Abstract
A recently introduced tuning-dressed scheme makes a Bell and Bloom magnetometer suited to detect weak variations of a radio-frequency (RF) magnetic field. We envisage the application of such innovative detection scheme as an alternative (or rather as a complement) to RF atomic magnetometers in electromagnetic-induction-imaging apparatuses.
Highlights
IntroductionIn 2001, Griffiths [1] proposed an imaging technique based on inferring one or more of the three passive electromagnetic properties (conductivity σ, permittivity ε and permeability μ) to produce images on the basis of the response to a position dependent oscillating magnetic field
In 2001, Griffiths [1] proposed an imaging technique based on inferring one or more of the three passive electromagnetic properties to produce images on the basis of the response to a position dependent oscillating magnetic field
We envisage the application of such innovative detection scheme as an alternative to RF atomic magnetometers in electromagnetic-induction-imaging apparatuses
Summary
In 2001, Griffiths [1] proposed an imaging technique based on inferring one or more of the three passive electromagnetic properties (conductivity σ, permittivity ε and permeability μ) to produce images on the basis of the response to a position dependent oscillating magnetic field. The secondary magnetic field generated by those currents is detected and analyzed. Beside inductive detectors based on the Faraday’s induction law (pick-up coils, possibly arranged in arrays), more advanced devices based on magnetometric sensors have been proposed to extend the bandwidth and/or to improve the sensitivity, at expense of larger cost and complexity. Among the latter, all-optical [8] and radio-frequency [9] atomic magnetometers (including cold-atom magnetometers [10,11]), as well as nitrogen vacancy magnetometers [12] have been successfully applied. The potential of eddy current detectors based on superconducting quantum interference [13,14] and on giant magnetoresistance [15,16,17] has been demonstrated
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