearing, before enter a controlled area. The device comprises screening portal, including at least one magnetic gradiometer its electronics. places all of the sensor arrays in close proximity subject's body, purposes. portal has excitation coil oriented cause field have zero mutual inductance with gradiometers.
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