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Ultrasensitive Atomic Magnetometers

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Author(s)
Wyllie, Robert; Wakai, Ronald T.; Walker, Thad G.
Date
Sep 10, 2009
Subject(s)
Biomagnetometry
Abstract
We have developed a novel, small-volume portable single-channel atomic biomagnetometer and have used it to detect adult MCG signals. The cryogenic-free magnetometer has sufficiently high sensitivity (20 fT/rt(Hz)) that it is fetal MCG capable. It detects two magnetic field components simultaneously and has a bandwidth of typically 50-100 Hz. Extensions to multiple channels will be described.
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http://digital.library.wisc.edu/1793/36468 
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