Magnetocardiography with a modular spin-exchange relaxation-free atomic magnetometer array.

Magnetocardiography with a modular spin-exchange relaxation-free atomic magnetometer array.
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DOI:
10.1088/0031-9155/57/9/2619
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发表时间:
2012-05-07
影响因子:
3.5
通讯作者:
Walker TG
Walker TG
中科院分区:
工程技术2区
文献类型:
--
作者:
Wyllie R;Kauer M;Smetana GS;Wakai RT;Walker TG

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We present a portable four-channel atomic magnetometer array operating in the spin exchange relaxation-free regime. The magnetometer array has several design features intended to maximize its suitability for biomagnetic measurement, specifically foetal magnetocardiography, such as a compact modular design and fibre coupled lasers. The modular design allows the independent positioning and orientation of each magnetometer. Using this array in a magnetically shielded room, we acquire adult magnetocadiograms. These measurements were taken with a 6–11 fT Hz−1/2 single-channel baseline sensitivity that is consistent with the independently measured noise level of the magnetically shielded room.
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