Laser-pumped cesium magnetometers for high-resolution medical and fundamental research
Laser-pumped cesium magnetometers for high-resolution medical and fundamental research
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DOI：
10.1016/j.sna.2005.09.036
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发表时间：
2006-05-24
影响因子：
4.6
通讯作者：
Weis, A.
中科院分区：
文献类型：
--
作者：
Groeger, S.;Bison, G.;Weis, A.
激光泵浦铯磁力计可以在室温下进行高度灵敏的磁力测量。我们报告了该技术在生物磁诊断和中子电偶极矩 (nEDM) 实验中的应用。在生物磁应用中，使用梯度计检测跳动的人类心脏的磁场，其固有灵敏度达到 80 fT/Hz(1/2)。该设备可以记录人体表面上方的时间分辨磁场图，空间分辨率为4厘米，其性能可与基于SQUID技术的商业设备相媲美。在 nEDM 实验中，激光泵浦铯磁力计用于测量直流磁场并将其稳定在 10(-7) 水平。这些器件的固有灵敏度约为 14 fT/Hz(1/2)，测量带宽为 1 kHz。给出了一般操作原理和具体结果。 (c) 2005 Elsevier B.V. 保留所有权利。
Laser-pumped cesium magnetometers allow highly sensitive magnetometry at room temperature. We report on applications of that technique in biomagnetic diagnostics and in a neutron electric dipole moment (nEDM) experiment. In the biomagnetic application the magnetic field from the beating human heart is detected using a gradiometer, which reaches an intrinsic sensitivity of 80 fT/Hz(1/2). The device can record time-resolved magnetic field maps above the human body surface with a spatial resolution of 4 cm and its performance is comparable to commercial devices based on the SQUID technique. In the nEDM experiment laser-pumped cesium magnetometers are used to measure and stabilize a dc magnetic field at a level of 10(-7). Those devices reach an intrinsic sensitivity of about 14 fT/Hz(1/2) with a measurement bandwidth of 1 kHz. The general principle of operation and specific results are presented. (c) 2005 Elsevier B.V. All rights reserved.