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Using a magnetometer to image a two-dimensional current distribution

J. Appl. Phys. 65, 361 (1989); doi:10.1063/1.342549

Issue Date: 1 January 1989

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Bradley J. Roth, Nestor G. Sepulveda, and John P. Wikswo, Jr.
Living State Physics Group and Vanderbilt Electromagnetics Laboratory, Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235
We describe a mathematical algorithm to obtain an image of a two-dimensional current distribution from measurements of its magnetic field. The spatial resolution of this image is determined by the signal-to-noise ratio of the magnetometer data and the distance between the magnetometer and the plane of the current distribution. In many cases, the quality of the image can be improved more by decreasing the current-to-magnetometer distance than by decreasing the noise in the magnetometer. Journal of Applied Physics is copyrighted by The American Institute of Physics.
History: Received 16 June 1988; accepted 13 September 1988
Permalink: http://link.aip.org/link/?JAPIAU/65/361/1
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KEYWORDS and PACS

Keywords
PACS
  • 07.55.+x
    Specific instrumentation and techniques of general use in physics Magnetic instruments and techniques
  • 41.10.Dq
    Electricity and magnetism: fields and charged particles Classical electromagnetism Electrostatics, magnetostatics
  • 87.40.+w
    Biophysics, medical physics, and biomedical engineering Biomagnetism (e.g., cardiomagnetism, neuromagnetism, tissue susceptibility) and magnetobiology (e.g., magnetic field effects on cellular processes, and on navigation and behavior of various species)
  • 02.60.-x
    Mathematical methods in physics Numerical approximation and analysis
  • YEAR: 1988-89

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
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REFERENCES (16)
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