6 October 2017 Assessment of tunneling magnetoresistors for magnetic imaging tomography
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Imaging of potential threat objects within shielded containers can be difficult, such as x-ray through dense metals e.g. Pb. Magnetic imaging tomography (MIT) offers a method by which imaging is performed on the basis of electrical conductivity and magnetic permeability rather than density. MIT has been used widely in the non-destructive evaluation (NDE) field to detect flaws and defects in solid objects, usually using inductance coils to generate and detect the magnetic field. Here, we use a tunneling magnetic resistor (TMR) to detect a field generated by a drive coil and use this data to image objects of interest within shielded enclosures.
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Abigail Langley, Abigail Langley, Rob Ward, Rob Ward, Max Joseph, Max Joseph, Joseph Watson, Joseph Watson, } "Assessment of tunneling magnetoresistors for magnetic imaging tomography", Proc. SPIE 10438, Emerging Imaging and Sensing Technologies for Security and Defence II, 104380E (6 October 2017); doi: 10.1117/12.2278882; https://doi.org/10.1117/12.2278882

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