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Proceedings Paper

Assessment of tunneling magnetoresistors for magnetic imaging tomography
Author(s): Abigail Langley; Rob Ward; Max Joseph; Joseph Watson
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Paper Abstract

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.

Paper Details

Date Published: 6 October 2017
PDF: 9 pages
Proc. SPIE 10438, Emerging Imaging and Sensing Technologies for Security and Defence II, 104380E (6 October 2017); doi: 10.1117/12.2278882
Show Author Affiliations
Abigail Langley, AWE plc (United Kingdom)
Rob Ward, AWE plc (United Kingdom)
Max Joseph, AWE plc (United Kingdom)
Joseph Watson, AWE plc (United Kingdom)


Published in SPIE Proceedings Vol. 10438:
Emerging Imaging and Sensing Technologies for Security and Defence II
Keith L. Lewis; Richard C. Hollins; Gerald S. Buller; Robert A. Lamb, Editor(s)

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